(+)-Sparteine-Mediated Substitution of<i>o</i>-Benzyl-<i>N</i>-pivaloylaniline with Ketones
作者:Yi Kyung Ko、Chan Im、Junghwan Do、Yong Sun Park
DOI:10.1002/ejoc.201402110
日期:2014.6
The (+)-sparteine-mediated lithiation–substitution of o-benzyl-N-pivaloylaniline with various ketones was investigated. The obtained highly enantioenriched tertiary alcohols were used for the synthesis of alkenyl-substituted products 12 and 13 as well as 3,3,4-trisubstituted tetrahydroquinoline derivatives 22–24. The reaction with α,β-unsaturated ketones afforded highly enantioenriched 1,4-addition