反应详情

To a solution of 237.8 mg (0.5 mmol) of the product of Example 203 in 2 ml dichlocomethane, was added lml of trifluoroacetic acid and the reaction was stirre at room temperature for 2 h. The resulting mixture was concentrated in vacuo to provide 200 mg (95%) of the desired product as a white solid after trituration with hexane/ether (2:1). Electrospray Mass Spec 418(M-H).

1. concentrationThe resulting mixture was concentrated in vacuo