Steven D. Bull, Stephen G. Davies, Simon Jones, Jacqueline V. A. Ouzman, Anne J. Price and David J. Watkin
Lithium (E)-N-benzyl-O-(4-methoxy-4-phenylbut-2-enyl)- hydroxylamide undergoes a highly diastereoselective rearrangement via a chelated transition state, to afford after reduction, syn-3-benzylamino-4-methoxy-4-phenylbut-1-ene as a single diastereoisomer.