R. Shintani, Wei-Liang Duan, Tamio Hayashi
Apr 8, 2006
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Journal
Journal of the American Chemical Society
Abstract
A rhodium-catalyzed asymmetric 1,4-addition of arylboronic acids to substituted maleimides has been described. The regioselectivity in this reaction is controlled by the choice of ligand (dienes or bisphosphines), and 1,4-adducts with a quaternary stereocenter can be obtained with high regio- and enantioselectivity by the use of (R)-H8-binap.