1. Asymmetric Induction on Copper(I) Chloride catalyzed 1,4-addition of alkylmagnesium chlorides to alpha, beta-disubstituted (E)-enoylsultams and subsequent protonation
Wolfgang Oppolzer, Arend J. Kingma
Helvetica Chimica Acta
Volume 72 Issue 6 , Pages 1337-1345
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http://dx.doi.org/10.1002/hlca.19890720622 Sébastien R. Goudreau, André B. Charette
Angewandte Chemie International Edition
ASAP
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http://dx.doi.org/10.1002/anie.200905109