A new series of bipyridine based chiral organocatalysts for enantioselective Henry reaction
2016
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).
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