(2S,4R)-4-(2-chlorobenzenesulfonyl)-2-(1-cyanocyclopropylcarbamoyl)pyrrolidine hydrochloric acid 、
3,3,3-三氟丙醛 以to give (2S,4R)-4-(2-chloro-benzenesulfonyl)-1-(3,3,3-trifluoro-propyl)-pyrrolidine-2-carboxylic acid (1-cyano-cyclopropyl)-amide as a colorless oil的产率得到(2S,4R)-4-(2-chlorobenzenesulfonyl)-1-(3,3,3-trifluoropropyl)pyrrolidine-2-carboxylic acid (1-cyanocyclopropyl)amide