Bibliografías temáticas / 1,1,3,3-tetraorganodisiloxanes / Artículos de revistas

Artículos de revistas sobre el tema "1,1,3,3-tetraorganodisiloxanes"

Siga este enlace para ver otros tipos de publicaciones sobre el tema: 1,1,3,3-tetraorganodisiloxanes.
Autor: Grafiati
Publicado: 6 de septiembre de 2023

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte los 50 mejores artículos de revistas para su investigación sobre el tema "1,1,3,3-tetraorganodisiloxanes".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Explore artículos de revistas sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.

1

Shankar, Ravi, Asmita Sharma, Bhawana Jangir, Manchal Chaudhary y Gabriele Kociok-Köhn. "Catalytic oxidation of diorganosilanes to 1,1,3,3-tetraorganodisiloxanes with gold nanoparticle assembly at the water–chloroform interface". New Journal of Chemistry 43, n.º 2 (2019): 813–19. http://dx.doi.org/10.1039/c8nj04223c.

Texto completo
Resumen
The synthesis of 1,1,3,3-tetraorganodisiloxanes from the hydrolytic oxidation of diorganosilanes, RR1SiH2, using AuNPs as an interfacial catalyst is described. This study provides a manifestation of the photothermal effect in enhancing the catalytic activity at ambient temperature.
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Frampton, C. S. y K. E. B. Parkes. "1,1,3,3-Tetramethylurea". Acta Crystallographica Section C Crystal Structure Communications 52, n.º 12 (15 de diciembre de 1996): 3246–48. http://dx.doi.org/10.1107/s0108270196011146.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Deng, Jia. "1,1,3,3-Tetramethyldisiloxane". Synlett 2011, n.º 14 (21 de julio de 2011): 2102–3. http://dx.doi.org/10.1055/s-0030-1260971.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Fleischer, H., K. Hensen, D. Burgdorf, E. Flindt, U. Wannagat, H. B�rger y G. Pawelke. "1,1,3,3-Tetrachlordisilazan". Zeitschrift f�r anorganische und allgemeine Chemie 621, n.º 2 (febrero de 1995): 239–48. http://dx.doi.org/10.1002/zaac.19956210213.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Vitorino, Joana, Filipe Agapito, M. Fátima M. Piedade, Carlos E. S. Bernardes, Hermínio P. Diogo, João P. Leal y Manuel E. Minas da Piedade. "Thermochemistry of 1,1,3,3-tetramethylguanidine and 1,1,3,3-tetramethylguanidinium nitrate". Journal of Chemical Thermodynamics 77 (octubre de 2014): 179–89. http://dx.doi.org/10.1016/j.jct.2014.01.007.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Gabbutt, Christopher D., B. Mark Heron, Janice M. McCreary y David A. Thomas. "Unusual Aminations with Tetramethylguanidine". Journal of Chemical Research 2002, n.º 2 (febrero de 2002): 69–71. http://dx.doi.org/10.3184/030823402103171302.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Fluck, Ekkehard, Winfried Plass, Gernot Heckmann, Hartmut Bögge y Achim Müller. "1λ5,3 λ5-Diphosphorine (1 λ5,3 λ5-Diphosphabenzole), III [1, 2] / 1 λ5,3 λ5-Diphosphorines (1 λ5,3 λ5-Diphosphabenzenes), III [1, 2]". Zeitschrift für Naturforschung B 46, n.º 2 (1 de febrero de 1991): 202–8. http://dx.doi.org/10.1515/znb-1991-0214.

Texto completo
Resumen
1,1,3,3-Tetrakis(dimethylamino)-diphosphete (3) reacts with diphenylacetylene and bis(trimethylsilyl)butadiin-1 ,3 to give 1,1,3,3-tetrakis(dimethylamino)-4,5-diphenyl-1 λ5,3λ5- diphosphorine (8) and 1,1,3,3-tetrakis(dimethylamino)-5-trimethylsilyl-4-(trimethylsilyl-ethinyl)-1λ5,3 λ5-diphosphorine (9). The new compounds are characterized by their NMR , mass and IR spectra. In addition, the results of an X-ray structure analysis of 9 are reported.
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Foitzik, Richard C., Steven E. Bottle, Jonathan M. White y Peter J. Scammells. "Synthesis of 1,1,3,3-Tetraalkylisoindolines Using a Microwave-Assisted Grignard Reaction". Australian Journal of Chemistry 61, n.º 3 (2008): 168. http://dx.doi.org/10.1071/ch08008.

