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Copper-catalyzed asymmetric conjugate addition of diethylzinc to substituted chalcones using a chiral phosphine ligand

2011-09-15
Doğan, Özdemir
Bulut, Adnan
Polat, Savas
Tecimer, M. Ali
A series of chiral phosphine PFAM and phosphine oxide POFAM ligands were studied for the copper-catalyzed asymmetric diethylzinc addition to enones. One of these ligands, PFAM2, was an efficient catalyst with a variety of enones to give conjugate addition products in up to 96% yield and 92% ee. (C) 2011 Elsevier Ltd. All rights reserved.