5-{(3R,4S,1'R)-3-[1'-(tert-butyldimethylsilyloxy)ethyl]-2-oxo-azetidin-4-yl}-4,7-dimethylene-2-phenyl-3a,4,7,7a-tetrahydro-isoindole-1,3-dione 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
甲苯 为溶剂,
反应 1.0h,
以95%的产率得到5-{(3R,4S,1'R)-3-[1'-(tert-butyldimethylsilyloxy)ethyl]-2-oxo-azetidin-4-yl}-4,7-dimethyl-2-phenylisoindole-1,3-dione