Trifluoroacetic acid → 4-{4-[2-fluoro-3-(hydroxymethyl)phenyl]piperazin-1-yl}pyridin-2(1H)-one

Participants

Reaction Steps

1-(2-tert-Butoxypyridin-4-yl)-4-[3-({[tert-butyl(dimethyl)silyl]oxy}methyl)-2-fluorophenyl]piperazine (3.14 g) was mixed with CH2Cl2 (50 ml), and TFA (5.1 ml) was added thereto, followed by stirring at room temperature overnight. The reaction mixture was concentrated under reduced pressure, and the residue was mixed with MeOH (2 ml). A 8 M NH3/MeOH solution (10 ml) was added thereto at 0° C., followed by stirring at room temperature for 2 hours. The solid in the reaction mixture was collected by filtration, washed with MeOH, and dried at 50° C. under reduced pressure to obtain 4-{4-[2-fluoro-3-(hydroxymethyl)phenyl]piperazin-1-yl}pyridin-2(1H)-one (1.76 g).

Provenance & Evidence