Acetic Anhydride → trans-N-{[2-(2-methyl-2H-indazol-4-yl)cyclopropyl]methyl}acetamide

Participants

Reaction Steps

To a solution of trans-1-[2-(2-methyl-2H-indazol-4-yl)cyclopropyl]methanamine (100 mg, 0.497 mmol) and triethylamine (104 μL, 0.746 mmol) in tetrahydrofuran (5 mL) was added acetic anhydride (70.5 μL, 0.746 mmol) under ice-cooling, and the mixture was stirred at room temperature for 5 min. The reaction solution was diluted with saturated aqueous sodium hydrogen carbonate solution. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography (methanol/ethyl acetate=0/100→10/90) and recrystallization (ethyl acetate/hexane) to give the title compound (63.2 mg, yield 52%).

Provenance & Evidence