Highly enantioselective metallation–substitution alpha to a chiral nitrile†
Arghya Sadhukhan,Melanie C. Hobbs,Anthony J. H. M. Meijer,Iain Coldham
Chemical Science Pub Date : 10/25/2016 00:00:00 , DOI:10.1039/C6SC03712G
Abstract

We report the deprotonation of a chiral nitrile and reaction of the resulting chiral organometallic species with a variety of electrophiles to give highly enantiomerically enriched 2-substituted nitrile products. The nitrile was treated with TMPMgCl and the resulting anion, an asymmetric alpha cyano Grignard species, was found to be configurationally stable at low temperature for a short time (half-life several minutes at −104 °C).

Graphical abstract: Highly enantioselective metallation–substitution alpha to a chiral nitrile