3,5-Dimethylpyrazole → 3-(3,5-Dimethylpyrazol-1-yl)sulfonyl-1-dimethylcarbamoyl-1H-1,2,4-triazole

Participants

Reaction Conditions

Reaction Steps

A mixture of 3,5-dimethylpyrazole (100 mg), 3-chlorosulfonyl-1-dimethylcarbamoyl-1H-1,2,4-triazole (Example 54-a) (480 mg), anhydrous potassium carbonate (280 mg), and acetonitrile (1.5 ml) was heated and stirred for 2 hours on an oil bath at 50° C. The reaction solution was extracted with ethyl acetate-water. The organic layer was washed with saturated aqueous sodium chloride solution, and concentrated. The residue was subjected to a silica-gel column chromatography with 20 to 30% (20% 2-propanol/ethyl acetate)/hexane, and the title compound (210 mg) was obtained by crystallization in ethyl acetate-hexane.

Provenance & Evidence