Roger Adams Laboratory, Department of Chemistry , University of Illinois , Urbana , Illinois 61801 , United States.
J Am Chem Soc. 2019 Sep 4;141(35):13767-13771. doi: 10.1021/jacs.9b07019. Epub 2019 Aug 21.
A method for the catalytic, enantioselective, intermolecular, 1,2-sulfenoamination of alkenes is described. Functionalization is achieved through the intermediacy of an enantioenriched, configurationally stable thiiranium ion generated by Lewis base activation of a readily available sulfur electrophile. A diverse set of anilines and benzylamines react with different styrenes to afford products in good yield and stereoselectivity. Downstream manipulation of the products is facilitated by deprotonation of the amines to enable carbon-sulfur bond cleavage.
描述了一种用于催化、对映选择性、分子间 1,2-亚磺酰胺化烯烃的方法。官能化是通过路易斯碱活化易得的硫亲电试剂生成的手性富集、构型稳定的硫𬭩离子中间体实现的。各种苯胺和苄胺与不同的苯乙烯反应,以良好的收率和立体选择性得到产物。通过对胺进行脱质子化,使碳-硫键断裂,从而方便了产物的下游操作。