Electron-Withdrawing, Biphenyl-2,2′-diol-Based Compounds for Asymmetric Catalysis
作者:Elisa G. Gutierrez、Eric J. Moorhead、Eva H. Smith、Vivian Lin、Laura K. G. Ackerman、Claire E. Knezevic、Victoria Sun、Sharday Grant、Anna G. Wenzel
DOI:10.1002/ejoc.201000070
日期:——
Facile synthetic routes to a chiral chloro-substituted biphenyl-2,2′-diyl hydrogen phosphate and a chiral O,O-biphenyl-2,2′-diyl phosphoramidothioate are described. The performance of these compounds as catalysts for the hydrophosphonylation of imines and the Friedel–Crafts alkylation of indole was investigated. In the latter reaction, the chloro-substituted phosphoric acid derivative was found to
描述了手性氯代取代的联苯-2,2'-磷酸氢二酯和手性 O,O-联苯-2,2'-二基硫代磷酸酯的简便合成路线。研究了这些化合物作为亚胺氢膦酰化和吲哚的 Friedel-Crafts 烷基化催化剂的性能。在后一个反应中,发现氯代磷酸衍生物可与迄今为止报道的最好的布朗斯台德酸催化剂相媲美。