New ligands for asymmetric palladium catalysed allylic substitution reactions. X-ray crystal structures of two enantiomerically pure dihydrobenzazaphosphole-borane complexes
作者:Guy Brenchley、Michael Fedouloff、Mary F. Mahon、Kieran C. Molloy、Martin Wills
DOI:10.1016/0040-4020(95)00621-e
日期:1995.9
The synthesis, application and X-ray crystal structures of two enantiomerically pure dihydrobenzazaphosphole-borane complexes, precursors of ligands for highly enantioselective palladium catalysed allylic substitution reactions, are described. The structures provide the basis for an explanation of the observed stereochemistry.
A new class of chiral phosphorus catalyst for asymmetric palladium catalysed allylic substitution reactions
Asymmetric inductions of up to 91.5% have been achieved in a palladium catalysed allylic substitution reaction using a new class of enantiomerically pure phosphorus ligand.