Potassium Cyanide → (3SR,4RS)-3-(3,4-Dichloro-phenyl)-4-[(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amino]-pyrrolidine-1-carboxylic acid 3-cyano-propyl ester

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of (3SR,4RS)-3-(3,4-dichloro-phenyl)-4-[(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amino]-pyrrolidine-1-carboxylic acid 3-chloro-propyl ester (XVI-1) (40 mg, 0.068 mmol) in DMF (2 ml) was added potassium cyanide (5.0 mg, 0.077 mmol) and 18 crown 6-ether (18 mg, 0.068 mmol). The reaction mixture was stirred at 40° C. overnight, concentrated under vacuo. The product was purified by preparation HPLC to yield 18 mg (45%) of the title product as a colorless oil. ES-MS m/e: 532.1 (M+H+).

Provenance & Evidence