(2S,5R)-methyl 5-ethynylpyrrolidine-2-carboxylate 在
Hoveyda-Grubbs catalyst second generation 、
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
四氢呋喃 、
甲苯 为溶剂,
反应 38.0h,
生成 methyl (3S,6S,8aR)-6-benzyl-6-(((benzyloxy)carbonyl)amino)-8-((E)-5-cyanopent-1-en-1-yl)-5-oxo-1,2,3,5,6,8a-hexahydroindolizine-3-carboxylate