Hydrochloric Acid → 5-[(4-Methyl-1-piperazinyl)sulfonyl]-2-[(phenylmethyl)oxy]benzoic acid

Participants

Reaction Conditions

Reaction Steps

LiOH (15.39 mg, 0.64 mmol) was added to a stirred solution of methyl 5-[(4-methyl-1-piperazinyl) sulfonyl]-2-[(phenylmethyl)oxy]benzoate (may be prepared as described in Description 71; 260 mg, 0.64 mmol) in a mixture of tetrahydrofuran and water (3:1, 40 ml). The mixture was heated at 50° C. for 6 h and then diluted with ethyl acetate (50 nil). 10% Aqueous HCl was added to the mixture to adjust pH to 2. The organic phase was isolated, washed with brine, dried over MgSO4, and concentrated to yield the title compound as a white solid. 120 mg.

Provenance & Evidence