HCID 59631942, compound → HCID 59631919, compound

Participants

Reaction Steps

To a solution of 5-(3-(benzyloxy)phenyl)-1-(2-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazole in MeOH (100 mL) was added 10% palladium on carbon (1.04 g). The black suspension was shaken on the Pair hydrogenator at 40-50 psi hydrogen pressure for 5 hours. At this time the reaction was incomplete as evidenced by HPLC analysis. The reaction suspension was treated with additional Pd/C and shaken under 60 psi hydrogen pressure for an additional 16 hours. At this time HPLC showed no remaining starting 5-(3-(benzyloxy)phenyl)-1-(2-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazole. The reaction mixture was filtered through a pad of Celite that was then washed thoroughly with MeOH. The filtrate was concentrated under reduced pressure to afford 3-(1-(2-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)phenol as a brittle foam. This material was pure enough for use in subsequent transformations. MS(ES): 339 [M+H]+.

Provenance & Evidence