Organocatalytic Asymmetric Synthesis of Sulfoxides from Sulfenic Acid Anions Mediated by a <i>Cinchona</i>-Derived Phase-Transfer Reagent
作者:Fabien Gelat、Jayadevan Jayashankaran、Jean-François Lohier、Annie-Claude Gaumont、Stéphane Perrio
DOI:10.1021/ol2010962
日期:2011.6.17
Preliminary results concerning a conceptually novel route to chiral sulfoxides based on the asymmetric alkylation of sulfenate salts with alkyl halides mediated by a chiral phase-transfer catalyst are described. As a representative example, o-anisyl methyl sulfoxide was produced in 96% yield and with an enantiomeric excess of 58% using commercial cinchonidinium derivative 2a.
本文描述了有关手性亚砜在手性相转移催化剂介导的亚磺酸盐与烷基卤化物的不对称烷基化的基础上获得手性亚砜的新颖方法的初步结果。作为代表性的例子,ö -anisyl甲基亚砜,96%收率和58%对映体过量使用商业金鸡尼丁衍生物制备2A。