Texto completo
Resumen
1,1,3,3-Tetraalkylisoindolines are important intermediates in the preparation of stable nitroxides, such as 1,1,3,3-tetramethylisoindolin-2-oxyl, 1, and 1,1,3,3-tetraethylisoindolin-2-oxyl, 2. The limiting step in their preparation is the Grignard reaction between N-benzylphthalimide and the appropriate alkyl magnesium bromide, which typically proceeds in yields of ~28–40%. A microwave-assisted variation of this reaction has been optimized to give improved yields and reduced reaction times (45–60% and 2 h, respectively).
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Kaupang, Åsmund, Carl Henrik Görbitz y Tore Bonge-Hansen. "A solid-state oxidation of 1,1,3,3-tetramethylguanidinium 4-methylbenzenesulfinate to 1,1,3,3-tetramethylguanidinium 4-methylbenzenesulfonate". Acta Crystallographica Section C Crystal Structure Communications 69, n.º 7 (8 de junio de 2013): 778–80. http://dx.doi.org/10.1107/s0108270113015011.

Texto completo
Resumen
The organic acid–base complex 1,1,3,3-tetramethylguanidinium 4-methylbenzenesulfonate, C5H14N3+·C7H7O3S−, was obtained from the corresponding 1,1,3,3-tetramethylguanidinium 4-methylbenzenesulfinate complex, C5H14N3+·C7H7O2S−, by solid-state oxidation in air. Comparison of the two crystal structures reveals similar packing arrangements in the monoclinic space groupP21/c, with centrosymmetric 2:2 tetramers being connected by four strong N—H...O=S hydrogen bonds between the imine N atoms of two 1,1,3,3-tetramethylguanidinium bases and the O atoms of two acid molecules.
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Criado, A., M. J. Diánez, S. Pérez-Garrido, I. M. L. Fernandes, M. Belsley y E. de Matos Gomes. "1,1,3,3-Tetramethylguanidinium dihydrogenorthophosphate". Acta Crystallographica Section C Crystal Structure Communications 56, n.º 7 (1 de julio de 2000): 888–89. http://dx.doi.org/10.1107/s0108270100005187.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
11

Şendıl, Kıvılcım, H. Beytiye Özgün y Ebru Üstün. "Two New 1,1,3,3-Tetramethylguanidinium Halochromates (C5H14N3CrO3X) (X: Cl, F): Efficient Reagents for Oxidation of Organic Substrates under Solvent-Free Conditions and Microwave Irradiation". Journal of Chemistry 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/3518102.

Texto completo
Resumen
Two new mild oxidizing agents 1,1,3,3-tetramethylguanidinium fluorochromate (TMGFC) and 1,1,3,3-tetramethylguanidinium chlorochromate (TMGCC) were prepared in high yields by reacting tetramethylguanidine with CrO3and related acid. These reagents are suitable to oxidize various primary and secondary alcohols and oximes to the corresponding carbonyl compounds under solvent-free conditions and microwave irradiation.
Los estilos APA, Harvard, Vancouver, ISO, etc.
12

Chojnacki, Jaroslaw, Andrzej Robaszkiewicz, Eberhard Matern, Elke Baum y Jerzy Pikies. "cis-Dichloro(di-tert-butylphosphine-κP)(triphenylphosphine-κP)platinum(II) tetrahydrofuran hemisolvate". Acta Crystallographica Section E Structure Reports Online 63, n.º 3 (7 de febrero de 2007): m680—m682. http://dx.doi.org/10.1107/s1600536807005259.

Texto completo
Resumen
The title compound, [PtCl2(C8H19P)(C18H15P)]·0.5C4H8O, was obtained in the reaction of bis(triphenylphosphine)platinum(II) chloride with 1,1,3,3-tetra-tert-butyl-2-trimethylsilyltriphosphine. The 31P{1H} NMR spectrum of the reaction mixture shows the formation of the title compound together with a significant amount of triphenylphosphine and 1,1,3,3-tetra-tert-butyltriphosphine.
Los estilos APA, Harvard, Vancouver, ISO, etc.
13

Tiritiris, Ioannis. "2-Acetyl-1,1,3,3-tetramethylguanidine". Acta Crystallographica Section E Structure Reports Online 68, n.º 10 (26 de septiembre de 2012): o2996. http://dx.doi.org/10.1107/s1600536812039724.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
14

Fuks, Gad, Nathalie Saffon, Didier Bourissou y Guy Bertrand. "2,2,4,4-Tetrabromo-1,1,3,3-tetramethylcyclodiborazane". Acta Crystallographica Section E Structure Reports Online 63, n.º 11 (31 de octubre de 2007): o4476. http://dx.doi.org/10.1107/s1600536807052385.

