dibenzyl 2-allyl-2-(4-methyl-3-methylenepent-4-enyl)malonate 在
chlorobis(cyclooctene)rhodium(I) dimer 、
silver trifluoromethanesulfonate 、 (S)-(+)-(3,5-dioxa-4-phosphacyclohepta[2,1-a:3,4-a']dinaphthalen-4-yl)diethylamine 作用下,
以
乙二醇二甲醚 为溶剂,
反应 11.0h,
生成
(2R,3R)-dibenzyl 3-methyl-3-(prop-1-en-2-yl)-2-vinylcyclopentane-1,1-dicarboxylate 、 (2S,3S)-dibenzyl 3-methyl-3-(prop-1-en-2-yl)-2-vinylcyclopentane-1,1-dicarboxylate