1010 S. Mataka, К. Takahashi, Y. Yamada, and M. Tashiro Vol. 16 the carboxylic acid (11) to give the known 3-phenyl-1,2,5- thiadiazole (3d) (6), which is a product of the reaction of 1 with 2d. И The structure 4b was confirmed as methyl 5-phenyl- l,2,4-thiadiazole-3-carboxylate by the treatment of 4b with concentrated ammonia to give the corresponding carbox- amide (12) (7). Compound 10 was determined to be methyl „Л 5-phenyl-l,2,3-thiadiazole-4- ...
