An Improvement of the Palladium-Catalyzed [4+2] Cycloaddition of o-(Silylmethyl)benzyl Carbonates with Alkenes
作者:Ryoichi Kuwano、Yushu Jin、Kentaro Ishizuka
DOI:10.1055/s-0034-1379014
日期:——
complex, which is generated in situ from Pd(η 3-C3H5)Cp and tris(4-methoxy-3,5-dimethylphenyl)phosphine, catalyzed the [4+2] cycloaddition of o-(silylmethyl)benzyl carbonates with alkenes. The reaction of the benzyl esters with methyl crotonate gave methyl 3-methyltetralin-2-carboxylate in 84% yield with 2% catalyst loading.
钯配合物由 Pd(η 3-C3H5)Cp 和三(4-甲氧基-3,5-二甲基苯基)膦原位生成,催化邻(甲硅烷基甲基)苄基碳酸酯与烯烃。苄酯与巴豆酸甲酯的反应以84%的收率和2%的催化剂负载得到3-甲基四氢化萘-2-羧酸甲酯。