(S)-1-[(E)-2-(5,5-Dimethyl-[1,3]dioxan-2-yl)-vinyl]-2-methoxymethyl-pyrrolidine 、 alkaline earth salt of/the/ methylsulfuric acid 以
四氢呋喃 为溶剂,
生成
(S)-1-[(1S,4S,5R)-5-(5,5-Dimethyl-[1,3]dioxan-2-yl)-4-furan-2-yl-2-methoxy-cyclopent-2-enyl]-2-methoxymethyl-pyrrolidine