3-Substituted 2-pyridones were enantioselectively (68–90% ee) converted into the respective 3-hydroxypyridine-2,6-diones by a sequence consisting of a template-mediated type II photooxygenation and an acid-catalysed rearrangement.
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Enantioselectivity in visible light-induced, singlet oxygen [2+4] cycloaddition reactions (type II photooxygenations) of 2-pyridones
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Department Chemie and Catalysis Research Center (CRC), Technische Universität München, 85747 Garching, Germany
E-mail: thorsten.bach@ch.tum.de ;
Fax: +49 89 28913315 ;
Tel: +49 89 28913330
E-mail: thorsten.bach@ch.tum.de ;
Fax: +49 89 28913315 ;
Tel: +49 89 28913330
Chem. Commun., 2012,48, 10195-10197
DOI: 10.1039/C2CC35621J
Received 02 Aug 2012, Accepted 22 Aug 2012
First published online 10 Sep 2012
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