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ChemInform Abstract: Chemoselective Heterocyclization of 2-Aryl-3-(3-(2,4-dimethylphenyl) thioureido)-1,3-thiazolidin-4-ones to 5H-(1,3)Thiazolo(4,3-b)-1,3,4- oxa(thia)diazoles and 1,5-Dihydro(1,3)thiazolo(3,4-b)-1,2,4-triazoles.

✍ Scribed by R. H. KHAN; R. K. MATHUR; A. C. GHOSH

Book ID: 112041960
Publisher: John Wiley and Sons
Year: 2010
Weight: 30 KB
Volume: 27
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199652064

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## Abstract 3‐Methyl‐2‐benzofurancarboxylic acid hydrazide (**2**) reacts with carbon disulfide and pota‐ ssium hydroxide to give the corresponding potassium carbodithioate salt **3**. Treatment of the latter salt with hydrochloric acid, hydrazine hydrate, and with phen‐ acyl bromide afforded the c