Synthesis of planar chiral [2.2]paracyclophane-based amino thioureas and their application in asymmetric aldol reactions of ketones with isatins
作者:Yu Lu、Yudao Ma、Shaobo Yang、Manyuan Ma、Hongju Chu、Chun Song
DOI:10.1016/j.tetasy.2013.07.023
日期:2013.9
were used as bifunctional catalysts for organocatalytic enantioselective aldol reactions between ketones and isatins, affording the desired adducts containing a chiral tertiary alcohol in high yields (up to 92% yield) and with good enantioselectivity (up to 88% ee). This is a successful example of employing planar chiral [2.2]paracyclophane-based amino thioureas in asymmetric aldol reactions.
已经设计并合成了几种新颖的基于[2.2]对环环烷的氨基硫脲。[2.2]对环烷基氨基硫脲被用作双官能催化剂,用于酮和靛红之间的有机催化对映选择性醛醇缩合反应,以高收率(高达92%的收率)和良好的对映选择性(最高收率)提供了所需的含有手性叔醇的加合物。 88%ee)。这是在不对称醛醇缩合反应中使用基于平面手性[2.2]对环硫基的氨基硫脲的成功实例。