Low-Temperature Heck Reactions of Axially Chiral <i>o</i>-Iodoacrylanilides Occur with Chirality Transfer: Implications for Catalytic Asymmetric Heck Reactions
作者:Andre J. B. Lapierre、Steven J. Geib、Dennis P. Curran
DOI:10.1021/ja067790i
日期:2007.1.1
Low-temperature Heckreactions of chiral o-iodoacrylanilides with achiral palladium catalysts occur with efficient transfer of chirality from the chiral axis of the precursor to the new stereocenter of the product. The results suggest that the primary stereocontrolling step in asymmetricHeckreactions is a dynamic kinetic resolution (oxidative addition to the C−I) bond and not a face selective reaction (complexation