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Of them, 1,3,4-thiadiazole is the most common, appearing in such medications as cephazolin and acetazolamide. [ 1 ] [ 2 ] [ 3 ] In the Hurd-Mori reaction , an acyl hydrazone reacts with thionyl chloride or selenium dioxide to give a 1‑thia- or 1‑selena-2,3‑diazole.
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2,1,3-Benzothiadiazole has been of interest as a redox-active organic component in flow batteries owing to its favourable solubility, low reduction potential and fast electrochemical kinetics. [ 15 ] Such properties in derivatives containing this heterocycle have made it of growing interest in dyestuffs , [ 16 ] white light-emitting polymers ...
Thiazole (/ ˈ θ aɪ. ə z oʊ l /), or 1,3-thiazole, is a 5-membered heterocyclic compound that contains both sulfur and nitrogen. The term 'thiazole' also refers to a large family of derivatives. The term 'thiazole' also refers to a large family of derivatives.
1,3-Dithia-2,5-diazolium salts, which lack the S–S bond, are less common than the 1,2,3,5 isomer. The neutral 1,3-dithia-2,5-diazoles are even rarer. The synthesis of these salts involves addition of dithionitronium hexafluoroarsenate ([SNS] + [AsF 6] −) to a nitrile. The conversion is an example of a 1,3-Dipolar cycloaddition. [4]: 195–200
1,2,3-benzothiadiazole is much less nucleophilic than naphthalene. Nitration is slow. [8] For that reason, many of its simple derivatives have been made from 2-aminothiophenols already having additional substituents. [7] 1,2,3-benzothiadiazole is a very weak base and alkylation reactions give exclusively the 3-amino quaternary salt. [9]
operation [1]. Of those there are eight in the United States (US) [2]. In 2003 the EPA reported in the Federal Register that on average approximately seven tons of mercury were missing from each plant in the year 2000 [3]. These chlor-alkali plants have an average of fifty-six cells, each containing as much as 8,000 pounds of mercury [4] and,
The molecular formula C 6 H 4 N 2 S may refer to: 1,2,3-Benzothiadiazole, a benzene ring that is fused to a 1,2,3-thiadiazole; 2,1,3-Benzothiadiazole, a benzene ring that is fused to a 1,2,5-thiadiazole