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Retropinacol/Cross-pinacol Coupling Reactions - A Catalytic Access to 1,2-Unsymmetrical Diols
Published on: April 4, 2014
Alcohol cross-coupling for the kinetic resolution of diols via oxidative esterification
Christine Hofmann1, Jan M Schümann, Peter R Schreiner
1Institute of Organic Chemistry, Justus-Liebig University , Heinrich-Buff-Ring 58, 35392 Giessen, Germany.
Abstract:
We present an organocatalytic C-O-bond cross-coupling strategy to kinetically resolve racemic diols with aromatic and aliphatic alcohols, yielding enantioenriched esters. This one-pot protocol utilizes an oligopeptide multicatalyst, m-CPBA as the oxidant, and N,N'-diisopropylcarbodiimide as the activating agent. Racemic acyclic diols as well as trans-cycloalkane-1,2-diols were kinetically resolved, achieving high selectivities and good yields for the products and recovered diols.
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