Diketene as an alternative substrate for a new Biginelli-like multicomponent reaction: one-pot synthesis of 5-carboxamide substituted 3,4-dihydropyrimidine-2(1H)ones
作者:Ahmad Shaabani、Mozhdeh Seyyedhamzeh、Ali Maleki、Fatemeh Hajishaabanha
DOI:10.1016/j.tet.2010.04.028
日期:2010.6
5-Carboxamide substituted 3,4-dihydropyrimidine-2(1H)one derivatives were synthesized in a simple and efficient method from the one-pot four-component reactions of an aliphatic or aromatic amine, diketene, an aromatic aldehyde and urea or thiourea in the presence of p-toluenesulfonic acid as a catalyst under mild reaction conditions at ambient temperature. (C) 2010 Elsevier Ltd. All rights reserved.