Texto completo
Resumen
The title compound, C4H12B2Br4N2, contains an almost square four-membered ring that results from the head-to-tail dimerization of the dimethylaminodibromoborane. The dimer has almost mmm symmetry and does have 2/m crystallographic symmetry. The crystal structure involves C—H...Br hydrogen bonds.
Los estilos APA, Harvard, Vancouver, ISO, etc.
15

Gilardi, R., C. George y J. L. Flippen-Anderson. "Structure of 1,1,3,3-tetranitrocyclobutane". Acta Crystallographica Section C Crystal Structure Communications 48, n.º 9 (15 de septiembre de 1992): 1680–81. http://dx.doi.org/10.1107/s0108270192000702.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
16

Kropidłowska, Anna, Ilona Turowska-Tyrk y Barbara Becker. "1,3-Diethyl-1,1,3,3-tetraphenyldisiloxane". Acta Crystallographica Section E Structure Reports Online 63, n.º 2 (24 de enero de 2007): o855—o857. http://dx.doi.org/10.1107/s1600536807002139.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
17

Tamao, Kohei. "ChemInform Abstract: 1,1,3,3-Tetramethyldisilazane". ChemInform 43, n.º 27 (11 de junio de 2012): no. http://dx.doi.org/10.1002/chin.201227242.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
18

Gorbunova, Marina N. y Aleksandr Aleksandrovich Maltsev. "Radical copolymerization of 2,2-diallyl-1,1,3,3-tetraethylguanidinium chloride with acrylic acid". Вестник Пермского университета. Серия «Химия» = Bulletin of Perm University. CHEMISTRY 12, n.º 2 (2022): 99–106. http://dx.doi.org/10.17072/2223-1838-2022-2-99-106.

Texto completo
Resumen
Radical copolymerization of 2,2-diallyl-1,1,3,3-tetraethylguanidium chloride with acrylic acid in bulk and in organic solution has been studied. It has been established that the copolymerization proceeds with the formation of acid-enriched random copolymers. Kinetic regularities of the copolymerization reaction were investigated and it was found that with increasing proportion of 2,2-diallyl-1,1,3,3-tetraethylguanidinium chloride in the initial monomer mixture, the rate of the copolymerization reaction decreases.
Los estilos APA, Harvard, Vancouver, ISO, etc.
19

Kantlehner, Willi, Ivo C. Ivanov y Ioannis Tiritiris. "Orthoamides and Iminium Salts, LXXV [1]. Contribution to the Formation of 2-Formyl-1,1,3,3-tetramethylguanidine and the Isomeric 1,1-Dimethyl-3-dimethylaminomethylene-urea". Zeitschrift für Naturforschung B 67, n.º 4 (1 de abril de 2012): 331–36. http://dx.doi.org/10.1515/znb-2012-0406.

Texto completo
Resumen
2-Formyl-1,1,3,3-tetramethylguanidine (1) could be prepared from tris(dimethylamino)ethoxymethane (3a) and formamide (4). Surprisingly, guanidine 1 does not result from the reaction of 1,1,3,3-tetramethylguanidine with formylating reagents such as dimethylamino-methoxy-acetonitrile (8) or the N,N-dimethylformamide-dimethylsulfate adduct (9), rather the isomeric 1,1-dimethyl-3- dimethylaminomethylene-urea (2) is formed. The structure of 2 was confirmed by NMR spectroscopy and crystal structure analysis.
Los estilos APA, Harvard, Vancouver, ISO, etc.
20

Addala, Abderezak, Zouaoui Setifi, Yukio Morimoto, Beñat Artetxe, Takashi Matsumoto, Juan M. Gutiérrez-Zorrilla y Christopher Glidewell. "Six tris(bipyridyl)iron(II) complexes with 2-substituted 1,1,3,3-tetracyanopropenide, perchlorate and tetrafluoridoborate anions; order versus disorder, hydrogen bonding and C—N...π interactions". Acta Crystallographica Section E Crystallographic Communications 74, n.º 12 (6 de noviembre de 2018): 1717–26. http://dx.doi.org/10.1107/s2056989018015426.

Texto completo
Resumen
Structures are reported for six closely related salts of tris(bipyridyl)iron(II) cations, namely tris(2,2′-bipyridine)iron(II) bis(1,1,3,3-tetracyano-2-methoxypropenide) 0.776-hydrate, [Fe(C10H8N2)3](C8H3N4O)2.0.776H2O, (I), tris(2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-(propylsulfanyl)propenide perchlorate, [Fe(C10H8N2)3](C10H7N4S)(ClO4), (II), tris(5,5′-dimethyl-2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-methoxypropenide tetrafluoridoborate ethanol 0.926-solvate, [Fe(C12H12N2)3](C8H3N4O)(BF4).0.926C2H2O, (III), tris(5,5′-dimethyl-2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-ethoxypropenide tetrafluoridoborate, [Fe(C12H12N2)3](C9H5N4O)(BF4), (IV), tris(5,5′-dimethyl-2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-(ethylsufanyl)propenide tetrafluoridoborate, [Fe(C12H12N2)3](C9H5N4S)(BF4), (V), and tris(5,5′-dimethyl-2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-propoxypropenide tetrafluoridoborate, [Fe(C12H12N2)3](C10H7N4O)(BF4), (VI). In compound (I), one of the anions is disordered over two sets of atomic sites with equal occupancies while, in the second anion, just one of the C(CN)2 units is disordered, again over two sets of atomic sites with equal occupancies: the anionic components are linked by multiple C—H...N hydrogen bonds to form a three-dimensional framework. In compound (II), the polynitrile anion is disordered over two sets of atomic sites with occupancies in the approximate ratio 3:1, while the perchlorate anion is disordered over three sets of atomic sites: there are C—N...π interactions between the cations and the polynitrile anion. The polynitrile anion in compound (III) is fully ordered, but the tetrafluoridoborate anion is disordered over two sets of atomic sites with occupancies 0.671 (4) and 0.329 (4): the cations and the tetrafluoridoborate anions are linked by C—H...F interactions to form an interrupted chain. Compounds (IV) and (V) are isostructural and all of the ionic components are fully ordered in both of them: the cations and tetrafluoridoborate anions are linked into C 2 2(12) chains. The polynitrile anion in compound (VI) is disordered over two sets of atomic sites with approximately equal occupancies, and here the chains formed by the cations and the tetrafluoridoborate anions are of the C 2 2(13) type.
Los estilos APA, Harvard, Vancouver, ISO, etc.
21

