S-Nanoparticle/SDS: an efficient and recyclable catalytic system for synthesis of substituted 4H-pyrido[1,2-a]pyrimidines in aqueous admicellar medium

Abstract

A novel and green methodology has been described for the synthesis of substituted 4H-pyrido[1,2-a]pyrimidines under admicellar catalysis by sulfur nano-particles that can be efficiently recycled up to the fifth run. The greenness of the procedure was well established, as organic solvent was avoided in the reaction media as well as in the preparation of catalyst.