Benzoic acid (S)-1-((R)-1-methyl-2-oxo-ethyl)-allyl ester 、
1-[(4R,5S,6R)-2,2-ditert-butyl-6-ethyl-5-methyl-1,3,2-dioxasilinan-4-yl]butan-2-one 在
四氯化钛 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
生成 Benzoic acid (1S,2S,3S,4R)-6-((4R,5S,6R)-2,2-di-tert-butyl-6-ethyl-5-methyl-[1,3,2]dioxasilinan-4-yl)-3-hydroxy-2,4-dimethyl-5-oxo-1-vinyl-hexyl ester 、 Benzoic acid (1S,2S,3R,4S)-6-((4R,5S,6R)-2,2-di-tert-butyl-6-ethyl-5-methyl-[1,3,2]dioxasilinan-4-yl)-3-hydroxy-2,4-dimethyl-5-oxo-1-vinyl-hexyl ester