Plass, Winfried, Gernot Heckmann, Ekkehard Fluck, Carl Krüger y Stefan Werner. "Die Reaktion von 1,1,3,3-Tetrakis(dimethylamino)-1 λ5,3 λ5-diphosphet mit Nitrilen / The Reaction of 1,1,3,3-Tetrakis(dimethylamino)-1 λ5,3 λ5-diphosphete with Nitriles". Zeitschrift für Naturforschung B 45, n.º 11 (1 de noviembre de 1990): 1487–94. http://dx.doi.org/10.1515/znb-1990-1104.

Texto completo
Resumen
Reaction of 1,1,3,3-tetrakis(dimethylamino)-lλ5,3λ5-diphosphete (1) with perfluorobenzonitrile yields 1,1,3,3-tetrakis(dimethylamino)-4-(4-cyano-2,3,5,6-tetrafluorophenyl)-1 -fluoro-1λ5,3λ5-diphosphabuta-1,3-diene (3); reaction of 1 with benzoisonitrile gives 2,2,4,4-tetrakis(dimethylamino)-1-isocyano-1-phenyl-2λ5,4λ5-diphosphapenta-1,3-diene (4). The new products 3 and 4 are characterized by their NMR, mass, and IR spectra. The mechanism of formation is discussed. The structure of 3 was elucidated by an X-ray structural analysis.
Los estilos APA, Harvard, Vancouver, ISO, etc.
22

Jüschke, Ralf, Gerald Henkel y Peter Sartori. "Synthese und Struktur von Kalium-4,4-difluor-[1,3,2]dithiazetidinid-1,l,3,3-tetraoxid und Rubidium-4,4,5,5-tetrafluor-[1,3,2]dithiazolidinid-1,1,3,3-tetraoxid / Syntheses and Structure of Potassium-4,4-difluoro-[1,3,2]dithiazetidinide-1,1,3,3- tetraoxide and Rubidium-4,4,5,5-tetrafluoro-[ 1,3,2]dithiazolidinide-1,1,3,3-tetraoxide". Zeitschrift für Naturforschung B 52, n.º 3 (1 de marzo de 1997): 359–66. http://dx.doi.org/10.1515/znb-1997-0311.

Texto completo
Resumen
Abstract Reactions of perfluoroalkane-1,n-bis(sulfonylfluorides) (n = 1-2) (1-2) with liquid ammonia in tetrahydrofuran (TH F) lead to the cyclic ammonium imides 3-4. These cyclic imides 3-4 can easily be transform ed to other salts using the corresponding hydroxides. X -ray structure analyses (T = 150 K) were perform ed for the potassium 4,4-difluoro-[1,3,2]dithiazetidinide-1,1,3,3-tetraoxide 5 and rubidium -4,4,5,5-tetrafluoro-[1,3,2]dithiazolidinide-1,1,3,3-tetraoxide 6. Cylic imides of the type 3, 5 have not been reported previously. Their formation and their nmr-data are discussed.
Los estilos APA, Harvard, Vancouver, ISO, etc.
23

Elnagar, Hassan Y., Mahmood Sabahi, Vince J. Gatto y Frank R. Fronczek. "2,5-Bis(1,1,3,3-tetramethylbutyl)thiophene". Acta Crystallographica Section E Structure Reports Online 64, n.º 12 (20 de noviembre de 2008): o2396. http://dx.doi.org/10.1107/s1600536808037434.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
24

Amini, Mostafa M., Shabnam Hossein Abadi, Mahdi Mirzaee, Thomas Lügger, F. Ekkehardt Hahn y Seik Weng Ng. "Bis(1,1,3,3-tetramethyl-1,3-dibenzoatodistannoxane)". Acta Crystallographica Section E Structure Reports Online 58, n.º 12 (15 de noviembre de 2002): m697—m699. http://dx.doi.org/10.1107/s1600536802020020.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
25

