(2S,4R)-tert-butyl 4-(2-chloro-4-fluorophenylthio)-2-(1-cyanocyclopropylcarbamoyl)pyrrolidine-1-carboxylate                                                                                                                                                                                              以
                                                                                         
甲酸                                                                                  为溶剂,
                                                                                                                                                                                        以yielded (2S,4R)-4-(2-chloro-4-fluorophenylthio)-N-(1-cyanocyclopropyl)pyrrolidine-2-carboxamide as a light yellow viscous oil (99%)的产率得到(2S,4R)-4-(2-chloro-4-fluorophenylthio)-N-(1-cyanocyclopropyl)pyrrolidine-2-carboxamide