Готові списки джерел за темами / Cp2TiCl

Добірка наукової літератури з теми "Cp2TiCl"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Cp2TiCl"

1

Cozak, Daniel, Abdelhakim Mardhy та André Morneau. "Titanocene derivatives of purine and adenine. Synthesis and characterization of reaction products with (η5-C5H5)2Ti(CO)2, (η5-C5H5)2TiCl, and (η5-C5H5)2TiCl2". Canadian Journal of Chemistry 64, № 4 (1 квітня 1986): 751–59. http://dx.doi.org/10.1139/v86-121.

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Анотація:
The reaction of CpTi(CO)2 (1), Cp2TiCl (2), and Cp2TiCl2 (3) (Cp = η5-C5H5) with purine (PuH) and adenine (AdH) in organic solvents is described. The compound 1 reacts with both molecules in an oxidative fashion giving Cp2Ti(C5H3N4)(C5H4N4) (4) and (Cp2Ti)2(C5H3N5) (5) with concomitant liberation of molecular carbon monoxide and hydrogen (4:1) following a first order rate law in metal complex. The compound 2 forms an adduct compound Cp2TiCl(C5H4N4) (6) with PuH. Monosubstituted derivatives Cp2TiCl(C5H3N4) (7) and Cp2TiCl(C5H4N5) (8) are formed from the reaction of the deprotonated bases with 3. In addition to the usual elemental analysis, the characteristic ir, 1H nmr, epr, and ms results are given for the new compounds.
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2

Maué, Paul G., and Dieter Fenske. "Zur Reaktion von [Cp2TiCl2] und [CpTiCl3] mit E(SiMe3)2 (E = S, Se) Die Kristallstrukturen von [Cp3Ti2S2Cl], [Cp4Ti2S2Cl2], [Cp3Ti2Se2Cl] und [Cp4Ti4Se7O] / Reaction of [Cp2TiCl2] and [CpTiCl3 ] with E(SiMe 3)2 (E = S. Se) The Crystal Structures of [Cp3Ti2S2Cl], [Cp3Ti2S2Cl2], [Cp3Ti2Se2Cl] and [Cp4Ti4Se7O]." Zeitschrift für Naturforschung B 43, no. 10 (October 1, 1988): 1213–18. http://dx.doi.org/10.1515/znb-1988-1001.

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Abstract The reaction of [Cp2TiCl2 ] with E(SiMe3)2 leads to dinuclear Ti complexes. In [Cp3Ti2S2Cl] (1) and [Cp3Ti2Se2Cl] (3) two μ2 -S(Se) ligands bridge the Cp2Ti and CpTiCl units, respectively in contrast to these, [Cp4Ti2S2Cl2] (2) contains a μ2η1-S2 bridge connecting two Cp2TiCl fragments. A similar reaction of [CpTiCl3] with Se(SiMe3)2 leads to the tetranuclear cluster [Cp4Ti4Se7O] (4). 4 consists of a Ti4 -tetrahedron which encloses an oxygen atom.
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3

Thewalt, Ulf, and Reinhard Friedrich. "Cp2TiIV-Komplexe mit Oximatoliganden / Cp2TiIV Complexes with Oximato Ligands." Zeitschrift für Naturforschung B 46, no. 4 (April 1, 1991): 475–82. http://dx.doi.org/10.1515/znb-1991-0409.

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The reaction of Cp2TiCl2 with oximes in the two phase system (CHCl3, Cp2TiCl2)/(H2O, NaOH, oxime) leads to ionic complexes of the type [Cp2TiIV(H2O)(oximato)]+X-. Several complexes of this type were prepared. They are surprisingly stable against air and water. The following compounds are described in detail: [Cp2Ti(H2O)(ONC6H10)]NO3 (8) containing a cyclohexanoneoximato ligand, and two complexes with 1,4-cyclohexanedionedioximato ligands, namely the mononuclear complex [Cp2Ti(H2O)(ONC6H8NOH)]Cl · H2O (9) and the dinuclear complex [Cp2Ti(H2O)(ONC6H8NO)(H2O)TiCp2](NO3)2 · 4H2O (10). X-ray structure determinations show, that the ON fragment of the oximato ligand acts as side-on bonded three-electron donating ligand. The Ti atom thus has an 18-electron configuration.
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4

Breunig, H. J., O. Moldovan, M. Nema, U. Rosenthal, C. I. Rat, and R. A. Varga. "Formation of [Cp2TiSbMe2]2, [Cp2TiSb(SiMe3)2]2 and [Cp2TiCl]2·2Mes4Sb2." Journal of Organometallic Chemistry 696, no. 2 (January 2011): 523–26. http://dx.doi.org/10.1016/j.jorganchem.2010.09.007.