Gassman, Paul G., Daniel A. Singleton y Hiroyuki Kagechika. "The unsymmetrical 1,1,3,3-tetramethylallyl cation". Journal of the American Chemical Society 113, n.º 16 (julio de 1991): 6271–72. http://dx.doi.org/10.1021/ja00016a054.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
26

Bernard, Josef, Christoph Schnieders y Klaus Müllen. "Lithium 2-lithio-1,1,3,3-tetraphenylpropenide". J. Chem. Soc., Chem. Commun., n.º 1 (1985): 12–14. http://dx.doi.org/10.1039/c39850000012.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
27

Smith, Graham y Urs D. Wermuth. "1,1,3,3-Tetraethylisoindolin-2-ium chloride". Acta Crystallographica Section E Structure Reports Online 68, n.º 3 (10 de febrero de 2012): o659. http://dx.doi.org/10.1107/s1600536812004588.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
28

Knorr, Rudolf, Thomas Menke, Johannes Freudenreich y Claudio Pires. "Carbenoid-mediated nucleophilic “hydrolysis” of 2-(dichloromethylidene)-1,1,3,3-tetramethylindane with DMSO participation, affording access to one-sidedly overcrowded ketone and bromoalkene descendants§". Beilstein Journal of Organic Chemistry 10 (31 de enero de 2014): 307–15. http://dx.doi.org/10.3762/bjoc.10.28.

Texto completo
Resumen
2-(Dichloromethylidene)-1,1,3,3-tetramethylindane was “hydrolyzed” by solid KOH in DMSO as the solvent at ≥100 °C through an initial chlorine particle transfer to give a Cl,K-carbenoid. This short-lived intermediate disclosed its occurrence through a reversible proton transfer which competed with an oxygen transfer from DMSO that created dimethyl sulfide. The presumably resultant transitory ketene incorporated KOH to afford the potassium salt of 1,1,3,3-tetramethylindan-2-carboxylic acid (the product of a formal hydrolysis). The lithium salt of this key acid is able to acylate aryllithium compounds, furnishing one-sidedly overcrowded ketones along with the corresponding tertiary alcohols. The latter side-products (ca. 10%) were formed against a substantially increasing repulsive resistance, as testified through the diminished rotational mobility of their aryl groups. As a less troublesome further side-product, the dianion of the above key acid was recognized through carboxylation which afforded 1,1,3,3-tetramethylindan-2,2-dicarboxylic acid. Brominative deoxygenation of the ketones furnished two one-sidedly overcrowded bromoalkenes. Some presently relevant properties of the above Cl,K-carbenoid are provided in Supporting Information File 1.
Los estilos APA, Harvard, Vancouver, ISO, etc.
29

Zerbe, Eva-Maria, Christoph Wölper y Peter G. Jones. "Aminkomplexe von Silber(I)-disulfonylamiden, Teil I: Sekund¨are Amine [1]". Zeitschrift für Naturforschung B 66, n.º 5 (1 de mayo de 2011): 449–58. http://dx.doi.org/10.1515/znb-2011-0503.

Texto completo
Resumen
We report the crystal structures of five amine-complexed silver(I) disulfonylamides of composition L2AgX (L = secondary amine, X = disulfonylamide anion) [1: bis(2,2,6,6-tetramethylpiperidine)- silver(I) dimesylamide, 2: bis(2,2,6,6-tetramethylpiperidine)(1,1,3,3-tetraoxo-1,3,2-benzodithiazolido) silver(I), 3: bis(diethylamine)(dimesylamido)silver(I), 4: bis(diethylamine)silver(I) 1,1,3,3-tetraoxo- 1,3,2-benzodithiazolide, 5: bis(dicyclohexylamine)silver(I) 1,1,3,3-tetraoxo-1,3,2-benzodithiazolide]. In the solid state 1, 4 and 5 are ionic compounds, whereas 2 and 3 appear to be molecular, but with long Ag-Ndisulfonylamide bonds (ca. 2.5 Å ), almost linear Namine-Ag-Namine bond angles (171, 158°) and S-N bond lengths more typical of purely ionic disulfonylamides. The packing of these complexes is governed by the formation of chains via motifs of Ag・ ・ ・O contacts and classical hydrogen bonds. The interaction motifs vary slightly depending on the steric demand of the amine substituents. For the molecular compounds, either new motifs appear (3) or intramolecular classical hydrogen bonds are formed, and linear arrays of molecules are generated by non-classical hydrogen bonds (2)
Los estilos APA, Harvard, Vancouver, ISO, etc.
30

Regnier, Vianney, Florian Molton, Christian Philouze y David Martin. "An air-persistent oxyallyl radical cation with simple di(methyl)amino substituents". Chemical Communications 52, n.º 76 (2016): 11422–25. http://dx.doi.org/10.1039/c6cc06260a.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
31

