Synthesis and reactions of some new heterocyclic compounds related to pyrrolylthieno[2,3-d]pyrimidines and thieno[2,3-d][4,5-d]dipyrimidines

Article abstract of DOI:10.1080/10426500590906067

Condensation of ethyl-5-amino-2,4-diphenylthieno[2,3-d]pyrimidine-6- carboxylate (3a) with 2,5-dimethoxy tetrahydrofurane in acetic acid gives the corresponding 5-pyrrolyl derivative 4, which in turn could be easily reacted with hydrazine hydrate in ethan