<i>C</i>-Alkylation of Chiral Tropane- and Homotropane-Derived Enamines
作者:David M. Hodgson、Andrew Charlton、Robert S. Paton、Amber L. Thompson
DOI:10.1021/jo3025972
日期:2013.2.15
The synthesis and alkylation of chiral, nonracemic tropane- and homotropane-derived enamines is examined as an approach to enantioenriched α-alkylatedaldehydes. The two bicyclic N auxiliaries, which differ by a single methylene group, give opposite senses of asymmetric induction on alkylation with EtI and provide modestly enantioenriched 2-ethylhexanal (following hydrolysis of the alkylated iminium)