Results 91 to 100 of about 15,802 (202)

Síntese de cristais líquidos isônicos e/ou discóticos contendo os heterociclos 1,2,4- E 1,3,4- oxadiazol [PDF]

, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2013.A presente dissertacao traz o estudo realizado com moleculas derivadas dos heterociclos 1,
Silva, Danilo Henrique da
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Regioselective Synthesis of 2‑Amino-Substituted 1,3,4-Oxadiazole and 1,3,4-Thiadiazole Derivatives via Reagent-Based Cyclization of Thiosemicarbazide Intermediate [PDF]

, 2016
A regioselective, reagent-based method for the cyclization reaction of 2-amino-1,3,4-oxadiazole and 2-amino-1,3,4-thiadiazole core skeletons is described. The thiosemicarbazide intermediate 3 was reacted with EDC·HCl in DMSO or p-TsCl, triethylamine in N-
Seung-Ju Yang (1463140), Young-Dae Gong (1463149), Hyun-Jung Kwak (2001277), Seok-Hyeong Lee (2001280)   +3 more
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Synthesis, diuretic activity research and QSAR-analysis of N-(1,3,4-tiadiazol-2-il)substituted amides of alkanecarboxylic acids

Фармацевтичний журнал, 2019
Diuretics are effective drugs that are widely used in medicine, but have unwanted side effects. The derivative of thiadiazole – acetozolamide is a known diuretic.
І. V. Drapak
doaj   +1 more source

6-(3-Chlorophenyl)imidazo[2,1-b][1,3,4]thiadiazole [PDF]

, 2013
In the title compound, C10H8ClN3S, the dihedral angle between the mean planes of the benzene and imidazo[2,1-b][1,3,4]thiadiazole rings is 6.0 (9)°.
Praveen, A. S., Shannon T. Krauss, A.S. Praveen, Krauss, Shannon T., Jerry P. Jasinski, H. S. Yathirajan, B. Narayana, Jasinski, Jerry P., Narayana, B., Yathirajan, H. S.   +9 more
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Synthesis of Schiff Bases of 2-amino-5-aryl-1,3,4-thiadiazole and Its Analgesic, Anti-Inflammatory and Anti-Bacterial Activity

E-Journal of Chemistry, 2012
Schiff Bases of 2-amino-5-aryl-1,3,4-thiadiazole derivatives have been synthesized with different aromatic aldehyde. 1,3,4-thiadiazole derivatives were prepared by the reaction of thiosemicarbazide, sodium acetate and aromatic aldehyde. The structures of
Alok Pandey, R. Rajavel, Sandeep Chandraker, Deepak Dash   +3 more
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2,5-Bis[(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)sulfanyl]-1,3,4-thiadiazole [PDF]

, 2017
The title compound, C18H8F26N2S3, was obtained by double S-perfluorohexylethylation of dipotassium 1,3,4-thiadiazole-2,5-dithiolate in methanol. The molecule exhibits twofold rotational symmetry, with the S atom lying on the rotation axis.
Gerhard Laus, Thomas Müller, Holger Kopacka, Herwig Schottenberger, Hubert Huppertz, Gabriel Partl, Klaus Wurst   +6 more
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Synthesis and Characterization of Some New Thiazine , Azetidine and Thiazolidine Compounds Containing 1,3,4Thiadiazole Moiety And Their Antibacterial Study

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
     2-amino-5-mercapto-1,3,4-thiadiazole [I] were prepared by the cyclization of thiosemecarbazide with carbon disulphide and anhydrous  sodium carbonate in ethanol as a solvent.
Ali H. Samir, Khalid F. Ali, Ruwaidah S. Saeed   +2 more
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Interplay of Inter- and Intramolecular Interactions in Crystal Structures of 1,3,4-Thiadiazole Resorcinol Derivatives [PDF]

, 2018
Five new 1,3,4-thiadiazole derivatives have been synthesized, and their crystal structures have been determined by single crystal X-ray diffraction. The influence of substituents on molecular geometry and the three-dimensional arrangement of molecules ...
Daniel M. Kamiński (2280082), Arkadiusz Matwijczuk (1491682), Mariusz Gagoś (1491673), Krzysztof Woźniak (1440874), Andrzej Niewiadomy (1491667), Anna A. Hoser (1556770), Alicja Skrzypek (5427140)   +6 more
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A one-dimensional cadmium(II) complex supported by a sulfur–nitrogen mixed-donor ligand

Acta Crystallographica Section E, 2009
In the title compound, catena-poly[cadmium(II)-bis(μ-5-amino-1,3,4-thiadiazole-2-thiolato)-κ2N3:S2;κ2S2:N3], [Cd(C2H2N3S2)2]n, the CdII ion is coordinated by two N atoms of the 1,3,4-thiadiazole rings from two ligands and two S
Qian Gao, Chao-Yan Zhang, Yue Cui, Ya-Bo Xie   +3 more
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Synthesis and Regioselective Reaction of Some Unsymmetrical Heterocyclic Chalcone Derivatives and Spiro Heterocyclic Compounds as Antibacterial Agents

Molecules, 2015
A number of novel heterocyclic chalcone derivatives can be synthesized by thermal and microwave tools. Treatment of 4-(4-Acetylamino- and/or 4-bromo-phenyl)-4-oxobut-2-enoic acids with hydrogen peroxide in alkaline medium were afforded oxirane ...
Maher A. El-Hashash, Sameh A. Rizk, Saad R. Atta-Allah   +2 more
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