Results 211 to 220 of about 26,404 (254)

A 1,2,3-thiadiazole–1,2,3-thiadiazole rearrangement

J. Chem. Soc., Chem. Commun., 1983
During its preparation, 4-ethoxycarbonyl-5-diazomethyl-1,2,3-thiadiazole (4), undergoes a ring transformation into the isomeric structure (5), but when the ester function in (4) is replaced by a phenyl group, no isomerization is observed.
Gerrit L'abbé, Jean-Paul Dekerk, Martine Deketele   +2 more
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1,2,3‐Thiadiazoles

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
D. J. Wilkins, P. A. Bradley
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The 1,2,5-Thiadiazoles

1968
Publisher Summary This chapter presents the review of organic and physical chemistry of monocyclic 1, 2, 5-thiadiazoles up to the early part of 1967. Reference is made to the 2, 1, 3-benzothiadiazoles and related compounds only as they contribute to the chemistry of the basic ring system. The 1, 2, 5-thiadiazole nucleus is numbered as in 4.
L M, Weinstock, P I, Pollak
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Thiadiazoles

Heterocycles containing nitrogen, oxygen and sulfur have been under investigation for a long time because of their important medicinal properties. The literature survey has described that thiadiazole moieties serve as analgesic, anti-inflammatory, anti-microbial activities, antihypertensive,anticancer, antituberculosis and vasodilator and this ...
G. Nagendra, D. N. Akshitha, H. S. Lalithamba, G. K. Prashanth   +3 more
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1,3,4‐Thiadiazoles

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Liquid crystalline thiadiazole derivatives: new ferroelectric thiadiazole derivatives

Liquid Crystals, 2002
A series of optically active thiadiazole Schiff's bases were prepared and their liquid crystalline properties were studied. Chirality was achieved by introducing an asymmetric carbon atom into the alkoxy group. Thus, 2-(p -active-alkoxyphenyl-imine)-5-(p-n-alkoxy)phenyl-1,3,4-thiadiazoles were synthesized.
Yan Xu, Baolong Li, Huibiao Liu, Zijian Guo, Zihou Tai, Zheng Xu   +5 more
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Alkynylated Aceno[2,1,3]thiadiazoles

Organic Letters, 2009
Enlarged acenothiadiazoles, which are easily prepared, display attractive optical and electrochemical properties. The annulation of thiadiazole to anthracene gives a stable material with optical properties similar to those of substituted pentacenes.
Anthony Lucas, Appleton, Shaobin, Miao, Scott M, Brombosz, Nancy J, Berger, Stephen, Barlow, Seth R, Marder, Brian M, Lawrence, Kenneth I, Hardcastle, Uwe H F, Bunz   +8 more
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Thiadiazole-Derived Expanded Heteroazaporphyrinoids

Organic Letters, 2001
[structure: see text] Heteroannulenes 1 and 3 containing three subunits of isoindole or pyrrole, respectively, three 1,3,4-thiadiazole moieties, and six aza-bridges have been synthesized by reaction of the corresponding diiminoisoindoline or diiminopyrroline with 2,5-diamino-1,3,4-thiadiazole.
M K, Islyaikin, E A, Danilova, L D, Yagodarova, M S, Rodríguez-Morgade, T, Torres   +4 more
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1,2,4-Thiadiazole

2015
[288-92-6] C2H2N2S (MW 86.11) InChI = 1S/C2H2N2S/c1-3-2-5-4-1/h1-2H InChIKey = YGTAZGSLCXNBQL-UHFFFAOYSA-N (prepared from 5-bromo-1,2,4-thiadiazole) Alternate Name(s): 1-thia-2,4-diazacyclopentadiene; 2,4-diazathiophene. Physical Data: mp −33 to −35 °C, bp753 120.7–121.2 °C, d 1.3298 g mL−1 at 20 °C, 1.5316; λmax 229 nm ...
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ChemInform Abstract: A 1,2,3‐THIADIAZOLE‐1,2,3‐THIADIAZOLE REARRANGEMENT

Chemischer Informationsdienst, 1983
AbstractAus den Thiadiazolen (I) und (IV) entstehen unter Umlagerung die Diazoverbindungen (II) bzw. (V).
G. L'ABBE, J.‐P. DEKERK, M. DEKETELE
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