2,2-dimethyl-5-{1-[4-(trifluoromethyl)phenyl]ethylidene-1,3-dioxane}-4,6-dione 、
diethylzinc 在
copper(II) bis(trifluoromethanesulfonate) 、
(3,5-Dioxa-4-phospha-cyclohepta[2,1-a;3,4-a']dinaphthalen-4-yl)-bis-((R)-1-phenyl-ethyl)-amine 作用下,
以
乙二醇二甲醚 为溶剂,
以87%的产率得到(R)-2,2-dimethyl-5-(1-methyl-1-[4-(trifluoromethyl)phenyl]propyl)-1,3-dioxane-4,6-dione