反应详情

A stirred solution of 2-(2-tert-butoxycarbonylamino-ethyl)-4-(4-fluoro-phenyl)-5-formyl-1H-pyrrole-3-carboxylic acid ethyl ester (1.02 g, 2.5 mmol) in dichloromethane (25 ml) was added dropwise slowly with trifluoroacetic acid (2.5 ml) at room temperature. Upon completion of the addition, the mixture was stirred for 2 hours, and concentrated to give 2-(2-amino-ethyl)-4-(4-fluoro-phenyl)-5-formyl-1H-pyrrole-3-carboxylic acid ethyl ester which was used as such.

1. additionUpon completion of the addition
2. concentrationconcentrated