(1r,2s)-1-氨基-2-乙烯-环丙烷羧酸乙酯 、 (2S,4R)-1-(tert-butoxycarbonyl)-4-(5-phenyl-2H-tetrazol-2-yl)pyrrolidine-2-carboxylic acid 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 3.0h,
以94%的产率得到tert-butyl (2S,4R)-2-[[(1R,2S)-2-ethenyl-1-ethoxycarbonylcyclopropyl]carbamoyl]-4-(5-phenyltetrazol-2-yl)pyrrolidine-1-carboxylate