Results 171 to 180 of about 8,060 (204)
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Tetrahedron, 1968
Abstract Some 2-aryl-5-chloro-1,3,4-thiadiazoles (I; X = Cl) were treated with several nucleophilic agents in different solvents. Displacement of chlorine by piperidine was chosen for a kinetic study in ethanol and in benzene, in the temperature range 30–60°.
A. Alemagna, T. Bacchetti, P. Beltrame
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Abstract Some 2-aryl-5-chloro-1,3,4-thiadiazoles (I; X = Cl) were treated with several nucleophilic agents in different solvents. Displacement of chlorine by piperidine was chosen for a kinetic study in ethanol and in benzene, in the temperature range 30–60°.
A. Alemagna, T. Bacchetti, P. Beltrame
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Synthesis of 1,3,4-thiadiazole oligomers
Journal of the Chemical Society, Perkin Transactions 1, 2002AbstractFor Abstract see ChemInform Abstract in Full Text.
Van‐Duc Le +2 more
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Kristallin‐flüssige 1,3,4‐Thiadiazole. I. Biphenyl‐ und terphenylanaloge 1,3,4‐Thiadiazole
Journal für Praktische Chemie, 1980Liquid Crystalline 1,3,4‐Thiadiazoles. I. Biphenyl‐ and Terphenyl Analogous 1,3,4‐ThiadiazolesThe synthesis of disubstituted 1,3,4‐ and 1,2,4‐thiadiazoles and 1,3,4‐oxadiazoles is described and their melting and clearing points are investigated. The influence of the heterocyclic ring system on the formation of crystalline liquid phases is discussed.
K. Dimitrowa +3 more
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Copper(II) complexes of 2-amino-1,3,4-thiadiazole and 2-ethylamino-1,3,4-thiadiazole
Transition Metal Chemistry, 1982Some copper(II) complexes of 2-amino-1,3,4-thiadiazole (atz) and 2-ethylamino-1,3,4-thiadiazole (eatz) have been prepared and studied by electronic, i.r. and e.p.r. spectra and by magnetochemical and conductometric methods. The CuX2 · atz (X=Cl, Br) and CuCl2 · eatz complexes are presumably six-coordinate with bridging ligand molecules and ...
Antonio C. Fabretti +2 more
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1,3,4-THIADIAZOLES FROM THIOSEMICARBAZIDES
Phosphorus, Sulfur, and Silicon and the Related Elements, 1991Abstract A new method for the synthesis of 1,3,4-thiadiazoles is described. Thus condensation of 4-methyl-4phenyl-3-thiosemicarbazide with an aldehyde or ketone affords 1,1-disubstituted-6-[1-(arylethylidine) amino] −2,5-dithiobiureas, rather than the anticipated 4,4-disubstituted-3-thiosemicarbazones.
John P. Scovill +3 more
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Microwave spectra of isotopic 1,3,4-thiadiazoles. Molecular structure of 1,3,4-thiadiazole
Journal of Molecular Spectroscopy, 1966Abstract The microwave spectra of 2-D-, 2-13C-, and 3-15N-1,3,4-thiadiazole, C2H2N2S, were assigned and combined with earlier measurements to give a substitution structure of 1,3,4-thiadiazole. The molecule is planar with the following structural parameters: S,C=1.721A C,N=1.302A N,N=1.371A C,H=1.077A The result is ...
B. Bak +3 more
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Synthesis of Several Mesoionic 1,3,4-Thiadiazoles
Journal of Pharmaceutical Sciences, 1965Several mesoionic 1,3,4-thiadiazoles, more properly termed anhydro-4-phenyl-5-substituted-2-thio-1-thia-3,4-diazolinium thiols, have been synthesized. Physical constants for the compounds have been determined and recorded. Preliminary screening against selected microorganisms indicated some useful inhibitory activity in vitro .
T G, Stewart, L B, Kier
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1,3,4-Thiadiazole Based Anticancer Agents
Anti-Cancer Agents in Medicinal Chemistry, 2016In recent years, researchers like medicinal chemists in the field of medicinal chemistry have widely utilized the 1,3,4-thiadiazole nucleus to investigate its biological and pharmacological effects. This heterocyclic structure has demonstrated various bioactivities such as antifungal, antimicrobial, antiviral, antileishmanial, anti-inflammatory ...
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Mesoionic 2-acylimino-1,3,4-thiadiazoles
Chemistry of Heterocyclic Compounds, 1975Mesoionic 2-carbamoylimino-, 2-thiocarbamoylimino-, and 2-methacryloylmnno-1,3,4-thiadiazoles were obtained by reaction of α-alkylthioacylhydrazines with the appropriate acyl isothiocyanates. Mesoionic 1,3,4-thiadiazole-2-thione is also formed in the reaction with diethylthiocarbamoyl isothiocyanate.
A. Ya. Lazaris, A. N. Egorochkin
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