丙烯酰碘 、
(S)-2-{(4R,5R,6S)-2,2,5-Trimethyl-6-[(R)-1-((4R,5S)-2,2,5-trimethyl-[1,3]dioxan-4-yl)-ethyl]-[1,3]dioxan-4-yl}-propionaldehyde 在
1,2-dimethyl-2-imidazolidinone 、 tin(ll) chloride 作用下,
以
苯 为溶剂,
反应 0.02h,
以3%的产率得到(2R,3R)-2-{(4S,5S,6S)-2,2,5-Trimethyl-6-[(R)-1-((4R,5S)-2,2,5-trimethyl-[1,3]dioxan-4-yl)-ethyl]-[1,3]dioxan-4-yl}-hex-5-en-3-ol