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5

Srivastava, A. K., O. P. Pandey, and S. K. Sengupta. "Synthesis, Spectral and Antimicrobial Studies of Bis(cyclopentadienyl)titanium(IV) Derivatives with Schiff Bases Derived from 2-Amino-5-phenyl-1,3,4-thiadiazole." Bioinorganic Chemistry and Applications 3, no. 3-4 (2005): 289–97. http://dx.doi.org/10.1155/bca.2005.289.

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Анотація:
The reactions of bis(cyclopentadienyl)titanium(IV) dichloride with Schiff bases derived by condensing 2- amino-5-phenyl-1,3,4-thiadiazole with benzaldehyde (SPT), 4-nitrobenzaldehyde (SNT), 4-methoxybenzaldehyde (SMT), 2-hydroxybenzaldehyde (SSTH) or 2-hydroxyacetophenone (SATH) have been studied in refluxing tetrahydrofuran and complexes of types [Cp2TiCl(SB)]Cl (SB= SPT, SNT or SMT) and [Cp2Ti(SB')]Cl (SB'H= SSTH or SATH) have been isolated. Tentative structural conclusions are drawn for these reaction products based upon elemental analyses, electrical conductance, magnetic moment and spectral (UV-vis, IR and1H NMR) data. Studies were conducted to assess the growth-inhibiting potential of the complexes synthesized, and the ligands, against various fungal and bacterial strains.
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6

Rosales, Jennifer, Gustavo Cabrera, and José Justicia. "Exploring Short and Efficient Synthetic Routes Using Titanocene(III)-Catalyzed Reactions: Total Synthesis of Natural Meroterpenes with Trisubstituted Unsaturations." Molecules 27, no. 8 (April 8, 2022): 2400. http://dx.doi.org/10.3390/molecules27082400.

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The stereo- and regioselective total syntheses of OMe derivatives of the scarce bioactive meroterpenoids makassaric acid (1) and fascioquinol B (2) have been accomplished. The synthetic sequences are based on the following three efficient and selective catalytic reactions: Cu-catalyzed addition of Grignard compounds to an epoxide; a regioselective Barbier-type reaction, catalyzed by Cp2TiCl; and regio- and stereoselective bioinspired cyclization, also catalyzed by Cp2TiCl. These three key processes allow us to obtain the main skeletons of 1 and 2 in a few steps. The valuable synthetic proposal shown in this work provides fast access to scarce, structurally complex meroterpenes with promising biological activities, which are a sustainable source for later studies and applications in medicine.
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7

Song, Li-Cheng, Cong Han, Qing-Mei Hu, and Zhi-Pan Zhang. "Synthesis of new organotitanium (IV) complexes Cp2Ti(SeR)2 and Cp2TiCl(SeR) via tandem reactions involving `Cp2Ti' intermediate. Crystal structures of Cp2TiCl(SeR) (R=p-ClC6H4, p-BrC6H4)." Inorganica Chimica Acta 357, no. 8 (June 2004): 2199–204. http://dx.doi.org/10.1016/j.ica.2003.06.011.

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8

Rosales Martínez, Antonio, Juan F. García-Martín, and Ignacio Rodríguez-García. "Cp2TiCl/H2O as a Sustainable System for the Reduction of Organic Functional Groups: Potential Application of Cp2TiCl/D2O to the Analysis of Bioactive Phenols in Olive Oil." Processes 11, no. 4 (March 23, 2023): 979. http://dx.doi.org/10.3390/pr11040979.

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Анотація:
Significant efforts have been made toward developing sustainable reduction reactions of organic and bioorganic compounds. In these studies, the selection of reagents and solvents has played a very important role in the development of environment-friendly methodologies. In this context, the reducing agent Cp2TiCl/H2O has been introduced as a safe, efficient, selective, and low-cost reagent, and thus as a sustainable alternative for the reduction of organic compounds. To facilitate understanding of the reductions mediated by this system, in this study we focus on describing the intermediates, mechanisms, and representative examples. Finally, a reflection is made on the future perspectives of this reducing agent, including its analog Cp2TiCl/D2O as a powerful tool for the preparation of deuterated phenols, which can be successfully used as an internal standard for analyzing bioactive phenols in olive oil.
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9

Rosales, Antonio, and Ignacio Rodríguez-García. "Cp2TiCl/D2O/Mn, a formidable reagent for the deuteration of organic compounds." Beilstein Journal of Organic Chemistry 12 (July 25, 2016): 1585–89. http://dx.doi.org/10.3762/bjoc.12.154.

