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Research on 4H-3,1-benzoxazines. 8. Synthesis and properties of 4H-3,1-benzoxazinium chlorides

โœ Scribed by E. V. Gromachevskaya; T. P. Kosulina; V. G. Kul'nevich

Book ID
104792533
Publisher
Springer US
Year
1993
Tongue
English
Weight
277 KB
Volume
29
Category
Article
ISSN
0009-3122

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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