反应详情

TFA (2 mL) was added to a solution of tert-butyl 4-(5-chloro-1H-benzimidazol-2-yl)piperazine-1-carboxylate (72 mg) in DCM (2 mL) and the reaction was stirred for 1 h. The solvent was then evaporated under high vacuum for 1 h to afford the title compound as a gum which was used without further analysis.

1. customThe solvent was then evaporated under high vacuum for 1 h