benzyl 4-[(2S)-oxiran-2-yl]piperidine-1-carboxylate   、                                                                                      
(3R,3'R)-3',6-dimethyl-1,2-dihydrospiro[indole-3,4'-piperidine]                                                                                                                                                                                              以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 0.5h,
                                                                                                                以83%的产率得到phenylmethyl 4-{(1S)-2-[(3R,3'R)-3',6-dimethyl-1,2-dihydro-1'H-spiro[indole-3,4'-piperidin]-1'-yl]-1-hydroxyethyl}-1-piperidinecarboxylate