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Cyanoethylation of 2,5-dimethyltetrahydro-4-thiopyranone isomers and selective reduction of 2,5-dimethyl-5-(β-cyanoethyl)tetrahydro-4-thiopyranone and — 4-pi pe ridone

✍ Scribed by A. Sh. Sharifkanov; N. A. Bushneva; K. Kh. Tokmurzin; I. S. Chanysheva

Book ID: 112330669
Publisher: Springer US
Year: 1972
Tongue: English
Weight: 247 KB
Volume: 8
Category: Article
ISSN: 0009-3122
DOI: 10.1007/bf00478479

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## Abstract In the course of saponification experiments with bis(2‐cyanoethyl) 2,6‐dimethyl‐4‐(2‐nitrophenyl)‐1,4‐dihydro‐3,5‐pyridinedicarboxylate (**1**), an analogue of the calcium channel blocker nifedipine, three unexpected degradation products were isolated. The compounds were identified as 3