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Benzoxazol-2 (3H)-one and 1,3,4-oxadiazol-2(3H) -one derivatives from substituted enaminones and ketoenamines

✍ Scribed by M. Forchiassin; G. Pitacco; A. Risaliti; C. Russo; E. Valentin

Book ID
112127036
Publisher
Journal of Heterocyclic Chemistry
Year
1983
Tongue
English
Weight
340 KB
Volume
20
Category
Article
ISSN
0022-152X

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## Abstract 3‐(2‐alkenoyl)‐thiocarbazic acid O‐methyl esters **1** are desulfurated by bromine and the unknown intermediates are transformed by alkali to 5‐(1‐alkenyl)‐1, 3, 4‐oxadiazol‐2(3__H__)‐ones (**2**). This type of oxadiazolone substitution is not realizable by the common ring closure of hy