反应详情

To a solution of 4a (0.55 g) in 8 mL of DCM, was added trifluoroacetic acid (3 mL, 33 eq) at room temperature. The reaction mixture was stirred at room temperature for 3 h then the solvent and excess trifluoroacetic acid were removed under a stream of nitrogen to give 0.57 g of 4b.

1. customthe solvent and excess trifluoroacetic acid were removed under a stream of nitrogen