(3S,4R)-1-(but-3-enyl)-3-[(1R)-1-(pent-4-enoyloxy)ethyl]-4-propyl-2-azetidinone 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 、 C
4H
10*C
9H
22O
4Ti 作用下,
以
甲苯 为溶剂,
反应 24.0h,
生成 (4Z,10R,11S,13R)-10-methyl-8,12-dioxo-13-propyl-9-oxa-1-azabicyclo[9.1.1]tridec-4-ene 、
(4E,10R,11S,13R)-10-methyl-8,12-dioxo-13-propyl-9-oxa-1-azabicyclo[9.1.1]tridec-4-ene