反应详情

A solution of 1,1′-sulfonyldiimidazole (1.50 g, 7.57 mmol) in DCM (25 mL) at 0° C. was treated dropwise with methyl trifluoromethane sulfonate (830 μL, 7.57 mmol) and stirred cold for 3 hours. The precipitate was collected by filtration washing with DCM and air-dried to give the title compound (2.70 g, 98%) as a white solid solid. LCMS (m/z, Method A) ES+ 213.0 [M+1]+.

1. filtrationThe precipitate was collected by filtration
2. washwashing with DCM
3. customair-dried