SYNTHESIS OF SOME NEW SUBSTITUTED

Abstract

Nitrilimines (4a-c), react with 2-aminopyrazine (5), and its 2-carboxylic acid derivative (6) by cyclocondensation, yielding the corresponding imidazo[1,2-a]pyrazines (7 and 8), respectively. The assignment of structures of the new compounds (7, 8) was based on their IR, MS and NMR spectral data