Trifluoroacetic acid → {2-cyano-4-[4-ethoxy-3-(trifluoromethyl)phenyl]-7H-pyrrolo[2,3-d]pyrimidin-7-yl}acetic acid

Participants

Reaction Steps

Trifluoroacetic acid (0.41 mL) was added to a solution of tert-butyl {2-cyano-4-[4-ethoxy-3-(trifluoromethyl)phenyl]-7H-pyrrolo[2,3-d]pyrimidin-7-yl}acetate (160 mg) in CH2Cl2 (1.6 mL) at room temperature, and the mixture was stirred at the same temperature for 5 hours. After the reaction mixture was concentrated under reduced pressure, the residue was purified by silica gel column chromatography (CHCl3:MeOH=100:0 to 80:20), whereby {2-cyano-4-[4-ethoxy-3-(trifluoromethyl)phenyl]-7H-pyrrolo[2,3-d]pyrimidin-7-yl}acetic acid (137 mg) was obtained as a white solid.

Provenance & Evidence