Palladium-Catalyzed Enantioselective Allylic Alkylations through C-H Activation
作者:Barry M. Trost、David A. Thaisrivongs、Etienne J. Donckele
DOI:10.1002/anie.201207870
日期:2013.1.28
reaction with 2‐acetyl‐1‐tetralones to form quaternary carbon stereocenters. This is a conceptually and mechanistically distinct strategy from traditional methods for the synthesis of enantioenriched allylic substitution products. 2,6‐DMBQ=2,6‐dimethylbenzoquinone.
A New Class of Non-<i>C</i><sub>2</sub>-Symmetric Ligands for Oxidative and Redox-Neutral Palladium-Catalyzed Asymmetric Allylic Alkylations of 1,3-Diketones
作者:Barry M. Trost、Etienne J. Donckele、David A. Thaisrivongs、Maksim Osipov、James T. Masters
DOI:10.1021/jacs.5b00786
日期:2015.2.25
We report the discovery, synthesis, and application of a new class of non-C-2-symmetric phosphoramidite ligands derived from pyroglutamic acid for use in both oxidative and redox-neutral palladium-catalyzed asymmetric allylic alkylations of 1,3-diketones. The resulting chiral products are typically obtained in high yield with good to excellent levels of enantioselectivity.