4.8 Article

Enantioselective Synthesis of β-Trifluoromethyl-β-lactones via NHC-Catalyzed Ketene-Ketone Cycloaddition Reactions

Journal

ORGANIC LETTERS
Volume 11, Issue 18, Pages 4029-4031

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol901290z

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Funding

  1. National Natural Science Foundation of China [20602036, 20872143]
  2. Ministry of Science and Technology of China [2009ZX09501-018]

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The highly diastereo- and enantioselective synthesis of beta-trifluoromethyl-beta-lactones bearing two contiguous stereocenters was realized by chiral N-heterocyclic carbene-catalyzed formal cycloaddition reaction of alkyl(aryl)ketenes and trifluoromethyl ketones.

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