1',5',6'-Tri-tert-butyl-1,3-dioxospirooxabicyclo<2.2.0>hex<5>en>-4'-carbonsaeure-tert-butylester 以
氘代氯仿 为溶剂,
反应 48.0h,
生成 tert-butyl (1'R,2'r,5'r,6'S)-1',5',6'-tri-tert-butyl-1,3-dioxo-1,3-dihydro-4'-oxaspiro[indene-2,3'-tricyclo[3.1.0.02,6]hexane]-2'-carboxylate