Green and recyclable sulfonated graphene and graphene oxide nanosheet catalysts for the syntheses of 3,4-dihydropyrimidinones

Article abstract of DOI:10.1007/s00706-016-1762-2

Abstract: Sulfated graphene and graphene oxide were used successfully as the heterogeneous catalysts for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones (-thiones) through the reaction between ethyl acetoacetate, an aldehyde, and an urea or thiourea, at