A facile synthesis of some thieno/furo-[2,3-d]pyrimidine-2-yl-thioacetic acid derivatives

Abstract

The reaction of 2-(?-chloroacetamido)-3-cyano-4,5-disubstituted thiophenes/furanes with ammonium thiocyanate in methanol or ethanol afforded methyl or ethyl (4-amino-5,6-disubstituted thieno/furo[2,3-d]-pyrimidine-2-yl)thioacetates in good yields.