Methyl iodide → 3-(6-Fluoro-3-methyl-1,2-benzisoxazol-5-yl)-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

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Reaction Steps

A mixture of 3-(6-fluoro-3-methyl-1,2-benzisoxazol-5-yl)-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione (3.00 g, 9.12 mmol) and potassium carbonate (2.52 g, 18.2 mmol) in N,N-dimethylformamide is stirred for 15 minutes, treated with methyl iodide (2.58 g, 18.2 mmol), stirred at room temperature overnight, and poured into an ice-water mixture. The resultant aqueous mixture is filtered to obtain a solid which is recrystallized from a methylene chloride/hexanes solution to give the title product as a white solid (mp 158-159° C.) which is identified by NMR spectral analyses.

Provenance & Evidence