二碘甲烷 、 1-methyl-4-(2,2,3-trimethyl-cyclopent-3-enyl)-2-oxa-bicyclo[3.2.1]octane 、 1-methyl-4-(2,2,3-trimethyl-cyclopent-3-enyl)-2-oxa-bicyclo[2.2.2]octane 在
zinc/copper couple 作用下,
以
乙醚 为溶剂,
生成 1-methyl-4-(1,2,2-trimethylbicyclo[3,1,0]hex-3yl)-2-oxabicyclo[2,2,2]octane 、
5-methyl-1-(1,2,2-trimethylbicyclo[3.1.0]hex-3-yl)-6-oxabicyclo[3.2.1]octane