Stereospecific, Nickel-Catalyzed Suzuki-Miyaura Cross-Coupling of Allylic Pivalates To Deliver Quaternary Stereocenters

Org Lett. 2017 Aug 18;19(16):4355-4358. doi: 10.1021/acs.orglett.7b02063. Epub 2017 Aug 7.

Abstract

Recognizing the importance of all-carbon, quaternary stereocenters in complex molecule synthesis, a stereospecific, nickel-catalyzed cross-coupling of allylic pivalates with arylboroxines to deliver products equipped with quaternary stereocenters and internal alkenes was developed. The enantioenriched allylic pivalate starting materials are readily prepared, and a variety of functional groups can be incorporated on both the allylic pivalate and the arylboroxine. Additional advantages include the use of a commercially available and air-stable Ni(II) salt and BISBI ligand, mild reaction conditions, and high yields and ee's. The observed stereoinversion of this reaction is consistent with an open transition state in the oxidative addition step.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Allyl Compounds / chemistry*
  • Boron Compounds / chemistry
  • Catalysis
  • Coordination Complexes / chemistry*
  • Ligands
  • Molecular Structure
  • Nickel / chemistry*
  • Oxidation-Reduction
  • Pentanoic Acids / chemistry*
  • Stereoisomerism

Substances

  • Allyl Compounds
  • Boron Compounds
  • Coordination Complexes
  • Ligands
  • Pentanoic Acids
  • Nickel
  • pivalic acid