Zhou, Jiangjun, Mang Wu, Qiang Peng, Feng Jiang, Haowei Pan, Baoxia Wang, Shengquan Liu y Zhongkai Wang. "Highly efficient strategies toward sustainable monomers and polymers derived from fatty acids via tetramethylguanidine promoted esterification". Polymer Chemistry 9, n.º 21 (2018): 2880–86. http://dx.doi.org/10.1039/c8py00505b.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
32

Bortoluzzi, Marco, Fabio Marchetti, Guido Pampaloni y Stefano Zacchini. "A crystallographically characterized salt of self-generated N-protonated tetraethylurea". Chemical Communications 51, n.º 7 (2015): 1323–25. http://dx.doi.org/10.1039/c4cc08801h.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
33

Strohmann, Carsten y Eric Wack. "Bis-, Tris- and Tetrakis(lithiomethyl)germanes: New Building Blocks for Organogermanium Compounds". Zeitschrift für Naturforschung B 59, n.º 11-12 (1 de diciembre de 2004): 1570–78. http://dx.doi.org/10.1515/znb-2004-11-1230.

Texto completo
Resumen
Bis(lithiomethyl)germanes, R2Ge(CH2Li)2, tris(lithiomethyl)germanes, RGe(CH2Li)3, and tetrakis( lithiomethyl)germane, Ge(CH2Li)4, were prepared by the reductive C-S bond cleavage with lithium naphthalenide (LiC10H8) or lithium p,p’-di-tert-butylbiphenylide (LiDBB) and characterized by trapping with Bu3SnCl. The bis(lithiomethyl)germanes were used for the synthesis of 1,1-dimethyl-3,3-diphenyl-1-germa-3-silacyclobutane, 1,1-diethyl-3,3-diphenyl-1-germa-3-silacyclobutane, 1,1,3,3-tetraphenyl-1-germa-3-silacyclobutane and 1,1,3,3-tetraphenyl-1,3-digermacyclobutane. The single-crystal X-ray diffraction studies of methyltris(phenylthiomethyl)germane and tetrakis(phenylthiomethyl)germane, starting materials for the corresponding poly(lithiomethyl) germanes, indicate tetrahedrally arranged substituents at the germanium atoms.
Los estilos APA, Harvard, Vancouver, ISO, etc.
34

Wayner, Danial D. M. y Donald R. Arnold. "1,n-Radical ions. Photosensitized (electron transfer) and electrochemical oxidation of 1,1,2,2-tetraphenylcyclopropane". Canadian Journal of Chemistry 63, n.º 4 (1 de abril de 1985): 871–81. http://dx.doi.org/10.1139/v85-145.

Texto completo
Resumen
The photosensitized (electron transfer) and the electrochemical oxidation of 1,1,2,2-tetraphenylcyclopropane (1) have been studied. The products obtained from the photosensitized (electron transfer) study are 1,1,3,3-tetraphenylpropene (2), 1,3,3-triphenylindene (3), tetraphenylallene (4), and 3-methoxy-1,1,3,3-tetraphenylpropene (8). The product ratios are dramatically dependent upon the reaction conditions, particularly sensitizer (aromatic nitriles, tetracyanoethylene, chloranil, and 2,3-dichloro-5,6-dicyanobenzoquinone were used), and solvent. The variations in product ratios are attributed to variations in the redox behaviour of the sensitizer radical anion and upon the basicity and nucleophilicity of the medium. The products in the electrochemical study are 3, 4, and 8. Common intermediates have been identified and a mechanism for the formation of products is proposed.
Los estilos APA, Harvard, Vancouver, ISO, etc.
35

O'Leary, Brian, Trevor R. Spalding, George Ferguson y Christopher Glidewell. "Oligosiloxanediols as building blocks for supramolecular chemistry: hydrogen-bonded adducts with amines form supramolecular structures in zero, one and two dimensions". Acta Crystallographica Section B Structural Science 56, n.º 2 (1 de abril de 2000): 273–86. http://dx.doi.org/10.1107/s0108768199013051.

