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A new series of bipyridine based chiral organocatalysts for enantioselective Henry reaction†
Veeramanoharan Ashokkumar,Kumaraguru Duraimurugan,Ayyanar Siva
New Journal of Chemistry Pub Date : 06/22/2016 00:00:00 , DOI:10.1039/C6NJ01045H
Abstract

A series of binaphthol based chiral organocatalysts were synthesized and applied as metal-free organocatalysts in the enantioselective Henry reaction. These organocatalysts enabled the Henry reaction with a lower concentration of catalysts at room temperature affording the desired S- or undesired R-enantiomers. The formation of R- and S-enantiomers of β-nitroalcohol products strongly depends on the temperature/substrate inversion of configuration for the effective catalytic enantioselective Henry reaction in high yields (up to 97%) with excellent enantioselectivities (up to 99% ee).

Graphical abstract: A new series of bipyridine based chiral organocatalysts for enantioselective Henry reaction
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