Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 82, Issue 4, Pages 2231-2236Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.6b02863
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- University of Mississippi
- National Institute of General Medical Sciences [P20GM104932]
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2,2,4,4,4-Pentafluoro-3,3-dihydroxyketones are valuable precursors to difluoroenolates following fragmentation during the release of trifluoroacetate; however, there are few synthetic strategies to prepare this unique class of compound. We addressed this issue and report a mild, two-step synthesis of 2,2,4,4,4-pentafluoro-3,3-dihydroxyketones from aldehydes. Specifically, aldehydes are treated with pentafluoropropen-2-olate, generated from a new fragmentation of hexafluoroisopropanol with a mixed Mg/Li amide, to give pentafluoroalcohols. A subsequent oxidation with Dess-Martin periodinane provides the targets in good isolated yields.
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