Texto completo
Resumen
The structure of 1,1,3,3,5,5-hexaphenyltrisiloxane-1,5-diol–pyrazine (4/1), (C36H32O4Si3)4·C4H4N2 (1), contains finite centrosymmetric aggregates; the diol units form dimers, by means of O—H...O hydrogen bonds, and pairs of such dimers are linked to the pyrazine by means of O—H...N hydrogen bonds. In 1,1,3,3,5,5-hexaphenyltrisiloxane-1,5-diol–pyridine (2/3), (C36H32O4Si3)2·(C5H5N)3 (2), the diol units are linked into centrosymmetric pairs by means of disordered O—H...O hydrogen bonds: two of the three pyridine molecules are linked to the diol dimer by means of ordered O—H...N hydrogen bonds, while the third pyridine unit, which is disordered across a centre of inversion, links the diol dimers into a C 3 3(9) chain by means of O—H...N and C—H...O hydrogen bonds. In 1,1,3,3-tetraphenyldisiloxane-1,3-diol–hexamethylenetetramine (1/1), (C24H22O3Si2)·C6H12N4 (3), the diol acts as a double donor and the hexamethylenetetramine acts as a double acceptor in ordered O—H...N hydrogen bonds and the structure consists of C 2 2(10) chains of alternating diol and amine units. In 1,1,3,3-tetraphenyldisiloxane-1,3-diol–2,2′-bipyridyl (1/1), C24H22O3Si2·C10H8N2 (4), there are two independent diol molecules, both lying across centres of inversion and therefore both containing linear Si—O—Si groups: each diol acts as a double donor of hydrogen bonds and the unique 2,2′-bipyridyl molecule acts as a double acceptor, thus forming C 2 2(11) chains of alternating diol and amine units. The structural motif in 1,1,3,3-tetraphenyldisiloxane-1,3-diol–pyrazine (2/1), (C24H22O3Si2)2·C4H4N2 (5), is a chain-of-rings: pairs of diol molecules are linked by O—H...O hydrogen bonds into centrosymmetric R 2 2(12) dimers and these dimers are linked into C 2 2(13) chains by means of O—H...N hydrogen bonds to the pyrazine units. 1,1,3,3-Tetraphenyldisiloxane-1,3-diol–pyridine (1/1), C24H22O3Si2·C5H5N (6), and 1,1,3,3-tetraphenyldisiloxane-1,3-diol–pyrimidine (1/1), C24H22O3Si2·C4H4N2 (7), are isomorphous: in each compound the amine unit is disordered across a centre of inversion. The diol molecules form C(6) chains, by means of disordered O—H...O hydrogen bonds, and these chains are linked into two-dimensional nets built from R 6 6(26) rings, by a combination of O—H...N and C—H...O hydrogen bonds.
Los estilos APA, Harvard, Vancouver, ISO, etc.
36

Li, Kai, Zheng Li, Yong Shen, Xiaohui Fu, Chongyi Chen y Zhibo Li. "Organobase 1,1,3,3-tetramethyl guanidine catalyzed rapid ring-opening polymerization of α-amino acid N-carboxyanhydrides adaptive to amine, alcohol and carboxyl acid initiators". Polymer Chemistry 13, n.º 5 (2022): 586–91. http://dx.doi.org/10.1039/d1py01508g.

Texto completo
Resumen
For amine, hydroxyl and carboxyl terminated initiators, the organobase 1,1,3,3-tetramethylguanidine (TMG) catalyzes the rapid polymerization to afford polypeptides with controllable molecular weights and dispersities.
Los estilos APA, Harvard, Vancouver, ISO, etc.
37

Fluck, Ekkehard, Gerd Becker, Bernhard Neumüller, Robert Kneb, Gemot Heckman y Heinz Riffel. "Ein Derivat des 1λ5,3λ5,5λ3-Triphosphabenzols / A Derivative of 1λ5,3λ5,5λ3-Triphosphabenzene". Zeitschrift für Naturforschung B 42, n.º 10 (1 de octubre de 1987): 1213–21. http://dx.doi.org/10.1515/znb-1987-1001.

Texto completo
Resumen
Abstract The title compound was prepared by reacting 1,1,3,3-tetrakis(dimethylamino)-1λ5,3λ5-diphosphete with 2,2-dimethylpropylidynephosphane and characterized by NMR spectra and X-ray structure analysis.
Los estilos APA, Harvard, Vancouver, ISO, etc.
38

Iimura, Tomohiro, Naohiko Akasaka, Tomoyuki Kosai y Takeaki Iwamoto. "A Pt(0) complex with cyclic (alkyl)(amino)silylene and 1,3-divinyl-1,1,3,3-tetramethyldisiloxane ligands: synthesis, molecular structure, and catalytic hydrosilylation activity". Dalton Transactions 46, n.º 27 (2017): 8868–74. http://dx.doi.org/10.1039/c7dt01113j.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
39

Neuba, Adam, Ulrich Flörke y Gerald Henkel. "2-[2-(Benzylsulfanyl)phenyl]-1,1,3,3-tetramethylguanidine". Acta Crystallographica Section E Structure Reports Online 67, n.º 5 (22 de abril de 2011): o1202—o1203. http://dx.doi.org/10.1107/s1600536811014577.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
40

Shi, Da-Xin, Li-Jun Zhang, Qi Zhang y Jia-Rong Li. "2-Methyl-1,1,3,3-tetraphenylpropan-2-ol". Acta Crystallographica Section E Structure Reports Online 64, n.º 6 (21 de mayo de 2008): o1115. http://dx.doi.org/10.1107/s1600536808014761.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
41

