TY - JOUR
T1 - Air Oxidation of Benzene to Biphenyl - A Dual Catalytic Approach
AU - Mukhopadhyay, Sudip
AU - Rothenberg, Gadi
AU - Lando, Gilad
AU - Agbaria, Kasim
AU - Kazanci, Murat
AU - Sasson, Yoel
PY - 2001/7
Y1 - 2001/7
N2 - Facile oxidative homocoupling of benzenes to the respective biphenyls is effected under moderate conditions, using air or oxygen in the presence of catalytic PdCl2 and AcOH/AcONa as solvent. The fast regeneration of the active Pd2+ species is accomplished by combining several oxygen-binding catalysts, such as Zr(IV), Mn(II), and Co(II) acetates. In this way, it is possible to increase the content of active oxygen in solution so that the rate of catalyst regeneration is faster than the rate of aggregation of the "spent catalyst", Pd(0), to palladium black. The effects of various process parameters are studied and some mechanistic implications are discussed.
AB - Facile oxidative homocoupling of benzenes to the respective biphenyls is effected under moderate conditions, using air or oxygen in the presence of catalytic PdCl2 and AcOH/AcONa as solvent. The fast regeneration of the active Pd2+ species is accomplished by combining several oxygen-binding catalysts, such as Zr(IV), Mn(II), and Co(II) acetates. In this way, it is possible to increase the content of active oxygen in solution so that the rate of catalyst regeneration is faster than the rate of aggregation of the "spent catalyst", Pd(0), to palladium black. The effects of various process parameters are studied and some mechanistic implications are discussed.
KW - Atom economy
KW - C-C coupling
KW - Homogeneous catalysis
KW - Oxidative coupling
KW - Oxygen activation
KW - Palladium
UR - http://www.scopus.com/inward/record.url?scp=0000636665&partnerID=8YFLogxK
U2 - 10.1002/1615-4169(200107)343:5<455::AID-ADSC455>3.0.CO;2-O
DO - 10.1002/1615-4169(200107)343:5<455::AID-ADSC455>3.0.CO;2-O
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AN - SCOPUS:0000636665
SN - 1615-4150
VL - 343
SP - 455
EP - 459
JO - Advanced Synthesis and Catalysis
JF - Advanced Synthesis and Catalysis
IS - 5
ER -