2-[(4-ethynyl-2-fluorophenyl)amino]-3,4-difluoro-N-(2-hydroxyethoxy)benzamide → 2-[(4-ethyl-2-fluorophenyl)amino]-3,4-difluoro-N-(2-hydroxyethoxy)benzamide

Participants

Reaction Steps

A mixture of the product of Example 7A, 2-[(4-ethynyl-2-fluorophenyl)amino]-3,4-difluoro-N-(2-hydroxy-ethoxy)benzamide (11.0 g, 31.40 mmol), Pd—C (10%, 1.0 g) in THF (100 mL) and MeOH (100 mL) was subject to hydrogenation (25 psi) for 14.8 hrs (The reaction was followed by HPLC until all SM peak disappeared.). The mixture was filtered through Celite® and the filtrates were concentrated to give a light yellow solid. The solid was recrystallized from heptane-EtOAc to give the title compound as a white solid, 6.97 g, 62.8%, mp 112-112.5° C. Anal.: C, 58.00 (57.63); H, 4.99 (4.84); N, 7.59 (7.91); F, 15.55 (16.09).

Provenance & Evidence