(3S,4R)-ethyl 4-(allyloxycarbonylamino)piperidine-3-carboxylate 、 4-(3-ethynylphenylamino)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 6.0h,
以70%的产率得到(3S,4R)-methyl 4-(allyloxycarbonylamino)-1-((4-(3-ethynylphenylamino)pyrrolo[2,1-f][1,2,4]triazin-5-yl)methyl)piperidine-3-carboxylate