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Thioamides of 2,4,4-tricyano-3-aryl-3-butenoic acid in the synthesis of substituted 3-cyano-2(1H)-pyridinethiones

โœ Scribed by A. M. Shestopalov; V. Yu. Mortikov; V. N. Nesterov; Yu. A. Sharanin; V. K. Promonenko; V. P. Litvinov

Book ID
112445198
Publisher
Springer
Year
1984
Tongue
English
Weight
51 KB
Volume
33
Category
Article
ISSN
1573-9171

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โœ Hyunil Lee; Kyongtae Kim ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 812 KB

## Treatment of the hydrochloride salts of 4-chloro-5-(2halomethylaryl-imino)-5H-l,2,3-dithiazoles (2) with sodium cyanoborohydride in THF at room temperature gave 2-cyan0-4H-3,l -benzothiazines ( I ) in good to moderate yields. 2-Cyano-4H-3,l -benzoxazines (4) were obtained in good to moderate yiel