Photoarylation of alkenes and heteroaromatics by dibromo-BINOLs in aqueous solution

J Org Chem. 2010 May 21;75(10):3477-80. doi: 10.1021/jo100349h.

Abstract

The photochemistry of 6,6'-dibromo-BINOL (BINOL = 2,2'-dihydroxy-1,1'-binaphthyl) under mild basic conditions and its methyl and triisopropylsilyl ethers has been investigated in neat and aqueous acetonitrile through product distribution analysis and laser flash photolysis. Arylation and alkylation have been successfully achieved in the presence of allyltrimethylsilane, ethyl vinyl ether, pyrrole, pyridine, thiophene, benzene, and indole. Such a photoreactivity offers a metal and protecting group free synthetic protocol toward mono- and disubstituted 6-aryl/alkyl BINOLs, since the BINOL chirality is preserved in the photoactivation process.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkenes / chemistry*
  • Heterocyclic Compounds / chemistry
  • Hydrocarbons, Aromatic / chemistry*
  • Molecular Structure
  • Naphthols / chemical synthesis*
  • Naphthols / chemistry*
  • Photochemistry
  • Solutions
  • Stereoisomerism
  • Water / chemistry

Substances

  • Alkenes
  • Heterocyclic Compounds
  • Hydrocarbons, Aromatic
  • Naphthols
  • Solutions
  • Water