(E)-dimethyl 2-(2-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)allyl)-2-(prop-2-ynyl)malonate 在
silver hexafluoroantimonate 、 chloro(triphenylphosphine)gold(I) 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以79%的产率得到(E)-dimethyl 4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)cyclopent-3-ene-1,1-dicarboxylate