Journal
TETRAHEDRON
Volume 56, Issue 18, Pages 2857-2863Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(00)00141-1
Keywords
asymmetric reactions; conjugate additions; catalysis; organometals
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The chiral lactam-phosphine ligand and copper salt mediated asymmetric conjugate addition reaction of butylmagnesium chloride and diethylzinc with cycloalkenones afforded the addition products in moderate selectivity. Among phosphines examined, 5-[(diphenylphosphino)methyl]-3,3-dimethylpyrrolidin-2-one 5 gave rise to moderate enantioselectivity and high yield. (C) 2000 Elsevier Science Ltd. All rights reserved.
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