Results 171 to 180 of about 15,802 (202)

2-Amino-5-methyl-1,3,4-thiadiazole and 2-amino-5-ethyl-1,3,4-thiadiazole

Acta Crystallographica Section C Crystal Structure Communications, 2001
The structures of 2-amino-5-methyl-1,3,4-thiadiazole, C(3)H(5)N(3)S, and 2-amino-5-ethyl-1,3,4-thiadiazole, C(4)H(7)N(3)S, have been determined for comparison with unsubstituted 2-amino-1,3,4-thiadiazole. Despite their different space groups (P2(1)/n and Pbca, respectively), the packing modes of the methyl and ethyl derivatives are similar, with ...
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Synthesis of 1,3,4‐Thiadiazoles from Aldehyde Hydrazones.

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Kentaro Okuma, Kazuko Nagakura, Yasutaka Nakajima, Kento Kubo, Kosei Shioji   +4 more
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New Cyclizing Reagent for the Synthesis of 1,3,4-Thiadiazoles

Synthesis, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Vladimir N. Yarovenko, Aleksandr V. Shirokov, Igor V. Zavarzin, Oksana N. Krupinova, Anatolii V. Ignatenko, Mikhail M. Krayushkin   +5 more
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Synthesis of Substituted 1,2,4-Triazoles and 1,3,4-Thiadiazoles

Chemistry of Heterocyclic Compounds, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
T. R. Hovsepian, E. R. Dilanian, A. P. Engoyan, R. G. Melik‐Ohanjanian   +3 more
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Recent Advances in the Chemistry of 1,3,4-Thiadiazoles

1968
Publisher Summary This chapter discusses homologs, functional groups, physical properties, and the uses of 1, 3, 4-thiadiazole. The development of 1, 3, 5- thiadiazole chemistry is linked to the discovery of phenylhydrazine and hydrazine. The numbering of the 1, 3, 4-thiadiazole ring follows from 1.
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A new synthesis of symmetrical 2,5‐diaryl‐1,3,4‐thiadiazoles

Journal of Heterocyclic Chemistry, 1983
AbstractTreatment of aromatic aldehydes with sulfur and hydrazine hydrate in the ratio 1:2:3, respectively, under the Willgerodt conditions affords the title compounds in excellent yields and in a good state of purity. Under the same conditions 2‐chloro and 2,6‐dichlorobenzaldehyde yield 3H‐1,2‐benzodithiole‐3‐thione and bis‐(2,6‐dichlorobenzyl ...
G. Mazzone, PUGLISI, Giovanni, F. Bonina, A. Corsaro   +3 more
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ChemInform Abstract: Utilization of 2‐Halo‐1,3,4‐thiadiazoles in the Synthesis of 2‐Functionalized 1,3,4‐Thiadiazole Derivatives.

ChemInform, 2011
AbstractNovel 2‐halo‐5‐aryloxymethyl‐thiadiazoles (II) are prepared by diazotization of aminothiadiazoles (I) in the presence of an acid‐catalyst under copper‐free conditions.
Xi‐Cun Wang, Jin‐Ge Luo, Xiao‐Mei Ding, Zheng‐Jun Quan   +3 more
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Azodicarboxylates: valuable reagents for the multicomponent synthesis of novel 1,3,4-thiadiazoles and imidazo[2,1-b][1,3,4]thiadiazoles

Tetrahedron, 2013
Abstract Upon reaction of 4,5-disubstituted-N-arylaminoimidazole-2-thiones with isocyanides in the presence of azodicarboxylates (1.2 equiv) at rt, the imidazo[2,1-b][1,3,4]thiadiazoles were formed as the only reaction products in very good yields, whereas by using higher reaction temperatures, along with the imidazo[2,1-b][1,3,4]thiadiazoles, the ...
Zarganes-Tzitzikas, T., Neochoritis, C. G., Stephanidou-Stephanatou, J., Tsoleridis, C. A., Buth, G., Kostakis, G. E.   +5 more
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1,3,4-Thiadiazoles

2022
Jürgen Schatz, Kemal Gogić, Tobias Benkert   +2 more
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1,3,4-Thiadiazoles

2008
P.A. Koutentis, C.P. Constantinides
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