Results 171 to 180 of about 8,042 (202)

Kristallin‐flüssige 1,3,4‐Thiadiazole. I. Biphenyl‐ und terphenylanaloge 1,3,4‐Thiadiazole

Journal für Praktische Chemie, 1980
Liquid 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, J. Hauschild, H. Zaschke, H. Schubert   +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, 1982
Some 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, Gian Carlo Franchini, Giorgio Peyronel   +2 more
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1,3,4‐Thiadiazoles

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
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1,3,4-THIADIAZOLES FROM THIOSEMICARBAZIDES

Phosphorus, Sulfur, and Silicon and the Related Elements, 1991
Abstract 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, Daniel L. Klayman, Judith L. Flippen-anderson, Richard Gilardi   +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, 1966
Abstract 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, L. Nygaard, E.J. Pedersen, J. Rastrup-Andersen   +3 more
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Synthesis of Several Mesoionic 1,3,4-Thiadiazoles

Journal of Pharmaceutical Sciences, 1965
Several 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, 2016
In 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, 1975
Mesoionic 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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Synthese von 1,3,4‐Thiadiazol‐derivaten

Journal für Praktische Chemie, 1991
Synthesis of 1,3,4‐Thiadiazol Derivatives.
C. Tschierske, D. Girdziunaite
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Aromatic Poly‐1,3,4‐Thiadiazole Fibers

Journal of Polymer Science Part C: Polymer Symposia, 1967
AbstractIt has been shown that aromatic poly‐1,3,4‐thiadiazole fibers can be prepared in a manner analogous to that of the aromatic poly‐1,3,4‐oxadiazole via the thermal cyclode‐hydration of an aromatic polyoxathiahydrazide fiber. These fibers exhibited the same high level of thermal and hydrolytic stability observed for the aromatic poly‐1,3,4 ...
A. H. Frazer, W. P. Fitzgerald
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