methyl (3R,4R)-4-(phenylmethoxycarbonylamino)piperidine-3-carboxylate   、                                                                                      
4-(3-methoxyphenylamino)pyrrolo[2,1-f][1,2,4]triazin-5-ylmethyl triethylammonium bromide                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 12.0h,
                                                                                                                以89%的产率得到(3R,4R)-methyl 4-(benzyloxycarbonylamino)-1-((4-(3-methoxyphenylamino)pyrrolo[2,1-f][1,2,4]triazin-5-yl)methyl)piperidine-3-carboxylate