Diastereo- and Enantioselective Synthesis of Oxazine and Oxazolidine Derivatives with a Chiral Quaternary Carbon Center under Multifunctional Catalysis
作者:Zhichao Jin、Xiao Wang、Huicai Huang、Xinmiao Liang、Jinxing Ye
DOI:10.1021/ol102643a
日期:2011.2.18
An easy one-pot, multistep cascade reaction which could afford a series of substituted benzo[d]pyrido[2,1-b]oxazolidine and [1,3]oxazine derivatives in a highly enantio- (up to 98% ee) and diastereoselective (4:1 to >20:1 dr) manner with generally good to excellent yields (up to 99%) has been developed. This well designed strategy could be applied to a wide scope of substrates under mild conditions
一种简单的一锅多步级联反应,可以提供一系列对映体(最高ee为98%)的取代的苯并[ d ]吡啶并[2,1- b ]恶唑烷和[1,3]恶嗪衍生物。已经开发了非对映选择性(4:1至> 20:1 dr)的方法,通常具有良好的优良收率(高达99%)。这种精心设计的策略可在温和条件下以简单的操作应用于多种基材。