Radical Transfer Hydroamination with Aminated Cyclohexadienes Using Polarity Reversal Catalysis: Scope and Limitations
作者:Joyram Guin、Christian Mück-Lichtenfeld、Stefan Grimme、Armido Studer
DOI:10.1021/ja0692581
日期:2007.4.1
The synthesis of various new 1-aminated-2,5-cyclohexadienes is described. These reagents can be used in radical transfer hydroaminations of unactivated and electron-rich double bonds. With thiols as polarity reversal catalysts good yields are obtained. The radical hydroamination occurs with good to excellent anti-Markovnikov selectivity. Many functional groups such as alcohols, silyl ethers, phosphonates
描述了各种新的 1-胺化-2,5-环己二烯的合成。这些试剂可用于未活化和富电子双键的自由基转移加氢胺化。使用硫醇作为极性反转催化剂可获得良好的产率。自由基加氢胺化以良好至极好的抗马尔可夫尼科夫选择性发生。许多官能团如醇、甲硅烷基醚、膦酸酯、芳基溴化物、酰亚胺、酰胺以及酸性质子在反应条件下是可以耐受的。DFT 计算提供了对甲硅烷基、烷基和氨基取代的环己二烯基的芳构化以生成相应的 C-、Si-和 N-中心自由基的见解。