(3aR,5S,6R,6aR)-6-benzyloxy-2,2-dimethyl-5-vinyl-5-[(1R)-1-benzyloxybut-3-enyl]tetrahydrofuro[2,3-d][1,3]dioxole 在
Grubbs catalyst first generation 作用下,
以
苯 为溶剂,
反应 45.0h,
以67%的产率得到(3aR,4'R,5S,6R,6aR)-2,2-dimethyl-4',6-bis(phenylmethoxy)spiro[6,6a-dihydro-3aH-furo[2,3-d][1,3]dioxole-5,3'-cyclopentene]