Cobalt(III)-Catalyzed and DMSO-Involved Allylation of 1,3-Dicarbonyl Compounds with Alkenes

J Org Chem. 2022 Nov 4;87(21):14352-14363. doi: 10.1021/acs.joc.2c01796. Epub 2022 Oct 20.

Abstract

Cobalt(III)-catalyzed allylation of 1,3-dicarbonyl compounds has been reported with in situ generated allyl reagents from alkenes and dimethyl sulfoxide (DMSO). This novel protocol enables a high regio- and stereoselective access for a broad range of allyl 1,3-dicarbonyl compounds. In the transformation, DMSO plays the role of a C1 source, and it incorporates with alkenes to form the allyl reagent allylic methyl thioether. Moreover, a multiple-step pathway has been proposed to rationalize the mechanism study, which involves silver-mediated coupling, Co(III)-catalyzed π-allylation, and intermolecular nucleophilic substitution.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkenes*
  • Allyl Compounds*
  • Catalysis
  • Cobalt
  • Dimethyl Sulfoxide
  • Indicators and Reagents
  • Stereoisomerism

Substances

  • Alkenes
  • Dimethyl Sulfoxide
  • Allyl Compounds
  • Cobalt
  • Indicators and Reagents