反应详情

A solution of imidazole-1-sulfonic acid (4-fluoro-benzyl)-isobutyl-amide (260 mg, 835 μmol) in DCM (5 mL) at 0° C. was treated dropwise with methyl trifluoromethane sulfonate (101 μL, 918 μmol) and stirred cold for 2 hours. The mixture was concentrated under vacuum and used immediately in the next step. LCMS (m/z, Method A) ES+ 326.0 [M+1]+.

1. concentrationThe mixture was concentrated under vacuum