(2S,5R)-1-Benzyl-5-hydroxymethyl-pyrrolidine-2-carboxylic acid (3-trifluoromethoxy-phenyl)-amide → (2S,5R)-5-Hydroxymethyl-pyrrolidine-2-carboxylic acid (3-trifluoromethoxy-phenyl)-amide

To a solution of (2S,5R)-1-benzyl-5-hydroxymethyl-pyrrolidine-2-carboxylic acid (3-trifluoromethoxy-phenyl)-amide (500 mg, 1.27 mmol) in THF (5 mL) containing 5 drops of MeOH was added Pd/C (10%, 27 mg). The solution was degassed 3 times replacing air by nitrogen and finally nitrogen by hydrogen. The reaction mixture was further stirred under hydrogen atmosphere overnight. The catalyst was removed through a pad of Celite and washed with THF. Solvents were concentrated and the resulting material was used without purification in the next step. MS (LC/MS): 305 [M+H]+; tR (HPLC conditions b): 2.89 min.