Asymmetric Synthesis of Tri- and Tetrasubstituted Trifluoromethyl Dihydropyranones from α-Aroyloxyaldehydes via NHC Redox Catalysis
ACS Catalysis2014Vol. 4(8), pp. 2696–2700
Citations Over TimeTop 10% of 2014 papers
Abstract
The asymmetric synthesis of tri- and tetrasubstituted trifluoromethyl dihydropyranones via an NHC-catalyzed redox process, introducing methyl, benzyl, and aryl substituents to the C(5) position, is presented. Their substrate-controlled derivatization into δ-lactones and cyclic hemiacetals containing stereogenic trifluoromethyl groups is also described.
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