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[Pd(L)Cl(2)]-Catalyzed Selective Hydroxylation of Arylboronic Acids to Phenols

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Field Value
 
Title [Pd(L)Cl(2)]-Catalyzed Selective Hydroxylation of Arylboronic Acids to Phenols
 
Creator CHOWDHURY, AD
MOBIN, SM
MUKHERJEE, S
BHADURI, S
LAHIRI, GK
 
Subject TRANSITION-METAL-COMPLEXES
LIGANDS (PH2P)(2)NH DPPA
HOMOCOUPLING REACTION
BOND FORMATION
ARYL HALIDES
PALLADIUM COMPLEX
MASS-SPECTROMETRY
CRYSTAL-STRUCTURE
ROOM-TEMPERATURE
HIGH YIELDS
Palladium
Homogeneous catalysis
Phosphane ligands
Hydroxylation
 
Description The palladium complex [Pd(L)Cl(2)] (1) has been prepared by the reaction of Pd(COD)Cl(2) (COD = 1,5-cyclooctadiene) with L [N,N'-bis(diphenylphosphanyl)-2-(diphenylphosphanyl)ethanamine]. The ligand L and complex 1 have been characterized by elemental analysis, mass spectrometry and (1)H/(31)P NMR spectroscopy. In the presence of O(2), 1 selectively catalyzes the hydroxylation of a variety of arylboronic acids to the corresponding phenol derivatives in solvents with low-dielectric constants at 298 K, although in solvents with high dielectric constants the same reaction leads to the formation of both phenol and the coupled product, i.e. biaryl. The mechanistic aspects of the selective phenol formation from arylboronic acid with 1 have been addressed.
 
Publisher WILEY-BLACKWELL
 
Date 2012-06-26T04:48:28Z
2012-06-26T04:48:28Z
2011
 
Type Article
 
Identifier EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,(21)3232-3239
1434-1948
http://dx.doi.org/10.1002/ejic.201100240
http://dspace.library.iitb.ac.in/jspui/handle/100/13902
 
Language English