Relevant bibliographies by topics / 4-d]pyridazine

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  2. Conference papers

Academic literature on the topic '4-d]pyridazine'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "4-d]pyridazine"

1

Deeb, Ali, Besher Bayoumy, Fathy Yasine, and Rida Fikry. "Pyridazine Derivatives and Related Compounds, Part 4. Pyrrolo[2,3-c]pyridazines and Furo[2,3-c]pyndazines, Synthesis and Some Reactions." Zeitschrift für Naturforschung B 47, no. 3 (March 1, 1992): 418–23. http://dx.doi.org/10.1515/znb-1992-0320.

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Ethyl 5-amino-3,4-diphenyl-7H-pyrrolo[2,3-c]pyridazine-6-carboxylate (1), ethyl 5-aminofuro[ 2,3-c]pyridazine-6-carboxylate (2) and 5-aminofuro[2,3-c]pyridazine-6-carboxamide (3), are obtained from 4-cyano-5,6-diphenyl-3(2H)-pyridazinone. 5-Acetamido and 5-chloroacetamido derivatives prepared from 1, undergo cyclization on heating to form 2-substituted pyridazino[4',3':4,5]pyrrolo[3,2-d]oxazin-4(5H)-one (5a, b). The reaction of 1 and 2 with hydrazine gave 6-carbohydrazide derivatives (7 a, b). Compound 3 undergoes condensation with acetyl chloride, chloroacetyl chloride, benzoyl chloride, formamide and carbon disulphide to furnish the corresponding pyrimido[4',5' :4,5]furo[2,3-c]pyridazin-4(3 H)-one derivatives. The reaction of 1 with o-aminophenol gave 3,4-diphenyl-11-oxo-10,11-dihydro-12H -pyridazino[ 4',3' :4,5]pyrrolo[3,2-b][1,5]benzoxazepine.
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2

Chmovzh, Knyazeva, mlv@ioc ac ru Tanaka, Popov, Mikhalchenko, Robertson, and Rakitin. "[1,2,5]Thiadiazolo[3,4-d]Pyridazine as an Internal Acceptor in the D-A-π-A Organic Sensitizers for Dye-Sensitized Solar Cells." Molecules 24, no. 8 (April 22, 2019): 1588. http://dx.doi.org/10.3390/molecules24081588.

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Four new D-A-π-A metal-free organic sensitizers for dye-sensitized solar cells (DSSCs), with [1,2,5]thiadiazolo[3 ,4-d]pyridazine as internal acceptor, thiophene unit as π-spacer and cyanoacrylate as anchoring electron acceptor, have been synthesized. The donor moiety was introduced into [1,2,5]thiadiazolo[3,4-d]pyridazine by nucleophilic aromatic substitution and Suzuki cross-coupling reactions, allowing design of D-A-π-A sensitizers with the donor attached to the internal heterocyclic acceptor not only by the carbon atom, as it is in a majority of DSSCs, but by the nitrogen atom also. Although low values of power conversion efficiency (PCE) were found, a few important consequences were identified: (i) poor PCE data can be attributed to high electron deficiency of the internal [1,2,5]thiadiazolo[3,4-d]pyridazine acceptor due to lower light harvesting by the dye; (ii) the manner in which the donor was attached to the internal acceptor (by carbon or nitrogen) did not play an essential role in the photovoltaic properties of the dyes; (iii) dyes based on the novel donor 2,3,4,4a,9,9a-hexahydro-1H-1,4-methanocarbazolyl and 9-(p-tolyl)-2,3,4,4a,9,9a-hexahydro-1H- carbazole moieties showed similar photovoltaic properties to dyes based on the well-known 4-(p-tolyl)-1,2,3,3a,4,8b-hexahydrocyclopenta[b]indolyl building block, which opens the door for further optimization potential of new dye families.
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Richter, Marianne, and Gunther Seitz. "4-(β-D-Ribofuranosyl)pyridazine: Neue C-Nukleoside durch [4+2]-Cycloaddition mit inversem Elektronenbedarf." Archiv der Pharmazie 327, no. 6 (1994): 365–70. http://dx.doi.org/10.1002/ardp.19943270604.

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4

Bussolari, Jacqueline C., Johanna D. Stoeckler, and Raymond P. Panzica. "The synthesis and biological evaluation of 4-p-nitrobenzylthio-v-triazolo [4,5-d]pyridazine and imidazo[4,5-d]pyridazine ribosides as potential nucleoside transport inhibitors." Bioorganic & Medicinal Chemistry 4, no. 10 (October 1996): 1725–31. http://dx.doi.org/10.1016/0968-0896(96)00188-5.

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5

Ramesh, Kakarla, and Raymond Panzica. "Synthesis and Biological Activity of Certain 4-Substituted Imidazo[4,5-d]Pyridazine Nucleosides." Nucleosides, Nucleotides and Nucleic Acids 8, no. 5 (1989): 1141–42. http://dx.doi.org/10.1080/07328318908054311.

