(Z)-N-((3aS,4S,6R,6aS)-6-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-2-methylpropan-1-imine oxide 、
(2,2-dichloro-1-methoxy-vinyloxy)-trimethysilane 在
zinc(II) chloride 作用下,
以
四氢呋喃 为溶剂,
反应 6.5h,
生成 (R)-4,4-dichloro-2-((3aS,4S,6R,6aR)-6-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-3-isopropylisoxazolidin-5-one