{5-[(E)-3-(2,2-Dimethyl-4,6-dioxo-[1,3]dioxan-5-ylidene)-propenyl]-furan-2-ylmethyl}-triphenyl-phosphonium; bromide 在
potassium hydrogencarbonate 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以85%的产率得到2,2-Dimethyl-5-((E)-3-{5-[(triphenyl-λ
5-phosphanylidene)-methyl]-furan-2-yl}-allylidene)-[1,3]dioxane-4,6-dione