Heterogeneous Suzuki cross-coupling reactions over palladium/hydrotalcite catalysts

J Colloid Interface Sci. 2006 Oct 15;302(2):568-75. doi: 10.1016/j.jcis.2006.06.058. Epub 2006 Aug 2.

Abstract

The efficiency of various heterogeneous solids consisting of palladium supported on hydrotalcite as catalysts in the Suzuki cross-coupling reaction between bromobenzene and phenylboronic acid was studied. Based on the catalytic activity results, the reaction develops to an acceptable extent with 100% selectivity at moderate temperatures in the presence of some of the catalysts. The best results were provided by a catalyst consisting of an acetate-pyridine complex of Pd supported on hydrotalcite that gave high conversion values even after three reuses. The reactions conditions were very mild (a temperature of 55 degrees C and atmospheric pressure). In fact, the catalyst provided conversion and selectivity results surpassing those of existing heterogeneous phase catalysts and most homogeneous phase catalysts for the same purpose.

MeSH terms

  • Adsorption
  • Aluminum Hydroxide / chemistry*
  • Biphenyl Compounds / chemical synthesis*
  • Biphenyl Compounds / chemistry
  • Boronic Acids / chemistry
  • Bromobenzenes / chemistry
  • Catalysis
  • Magnesium Hydroxide / chemistry*
  • Magnetic Resonance Spectroscopy / methods
  • Molecular Structure
  • Organometallic Compounds / chemical synthesis
  • Organometallic Compounds / chemistry*
  • Palladium / chemistry*
  • Particle Size
  • Sensitivity and Specificity
  • Solvents / chemistry
  • Spectrophotometry, Infrared / methods
  • Surface Properties
  • Temperature

Substances

  • Biphenyl Compounds
  • Boronic Acids
  • Bromobenzenes
  • Organometallic Compounds
  • Solvents
  • hydrotalcite
  • diphenyl
  • Aluminum Hydroxide
  • Palladium
  • bromobenzene
  • benzeneboronic acid
  • Magnesium Hydroxide