Allyl bis-trifluoroethylphosphonoacetate 、 {(2S,3S,3aS,5aR,6R,7R,8aR,8bR)-2-[(E)-2-(2,2-Dimethyl-6-oxo-6H-[1,3]dioxin-4-yl)-vinyl]-6-ethyl-7-methyl-1,2,3,3a,5a,6,7,8,8a,8b-decahydro-as-indacen-3-yl}-acetaldehyde 在
18-冠醚-6 potassium carbonate 作用下,
以
甲苯 为溶剂,
反应 4.0h,
生成 (E)-4-{(2S,3S,3aS,5aR,6R,7R,8aR,8bR)-2-[(E)-2-(2,2-Dimethyl-6-oxo-6H-[1,3]dioxin-4-yl)-vinyl]-6-ethyl-7-methyl-1,2,3,3a,5a,6,7,8,8a,8b-decahydro-as-indacen-3-yl}-but-2-enoic acid allyl ester 、 (E)-4-{(2S,3S,3aS,5aR,6R,7R,8aR,8bR)-2-[(E)-2-(2,2-Dimethyl-6-oxo-6H-[1,3]dioxin-4-yl)-vinyl]-6-ethyl-7-methyl-1,2,3,3a,5a,6,7,8,8a,8b-decahydro-as-indacen-3-yl}-but-2-enoic acid allyl ester