甲基碘化镁 、 4,4'-dimethyl-3,4,5,8-tetrahydrospiro<2H-1-benzopyran-2,2'-<1,3>dioxolan> 在
甲酸甲酯 、
二甲基亚砜 作用下,
生成 6ξ-<2'-(2'',4'',4''-trimethyl-1'',3''-dioxolan-2''-yl)ethyl>cyclohex-2-en-1-one 、
6ξ-methyl-6-<2'-(2'',4'',4''-trimethyl-1'',3''dioxolan-2''-yl)ethyl>cyclohex-3-en-1-one 、 6ξ-methyl-6-<2'-(2'',4'',4''-trimethyl-1'',3''dioxolan-2''-yl)ethyl>cyclohex-2-en-1-one 、 2,6ξ-dimethyl-6-<2'-(2'',4'',4''-trimethyl-1'',3''dioxolan-2''-yl)ethyl>cyclohex-2-en-1-one