Palladium-Catalyzed Intermolecular Asymmetric Dearomative Annulation of Phenols with Vinyl Cyclopropanes

Org Lett. 2022 Jul 15;24(27):4865-4870. doi: 10.1021/acs.orglett.2c01594. Epub 2022 Jul 1.

Abstract

Herein, we report the Pd(0)-catalyzed intermolecular asymmetric dearomative [3 + 2] annulation of phenols with vinyl cyclopropanes via in situ generated ortho-quinone methide intermediates. A series of highly functionalized spiro-[5,6] bicycles which bear three contiguous stereogenic centers including one all-carbon quaternary were obtained with excellent stereoselectivities. Density functional theory (DFT) calculations indicate that the reactions were controlled by thermodynamics.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Cyclopropanes*
  • Molecular Structure
  • Palladium*
  • Phenols
  • Stereoisomerism

Substances

  • Cyclopropanes
  • Phenols
  • Palladium