Abstract 2-Alkyl (aralkyl) sulfanyl-6-methylpyrimidin-4 (3 H)-ones and 4-alkyl (aralkyl) oxy-2- alkyl (aralkyl)-sulfanyl-6-methylpyrimidines having similar or different substituents on the sulfur and oxygen atoms were synthesized by alkylation of sodium salts derived from 6- methyl-2-thioxo-1, 2, 3, 4-tetrahydropyrimidin-4-one and 2-alkyl (aralkyl) sulfanyl-6- methylpyrimidin-4 (3 H)-ones with alkyl (propyl, ethyl, allyl) and aralkyl [benzyl, m- ...