(2R,3R)-pent-4-ene-2,3-diyl diacetate 、 (R)-1-[(4R,5R)-2,2-dimethyl-5-vinyl-1,3-dioxolan-4-yl]but-3-enyl acrylate 在
Hoveyda-Grubbs catalyst second generation 作用下,
以
苯 为溶剂,
反应 1.5h,
生成 (2R,3R,E)-5-{(4R,5R)-2,2-dimethyl-5-[(R)-6-oxo-3,6-dihydro-2H-pyran-2-yl]-1,3-dioxolan-4-yl}pent-4-ene-2,3-diyl diacetate