tert-butyl 2-[(benzylamino)carbonyl]-3-phenylpiperidine-1-carboxylate   、                                                                                      trifluoracetic acid-dichloromethane                                                                                                                                                              在
                                                                                                                                                                                 
acetonitrile-water                                                                                                                                  作用下,
                                                                                                                                                                                        反应 3.0h,
                                                                                                                以to yield 2-[(benzylamino)carbonyl]-3-phenylpiperidinium trifluoroacetate (91%)的产率得到2-[(benzylamino)carbonyl]-3-phenylpiperidinium trifluoroacetate