Özcan, Özlem, Zeynep Gültekin, Wolfgang Frey y Tuncer Hökelek. "2-Methoxymethyl-1,3-dithiolane 1,1,3,3-tetraoxide". Acta Crystallographica Section E Structure Reports Online 59, n.º 6 (9 de mayo de 2003): o747—o749. http://dx.doi.org/10.1107/s1600536803009371.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
42

Gültekin, Zeynep, Wolfgang Frey y Tuncer Hökelek. "2-Methoxymethyl-1,3-dithiepane 1,1,3,3-tetraoxide". Acta Crystallographica Section E Structure Reports Online 59, n.º 9 (8 de agosto de 2003): o1251—o1253. http://dx.doi.org/10.1107/s1600536803016684.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
43

GILARDI, R., C. GEORGE y J. L. FLIPPEN-ANDERSON. "ChemInform Abstract: Structure of 1,1,3,3-Tetranitrocyclobutane". ChemInform 23, n.º 51 (22 de diciembre de 1992): no. http://dx.doi.org/10.1002/chin.199251039.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
44

Wiese, Dietmar, Ulrich Wannagat, Ulf Thewalt y Tony Debaerdemae. "1,3-Bis(2-benzoylphenyl)-1,1,3,3-tetramethyldisiloxan". Chemische Berichte 120, n.º 6 (junio de 1987): 873–78. http://dx.doi.org/10.1002/cber.19871200602.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
45

Schmidbaur, Hubert, Christos Paschalidis, Oliver Steigelmann y Gerhard Müller. "5-Methyl-1,1,3,3-tetraphenyl-1λ5,3λ5-diphosphabenzol". Angewandte Chemie 102, n.º 5 (mayo de 1990): 569–71. http://dx.doi.org/10.1002/ange.19901020523.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
46

Basenko, S. V., A. A. Maylyan y A. S. Soldatenko. "New Approach to the Synthesis of Symmetrical 1,3-Dichloro-1,1,3,3-Tetraorganyl- and 1,1,3,3-Tetrachloro-1,3- Diorganyldisiloxanes". Silicon 10, n.º 2 (28 de diciembre de 2016): 465–70. http://dx.doi.org/10.1007/s12633-016-9474-0.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
47

Li, Qianbiao, Taisheng Wang, Jingwen Dai, Chao Ma, Bangkun Jin y Ruke Bai. "A facile one pot strategy for the synthesis of well-defined polyacrylates from acrylic acid via RAFT polymerization". Chem. Commun. 50, n.º 25 (2014): 3331–34. http://dx.doi.org/10.1039/c3cc49286a.

Texto completo
Resumen
Linear and hyperbranched polyacrylates were successfully synthesized by the combination of in situ esterification of acrylic acid with halogenated compounds promoted by 1,1,3,3-tetramethylguanidine (TMG) and RAFT polymerization.
Los estilos APA, Harvard, Vancouver, ISO, etc.
48

Egorov, Ilya N., Vladimir L. Rusinov y Oleg N. Chupakhin. "Synthesis of Chiral Pyrimidin-2(1H)-ones from N-Carbamoyl Amino Acids". Zeitschrift für Naturforschung B 68, n.º 11 (1 de noviembre de 2013): 1253–58. http://dx.doi.org/10.5560/znb.2013-3129.

Texto completo
Resumen
A series of previously unknown pyrimidin-2(1H)-ones containing chiral amino acid fragments was synthesized from 1,1,3,3-tetramethoxypropane and N-carbamoyl derivatives of amino acids under acidic conditions.
Los estilos APA, Harvard, Vancouver, ISO, etc.
49

Yaghoubi Kalurazi, Sorayya, Kurosh Rad-Moghadam y Shahram Moradi. "Efficient catalytic application of a binary ionic liquid mixture in the synthesis of novel spiro[4H-pyridine-oxindoles]". New Journal of Chemistry 41, n.º 18 (2017): 10291–98. http://dx.doi.org/10.1039/c7nj01858d.

Texto completo
Resumen
Novel pyrazole-fused spiro[4H-pyridine-oxindoles] were synthesized under the catalysis of the binary ionic liquid mixture [1,1,3,3-tetramethylguanidinium chloride][1-methylimidazolium-3-sulfonate] in solvent-free conditions.
Los estilos APA, Harvard, Vancouver, ISO, etc.
50

Santos, Evelyn C. S., Thiago C. dos Santos, Renato B. Guimarães, Lina Ishida, Rafael S. Freitas y Célia M. Ronconi. "Guanidine-functionalized Fe3O4 magnetic nanoparticles as basic recyclable catalysts for biodiesel production". RSC Advances 5, n.º 59 (2015): 48031–38. http://dx.doi.org/10.1039/c5ra07331f.

Texto completo
Resumen
Two organic superbases, 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) and 1,1,3,3-tetramethylguanidine (TMG), were anchored onto silica-coated and uncoated iron oxide nanoparticles, resulting in three recoverable basic nanocatalysts.
Los estilos APA, Harvard, Vancouver, ISO, etc.
Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!

Pasar a la bibliografía