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Enantioselective Annulations for Dihydroquinolones by in Situ Generation of Azolium Enolates

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Journal J Am Chem Soc
Specialty Chemistry
Date 2014 Jul 15
PMID 25017004
Citations 17
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Abstract

A convergent, catalytic asymmetric formal [4 + 2] annulation for the synthesis of dihydroquinolones has been developed. Carboxylic acids can be employed as precursors to NHC enolates through an in situ activation strategy. Simultaneous generation of a reactive aza-o-quinone methide under the basic conditions employed for NHC generation leads to a dual activation approach.

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