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Chiral Cobalt-Catalyzed Enantiomer-Differentiating Oxidation of Racemic Benzoins by Using Molecular Oxygen as Stoichiometric Oxidant

✍ Scribed by Santosh Kumar Alamsetti; Pandi Muthupandi; Govindasamy Sekar

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 196 KB
Volume: 15
Category: Article
ISSN: 0947-6539
DOI: 10.1002/chem.200900387

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✦ Synopsis

Abstract

An efficient enantioselective oxidative reaction catalyzed by a chiral cobalt complex has been developed by using molecular oxygen as the stoichiometric oxidant (see scheme). The very mild reaction conditions of the catalytic system provide access to a wide range of benzoins (α‐hydroxyketones) in high yield and excellent enantioselectivity (s (k~f~/k~s~) up to 47). This method is very versatile because the sole by‐product of our oxidation process is water, which makes our system more eco‐friendly and green.magnified image

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