反应详情

The isolated 2-azido-3-[5-(3-trifluoromethyl-phenyl)-furan-2-yl]-acrylic acid ethyl ester was heated to 125° C. in p-xylene (5 ml) for 1 hour. The solvent was thereafter evaporated under reduced pressure to give 39.6 mg (96% yield) of 2-(3-trifluoromethyl-phenyl)-4H-furo[3,2-b]pyrrole-5-carboxylic acid ethyl ester as a brownish solid.

1. customThe solvent was thereafter evaporated under reduced pressure