Synthesis of 6-aryl-N,N-diethyl-4-methyl-2-sulfanylidene-1,2,3,6-tetrahydropyrimidine-5-carboxamides

Three-component condensation of N,N-diethyl-3-oxobutanamide with aromatic aldehydes and thiourea afforded the corresponding 6-aryl-N,N-diethyl-4-methyl-2-sulfanylidene-1,2,3,6-tetrahydropyrimidine-5-carboxamides.