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Mass spectra of imidazo[2,1-b]thiazole and thiazolo[3,2-f]xanthene derivatives

✍ Scribed by O. S. Anisimova; Yu. N. Sheinker; P. M. Kochergin; I. A. Mazur


Book ID
112326180
Publisher
Springer US
Year
1974
Tongue
English
Weight
370 KB
Volume
10
Category
Article
ISSN
0009-3122

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## Abstract 5‐Oxo‐5__H__‐[1,3]thiazolo[3,2‐__a__]pyrimidine‐6‐carboxylic acid (**4**), and 6‐methylimidazo[2,1‐__b__]thiazole‐5‐carboxylic acid (**17**) were reacted with amines **6a‐i** by the reaction with oxalyl chloride and __N, N__‐di methyl‐formamide as a catalyst into primary and secondary a