5-Methoxycarbonyl-5-[2-(2-methylene-cyclopropyl)-ethyl]-hex-2-ynedioic acid dimethyl ester 在
Pd
(0) catalyst from bis(dibenzylideneacetone)palladium and tri-isopropyl phosphite 作用下,
以
甲苯 为溶剂,
反应 42.0h,
以40%的产率得到3-Methylene-2,3,3a,4,5,7-hexahydro-indene-1,6,6-tricarboxylic acid trimethyl ester