SYNTHESIS OF 3-(2-MERCAPTO-4-THIAZOLYL)-2H-1-BENZOPYRAN-2-ONE AND ITS DERIVATIVES

SYNTHESIS OF 3-(2-MERCAPTO-4-THIAZOLYL)-2H-1-BENZOPYRAN-2-ONE AND ITS DERIVATIVES

Treatment of 3-(2-bromoacetyl)coumarins with ammonium dithiocarbamate provides 3-2-mercapto-4-thiazolyl)-2H-1-benzopyran-2-one (11) but not 4-hydroxy-4-(3-coumaririnyl) thiazolidine-2-thione (I). II undergoes smooth condensation with alkyl, aralkyl, phenacyl and acid halides to give corresponding th...

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Veröffentlicht in:Phosphorus, sulfur, and silicon and the related elements sulfur, and silicon and the related elements, 2000-01, Vol.164 (1), p.293-298
Hauptverfasser: Rao, V. Rajeswar, Adityavardhan, V., Srimanth, K.
Format: Artikel
Sprache:eng
Schlagworte:
Mercaptothiazole
mercaptothiazolyl coumarin and ammonium dithiocarbamate
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Zusammenfassung:Treatment of 3-(2-bromoacetyl)coumarins with ammonium dithiocarbamate provides 3-2-mercapto-4-thiazolyl)-2H-1-benzopyran-2-one (11) but not 4-hydroxy-4-(3-coumaririnyl) thiazolidine-2-thione (I). II undergoes smooth condensation with alkyl, aralkyl, phenacyl and acid halides to give corresponding thioethers and thioesters (III) respectively. The structures of the newly synthesized compounds were established on the basis of spectral data (IR, PMR and MS).
ISSN:1042-6507
1563-5325
DOI:10.1080/10426500008045254