methyl(1RS,3RS,7SR)-8,8-dibromobicyclo<5.1.0>octane-4-spiro-2'-(1,3-dioxolane)-3-carboxylate 、 alkaline earth salt of/the/ methylsulfuric acid 在
3-溴丙烯 作用下,
以
乙醚 为溶剂,
反应 2.0h,
以47.1%的产率得到methyl (1'S,3'S,7'R,8'R)-8'-methyl-8'-prop-2-enylspiro[1,3-dioxolane-2,4'-bicyclo[5.1.0]octane]-3'-carboxylate