Regio- and Enantioselective Hydroamination of Dienes by Gold(I)/Menthol Cooperative Catalysis
作者:Osamu Kanno、Wataru Kuriyama、Z. Jane Wang、F. Dean Toste
DOI:10.1002/anie.201104076
日期:2011.10.10
Alcohol is key: Regio‐ and enantioselective hydroamination of 1,3‐dienes has been achieved with the dinuclear catalyst (R)‐DTBM‐SEGPHOS. The rate and selectivity of the reaction are enhanced by alcohol additives like menthol, which coordinates the cationic gold(I) to generate a Brønsted acid that can participate in catalysis. Mbs=p‐methoxybenzenesulfonyl.
醇是关键:已使用双核催化剂 ( R )-DTBM-SEGPHOS实现了 1,3-二烯的区域选择性和对映选择性加氢胺化。醇类添加剂如薄荷醇可提高反应的速率和选择性,薄荷醇与阳离子金 (I) 配位以生成可参与催化的布朗斯台德酸。Mbs=对甲氧基苯磺酰基。