Axially chiral P-N ligands for the copper catalyzed beta-borylation of alpha,beta-unsaturated esters.

Org Biomol Chem

Centre for Synthesis and Chemical Biology, School of Chemistry and Chemical Biology, UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.

Published: June 2009

The synthesis and resolution of a new axially chiral Quinazolinap ligand are reported. The application of this and other related P-N ligands to the copper catalyzed beta-borylation of alpha,beta-unsaturated esters resulted in conversions of up to 100% and ee values of up to 79%. A diastereomerically pure palladacycle of the new ligand was characterised by X-ray crystallography.

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Source
http://dx.doi.org/10.1039/b900741eDOI Listing

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