The palladium catalyzed allylic alkylation of bis(trimethylsilyl) substituted propenyl acetates or carbonates in the presence of chiral ligands
作者:Donna L. Romero、Edward L. Fritzen
DOI:10.1016/s0040-4039(97)10380-x
日期:1997.12
Palladium catalyzed asymmetric allylic alkylations of a bis(trimethylsilyl) substituted propenyl acetate and carbonate were investigated using various chiral ligands and reaction conditions. The best enantioselectivity (86% e.e.) was obtained with the substrate 1-phenyl-3,3-bis(trimethylsilyl)propenyl carbonate 13 and the chiral oxazoline ligand 4c.
使用各种手性配体和反应条件,研究了钯催化的双(三甲基甲硅烷基)取代的乙酸丙烯酯和碳酸酯的不对称烯丙基烷基化反应。用底物1-苯基-3,3-双(三甲基甲硅烷基)丙烯基碳酸酯13和手性恶唑啉配体4c获得最佳的对映选择性(86%ee)。