(4S,4aR,8aS)-2,6-Diphenyl-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxine-4-carbaldehyde 、
甲氧羰基亚甲基三苯基正膦 以
甲苯 为溶剂,
生成 (Z)-3-((4R,4aS,8aS)-2,6-Diphenyl-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl)-acrylic acid methyl ester 、 (E)-3-((4R,4aS,8aS)-2,6-Diphenyl-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl)-acrylic acid methyl ester