A convenient and efficient three-step synthesis of 4,6-dimethyl-2-(methylsulfonyl) pyrimidine can be achieved by cyclocondensation of acetylacetone and thiourea in the presence of hydrochloric acid to yield 4,6-dimethyl-1-merc aptopyrimidine, methylation with dimethyl carbonate and tetrabutylammonium bromide to give 4,6-dimethyl-2-methyl thiopyrimidine, and oxidation with hydrogen peroxide, sodium tungstate and tetrabutylammonium bromide to afford the title compound in an overall yield of 75%.

This efficient three-step synthesis of 4,6-dimethyl-2-(methylsulfonyl) pyrimidine yields 75% of the final compound with a yield of 75% from acetylacetone, thiourea, and hydrogen peroxide.

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A Convenient Synthesis of 4,6-Dimethyl-2-(Methylsulfonyl)Pyrimidine

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