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Original Articles

SOME RING CLOSURE REACTIONS WITH CYANOTHIOFORMAMIDES: NEW ROUTE FOR THE SYNTHESIS OF (IMIDAZOLIDINE, OXAZOLIDINE & PYRROLINE)-IMINOTHIONES, BENZOTHIAZOLOQUINAZOLINONES AND IMIDAZOQUINOXALINES

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Pages 141-158 | Received 28 Jul 1999, Accepted 27 Sep 1999, Published online: 04 Oct 2006
 

Abstract

Cyanothioformarnides were reacted with isocyanates, isothiocyanates, aldehydes, acetylenedicarboxylic acid and anthranilic acids to produce imidazolidines, oxazolidines pyrroline, quinazolinones and benzothiazoloquinazolinones, respectively. Interaction of imidazolidineimino(thiones and dithiones) with o-phenylenediamines gave rise to imidazoquinoxalines and imidazoquinoxalinethiones, respectively.

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