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Enantioselectivity in visible light-induced, singlet oxygen [2+4] cycloaddition reactions (type II photooxygenations)
Christian Wiegand1, Eberhardt Herdtweck, Thorsten Bach
1Department Chemie and Catalysis Research Center (CRC), Technische Universität München, 85747 Garching, Germany.
Chemical Communications (Cambridge, England)
|September 11, 2012
Abstract:
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.