Synthesis of Heterocycles. Part II. New Routes to Acetylthiadiazolines and Alkylazothiazoles
Methylglyoxalyl chloride arylhydrazones (III) react with an ethanolic solution of thiourea to give 2-amino-4-methyl-5-arylazothiazoles (XII) instead of the expected 2-acetyl-4-aryl-5-imino-Δ2-1,3,4-thiadiazolines (V) which were obtained from II
Eweiss, N.F.,Osman, A.
p. 1713 - 1717
(2007/10/02)
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