Stereospecific Intramolecular C–H Amination of 1-Aza-2-azoniaallene Salts
作者:Daniel A. Bercovici、Matthias Brewer
DOI:10.1021/ja303054c
日期:2012.6.20
participate in intramolecularC-H amination reactions to provide pyrazoline products in good to excellent yield. This intramolecular amination occurs readily at both benzylic and tertiary aliphatic positions and proceeds at an enantioenriched chiral center without loss of enantiomeric excess. A competition reaction shows that insertion occurs more readily at an electron-rich benzylic position than an