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Recyclization of 2,2-disubstituted 4(3H)-oxo- and 4-chloro-1,2-dihydropyrimidines to 4-aminopyridine derivatives

✍ Scribed by A. V. Upadysheva; N. D. Grigor'eva; Yu. S. Ryabokobylko; A. P. Znamenskaya

Book ID: 112353786
Publisher: Springer US
Year: 1983
Tongue: English
Weight: 503 KB
Volume: 19
Category: Article
ISSN: 0009-3122
DOI: 10.1007/bf00512825

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## Abstract Functionalized 2,3‐dihydro‐1,3‐thiazin‐4(1H)‐one derivatives have been synthesized by cyclocondensation of 3‐alkyl(aryl)amino‐2‐cyano‐3‐mercaptoacrylamides with aldehydes and ketones under acidic catalysis. 6‐Alkyl(aryl)amino‐5‐cyano‐2,3‐dihy‐ dro‐1,3‐thiazin‐4(1H)‐ones, when treated wi