4.8 Article

Diastereoselective Synthesis of γ-Substituted 2-Butenolides via (CDC)-Rh-Catalyzed Intermolecular Hydroalkylation of Dienes with Silyloxyfurans

Journal

ORGANIC LETTERS
Volume 19, Issue 1, Pages 90-93

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.6b03369

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Funding

  1. University of North Carolina at Chapel Hill
  2. Petroleum Research Fund of the American Chemical Society [52447-DNI1]

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Catalytic intermolecular hydroalkylation of dienes with, silyloxyfuran nucleophiles is reported. Reactions hare catalyzed by 5 mol % of a (CDC)-Rh-complex and proceed in up to 87% yield and 6:1 dr (syn/anti) to provide allylic butenolides bearing vicinal stereocenters Reactions proceed with terminal aryl and alkyl dienes and with modified-silyl-enol ether nucleophiles including a thiophenone variant. Utility of the products is demonstrated in the synthesis of a polypropionate anti,syn-stereotriad.

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