Enantioselectivity in organo transition metal chemistry. An unprecedented ligand effect in π-allyl palladium chemistry
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 11,p. 718-719
- https://doi.org/10.1039/c39880000718
Abstract
In the palladium catalysed allylic alkylation of Schiff bases derived from glycine methyl ester, using Pd-chiral diphosphine ligands, the enantiomeric excess (e.e.) depends upon the proportion of chiral ligand, showing a maximum effect (e.e. up to 62%) for a molar ratio of 2; a 1 : 1 Pd : diphosphine ligand ratio leads to substantially lower e.e. values and reverses the enantioselection.Keywords
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