2-[(methoxycarbonyl)methyl]-5-vinylidene-4,5-dihydrofuran-3-carboxylic acid methyl ester 在
palladium diacetate
1,3-双(二苯基膦)丙烷 作用下,
以
甲苯 为溶剂,
反应 98.0h,
生成 (3aR,8aS,8bS)-7-Methoxycarbonylmethyl-1,3-dioxo-1,3,3a,4,8a,8b-hexahydro-benzo[1,2-b;3,4-c']difuran-8-carboxylic acid methyl ester