N-(phenylaminosulfonyl)-piperidine-4-carboxamide 、 ethyl 5-cyano-6-hydroxy-2-[(2-oxo-pyrrolidin-1-yl)methyl]nicotinate 在
N,N-二异丙基乙胺 、 bromo-tris(1-pyrrolidinyl)phosphonium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
以34%的产率得到ethyl 6-{4-[(benzylsulfonyl)carbamoyl]piperidin-1-yl}-5-cyano-2-[(2-oxopyrrolidin-1-yl)methyl]nicotinate