Molecular recognition during 1,2-addition of chiral vinyl organometallics to chiral .beta.,.gamma.-unsaturated ketones. Case studies of three 7,7-disubstituted 2-norbornenones. Part 5
Copper(I)-Catalyzed Addition of Grignard Reagents to in Situ-Derived <i>N</i>-Sulfonyl Azoalkenes: An Umpolung Alkylation Procedure Applicable to the Formation of Up to Three Contiguous Quaternary Centers
作者:John M. Hatcher、Don M. Coltart
DOI:10.1021/ja100932q
日期:2010.4.7
that has considerable potential with regard to catalysis and the direct incorporation of functionality not amenable to the use of enolate chemistry. Herein, we describe the first Cu(I)-catalyzed addition of Grignardreagents to in situ-derived N-sulfonyl azoalkenes. This method is remarkable in its ability to deliver highly sterically hindered compounds that would be difficult or impossible to synthesize
Molecular recognition during 1,2-addition of chiral vinyl organometallics to chiral .beta.,.gamma.-unsaturated ketones. Case studies of three 7,7-disubstituted 2-norbornenones. Part 5
作者:Leo A. Paquette、Keith S. Learn、Jeffrey L. Romine、Ho Shen. Lin