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Cp2TiCl/D2O/Mn is an efficient combination, sustainable and cheap reagent that mediates the D-atom transfer from D2O to different functional groups and can contribute to the synthesis of new deuterated organic compounds under friendly experimental conditions and with great economic advantages.
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10

Castro Rodríguez, María, Ignacio Rodríguez García, Roman Nicolay Rodríguez Maecker, Laura Pozo Morales, J. Enrique Oltra, and Antonio Rosales Martínez. "Cp2TiCl: An Ideal Reagent for Green Chemistry?" Organic Process Research & Development 21, no. 7 (June 22, 2017): 911–23. http://dx.doi.org/10.1021/acs.oprd.7b00098.

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Дисертації з теми "Cp2TiCl"

1

Khan, Hina Parveen Afzal. "A Mitsunobu-Michael Reaction Sequence to N-Heterocyclic Variants and Ti(III)-Mediated Synthesis of Terpenoids and N-Fused Indoles." Thesis, 2019. https://etd.iisc.ac.in/handle/2005/4382.

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The research work delineates a flexible and novel route for the diastereoselective construction of diversely substituted N-heterocyclic variants as valuable scaffolds for natural products and pharmaceuticals, starting from an easily accessible prochiral α-phenyl-β-enamino ester. By taking advantage of the Cp2TiCl-mediated reductive epoxide opening-cyclization, an expedient and unified approach has been accomplished to gain access to a handful of iridoid monoterpenes in an enantiomerically divergent manner starting from (+)-β-citronellene. Also, a radical approach to build oxa-quaternary centers, structural feature of various natural-products-inspired synthons have been undertaken via Cp2TiCl-mediated reductive epoxide opening-cyclization protocol. Furthermore, the feasibility of Cp2TiCl-promoted radical cyclization has also been explored onto N-tethered epoxy indoles which provide an efficient route for the construction of pyrrolo/piperidino[1,2-a]indole derivatives.
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2

Lin, Yuan Teng, and 林元登. "One-Pot Synthesis of PSt-b-PCL Mediated by Cp2TiCl2." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/60939327431308542680.

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碩士
國立清華大學
化學系
103
We demonstrated one-pot synthesis of polystyrene-b-polycaprolactone (PSt-b-PCL) mediated by Cp2TiCl2. First we optimized styrene radical polymerization mediated by Cp2TiCl2 and tuned many factors of polymerization such as benzaldehyde, Cp¬2TiCl2, nano-sized zinc. We observed lower concentration benzaldehyde led to better polymerization control, nano-sized zinc not only acted a role of reducing agent, but had relationship with polymerization control, more Cp¬2TiCl2 afforded lower polymer molecule weight. Based on optimized styrene polymerization, we successfully synthesized blockcopolymer of styrene (St) and-caprolactone (CL). According the GPC results, the polymerization was initiated with good living characteristics demonstrated by linear increasing in molecular weight with time. In second part, we used cyclic voltammetry (CV) and polymerization results to discuss the relationship between redox ability of various cobalt complexes (CoII(TMP), CoII(acac)2, CoII(etsalen), CoII(etsalentBu), CoII(Salen*) and CoII (Salophen)) and cobalt-mediated radical polymerization (CMRP) of methyacrylate MA. We found CoII(Salophen) had low redox ability and also proivded worse MA polymerization, in addition, CoII(TMP) had high redox ability and showed better polymerization. It seems that cobalt complexes having high redox bility can afford better MA polymerization.
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Частини книг з теми "Cp2TiCl"

1

Asandei, Alexandru D., Christopher P. Simpson, Hyun S. Yu, Olumide I. Adebolu, Gobinda Saha, and Yanhui Chen. "Cp2TiCl-Mediated Controlled Radical Polymerization of Isoprene Initiated by Epoxide Radical Ring Opening." In ACS Symposium Series, 149–63. Washington, DC: American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1024.ch010.

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2

Pardasani, R. T., and P. Pardasani. "Effective magnetic moment of (Cp2Ti)2AlH4Cl." In Magnetic Properties of Paramagnetic Compounds, 25. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23675-4_12.

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Тези доповідей конференцій з теми "Cp2TiCl"

1

Shaibakova, Mariya G., Nikita A. Rikhter, Leisan K. Dilmukhametova, and Ilfir R. Ramazanov. "Multiple Pathways in Cp2TiCl2—Catalyzed Reaction of Tetraalkyl-Substituted Pyrazines with EtAlCl2 and Mg." In International Electronic Conference on Synthetic Organic Chemistry. Basel Switzerland: MDPI, 2022. http://dx.doi.org/10.3390/ecsoc-26-13709.

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2

Dilmukhametova, Liaisan K., Mariya G. Shaibakova, and Ilfir R. Ramazanov. "Cp2TiCl2—Catalyzed Synthesis of Tertiary Alcohols by the Reaction of AlCl3 with Ketones and Aryl Olefins." In International Electronic Conference on Synthetic Organic Chemistry. Basel Switzerland: MDPI, 2022. http://dx.doi.org/10.3390/ecsoc-26-13706.

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