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Efficient synthesis of chiral benzofuryl β-amino alcohols via a catalytic asymmetric Henry reaction†
Wei Chen,Zhao-Hui Zhou,Hong-Bin Chen
Organic & Biomolecular Chemistry Pub Date : 01/18/2017 00:00:00 , DOI:10.1039/C6OB02569B
Abstract

Chiral β-amino alcohol ligands were found effective for the copper(II)-catalyzed asymmetric Henry reaction of benzofuran-2-carbaldehydes with nitromethane, which led to the formation of (S)-enriched benzofuryl β-nitro alcohols with satisfactory enantioselectivities (up to 98% ee). Using this catalytic protocol, bioactive (S)-benzofuryl β-amino alcohols could be conveniently prepared in short steps.

Graphical abstract: Efficient synthesis of chiral benzofuryl β-amino alcohols via a catalytic asymmetric Henry reaction
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