Abstract
Alpha,beta-unsaturated amides derived from the chiral amino alcohol (S,S)-(+)-pseudoephedrine undergo a very clean and diastereoselective tandem conjugate addition/alpha-alkylation reaction. Excellent results have been achieved using a wide range of differently substituted conjugate acceptors, organolithium reagents, and alkyl halides. The chiral auxiliary could be easily removed from the obtained adducts by reduction, furnishing chiral nonracemic alpha,beta-branched alcohols in a very easy and efficient way. [reaction: see text]
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