Reaction #1509578

Reaction equation

3-({1-[1-(4-Chloro-3-methyl-benzyl)-piperidin-4-yl]-5-oxo-pyrrolidine-2-carbonyl}-amino)-5-(1-methyl-1H-tetrazol-5-yl)-benzoic acid methyl ester

NaOH

→

title compound

Yield 83.6%

3-({1-[1-(4-Chloro-3-methyl-benzyl)-piperidin-4-yl]-5-oxo-pyrrolidine-2-carbonyl}-amino)-5-(1-methyl-1H-tetrazol-5-yl)-benzoic acid

Yield 83.6%

Solvents

MeOH

Conditions

Workup

1. 1
   OtherThe organic and aqueous layers were separated
2. 2
   Concentrationthe organic layer concentrated in vacuum
3. 3
   OtherThe residue was triturated in toluene

Procedure

To a solution of 3-({1-[1-(4-Chloro-3-methyl-benzyl)-piperidin-4-yl]-5-oxo-pyrrolidine-2-carbonyl}-amino)-5-(1-methyl-1H-tetrazol-5-yl)-benzoic acid methyl ester (270 mg) in MeOH (10 ml) at room temperature was added 4M NaOH (aq) (10 ml) and the reaction stirred overnight. The organic and aqueous layers were separated and the organic layer concentrated in vacuum. The residue was triturated in toluene and diethyl ether successively leaving the title compound (220 mg). Rt=0.96 min (method E).

Source