Trifluoroacetic acid → 1-{3-Chloro-4-[2-(2,4-difluoro-benzylamino)-ethoxy]-phenyl}-3-(5-cyano-pyrazin-2-yl)-urea

Participants

Reaction Conditions

Reaction Steps

To a solution of tert-butyl 2-(2-chloro-4-(3-(5-cyanopyrazin-2-yl)ureido)phenoxy)ethyl-(2,4-difluorobenzyl)carbamate (0.53 g, 0.95 mmol) in tetrahydrofuran (5 mL) at 0° C. was added trifluoroacetic acid (1.19 g, 9.5 mmol), and the resulting mixture was heated at 40° C. for 12 hours. The solvent was removed under reduced pressure to leave a residue that was purified by preparative HPLC (Preparative HPLC Method 1) to give the title compound (44 mg, 10%).

Provenance & Evidence