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6

Filali, Mouad, Nada Kheira Sebbar, Tuncer Hökelek, Joel T. Mague, Said Chakroune, Abdessalam Ben-Tama, and El Mestafa El Hadrami. "Crystal structure, Hirshfeld surface analysis and interaction energy and DFT studies of 4-[(prop-2-en-1-yloxy)methyl]-3,6-bis(pyridin-2-yl)pyridazine." Acta Crystallographica Section E Crystallographic Communications 75, no. 9 (August 20, 2019): 1321–26. http://dx.doi.org/10.1107/s2056989019011186.

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The title compound, C18H16N4O, consists of a 3,6-bis(pyridin-2-yl)pyridazine moiety linked to a 4-[(prop-2-en-1-yloxy)methyl] group. The pyridine-2-yl rings are oriented at a dihedral angle of 17.34 (4)° and are rotated slightly out of the plane of the pyridazine ring. In the crystal, C—HPyrd...NPyrdz (Pyrd = pyridine and Pyrdz = pyridazine) hydrogen bonds and C—HPrpoxy...π (Prpoxy = prop-2-en-1-yloxy) interactions link the molecules, forming deeply corrugated layers approximately parallel to the bc plane and stacked along the a-axis direction. Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are from H...H (48.5%), H...C/C...H (26.0%) and H...N/N...H (17.1%) contacts, hydrogen bonding and van der Waals interactions being the dominant interactions in the crystal packing. Computational chemistry indicates that in the crystal, the C—HPyrd...NPyrdz hydrogen-bond energy is 64.3 kJ mol−1. Density functional theory (DFT) optimized structures at the B3LYP/6–311 G(d,p) level are compared with the experimentally determined molecular structure in the solid state. The HOMO–LUMO behaviour was elucidated to determine the energy gap.
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7

Chmovzh, Timofey N., and Oleg A. Rakitin. "7-Bromo-[1,2,5]selenadiazolo[3,4-d]pyridazin-4(5H)-one." Molbank 2021, no. 2 (June 5, 2021): M1229. http://dx.doi.org/10.3390/m1229.

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New heterocyclic systems containing 1,2,5-chalcogenadiazoles are of great interest for the creation of organic photovoltaic materials and biologically active compounds. In this communication, 3,6-dibromopyridazine-4,5-diamine was investigated in reaction with selenium dioxide in order to obtain 4,7-dibromo-[1,2,5]selenadiazolo[3,4-d]pyridazine. We found that 7-bromo-[1,2,5]selenadiazolo[3,4-d]pyridazin-4(5H)-one, the first representative of the new heterocyclic system, was isolated as a hydrolysis product of the corresponding 4,7-dibromoderivative. The structure of the newly synthesized compound was established by means of elemental analysis, high-resolution mass spectrometry, 1H, 13C NMR, IR and UV spectroscopy, and mass spectrometry.
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8

Patra, Gopal Chandra, Sankar Chandra Bhunia, Monoj Kumar Roy, and Sudhir Chandra Pal. "Synthesis of 4-Aryl-4,6-dihydropyrimido[4,5-d]pyridazine-2,5(1H,3H)-diones fromBiginelliCompounds." Helvetica Chimica Acta 96, no. 1 (January 2013): 130–34. http://dx.doi.org/10.1002/hlca.201200109.

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9

Chen, Shi-Quan, Kai Jiang, and Shi-Fan Wang. "Ethyl 3-methyl-4-oxo-4,5-dihydro-1H-pyrrolo[2,3-d]pyridazine-2-carboxylate." Acta Crystallographica Section E Structure Reports Online 66, no. 2 (January 9, 2010): o259. http://dx.doi.org/10.1107/s1600536809055081.

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10

OISHI, ETSUO, HIDEKI MATSUBARA, and EISAKU HAYASHI. "Condensed Pyridazines. III. Reaction of 4, 7-Dichloro-1-phenyl-1H-pyrazolo [3, 4-d] pyridazine with Carbanions." YAKUGAKU ZASSHI 105, no. 2 (1985): 119–28. http://dx.doi.org/10.1248/yakushi1947.105.2_119.

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Conference papers on the topic "4-d]pyridazine"

1

Hosmane, Ramachandra, and Huan-Ming Chen. "Synthesis of 1-(2'-Deoxy-γ-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine-4,7(5 H,6H)-dion: a Potentially Beneficial Building Block for Antisense Applications." In The 4th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2000. http://dx.doi.org/10.3390/ecsoc-4-01926.

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Hosmane, Ramachandra, and Huan-Ming Chen. "Synthesis of 1-(2'-O-Methyl-γ -D-Ribofuranosyl)-1H-imidazo[4,5-d]pyridazine-4,7(5H,6H)-dion: an Attractive Building Block for Antisense and Triple-helical Applications." In The 4th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2000. http://dx.doi.org/10.3390/ecsoc-4-01925.

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You might also be interested in the extended bibliographies on the topic '4-d]pyridazine' for particular source types:
Journal articles
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