

RECYCLIZATION OF N-ARYLITACONIMIDES WITH CARBOXIMIDAMIDES – A NOVEL EFFICIENT METHOD FOR THE SYNTHESIS OF 2-(2-AMINO-6-OXO-1,4,5,6-TETRAHYDROPYRIMIDIN-5-YL)ACETANILIDES

Abstract
A convenient method for the preparation of 2-(2-amino-6-oxo-1,4,5,6-tetrahydropyrimidin-5-yl)acetanilides based on the reaction of N-arylitaconimides with various carboximidamides has been proposed. In the course of the transformation, a cascade reaction occurs encompassing the aza-Michael addition of carboximidamides to N-arylitaconimides and the subsequent recyclization of intermediates to dihydropyrimidine acetanilides.
Keywords
carboximidamides; dihydropyrimidines; itaconimides; hybrid molecules; recyclization.
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv