The first enantioselective intramolecular aminocarbonylation of alkenes promoted by Pd(II)-spiro bis(isoxazoline) catalyst
作者:Toshio Shinohara、Midori A. Arai、Kazuhiko Wakita、Takayoshi Arai、Hiroaki Sasai
DOI:10.1016/s0040-4039(02)02650-3
日期:2003.1
acceleration effect of spiro bis(isoxazoline) ligand (SPRIX) on the Pd(II)-catalyzed intramolecular aminocarbonylation of alkenyl amine derivatives was realized. Furthermore, the chiral Pd(II)–SPRIX catalyst accomplished the first enantioselective intramolecular aminocarbonylation. The reaction of N-(2,2-dimethyl-pent-4-enyl)-p-toluenesulfonamide in the presence of Pd(II)–SPRIX catalyst and p-benzoquinone in
实现了螺双(异恶唑啉)配体(SPRIX)对Pd(II)催化的烯基胺衍生物的分子内氨基羰基化的高度配体促进作用。此外,手性Pd(II)-SPRIX催化剂完成了第一个对映选择性分子内氨基羰基化反应。的反应ñ - (2,2-二甲基-戊-4-烯基) - p在Pd(II)存在-SPRIX催化剂和-toluenesulfonamide p在甲醇苯醌的一氧化碳气氛下,得到[4,4-二甲基-1-(对甲苯磺酰基)-吡咯烷-2-基]-乙酸甲酯,产率高,对映选择性中等。