TY - JOUR
T1 - Aerobic Oxidative Dehydrogenations Catalyzed by the Mixed-Addenda Heteropolyanion PV2Mo10O405-
T2 - A Kinetic and Mechanistic Study
AU - Neumann, Ronny
AU - Levin, Michal
PY - 1992/8/1
Y1 - 1992/8/1
N2 - The aerobic oxidative dehydrogenation of α-terpinene to p-cymene catalyzed by the mixed-addenda heteropolyanion PV2Mo10O405- has been used to investigate the oxidation mechanism catalyzed by this class of compounds. The kinetics of the reaction show it to be zero order in α-terpinene, first order in dioxygen, and second order in the heteropolyanion catalyst. The kinetic results along with the use of UV-vis, ESR, 31P NMR, and IR spectroscopy have enabled the formulation of a reaction scheme involving the formation of a stable substrate-catalyst complex in the catalyst reduction (substrate oxidation) stage and a μ-peroxo catalyst intermediate in the catalyst reoxidation stage where dioxygen is reduced to water in a four-electron redox reaction.
AB - The aerobic oxidative dehydrogenation of α-terpinene to p-cymene catalyzed by the mixed-addenda heteropolyanion PV2Mo10O405- has been used to investigate the oxidation mechanism catalyzed by this class of compounds. The kinetics of the reaction show it to be zero order in α-terpinene, first order in dioxygen, and second order in the heteropolyanion catalyst. The kinetic results along with the use of UV-vis, ESR, 31P NMR, and IR spectroscopy have enabled the formulation of a reaction scheme involving the formation of a stable substrate-catalyst complex in the catalyst reduction (substrate oxidation) stage and a μ-peroxo catalyst intermediate in the catalyst reoxidation stage where dioxygen is reduced to water in a four-electron redox reaction.
UR - http://www.scopus.com/inward/record.url?scp=0000858772&partnerID=8YFLogxK
U2 - 10.1021/ja00044a044
DO - 10.1021/ja00044a044
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AN - SCOPUS:0000858772
SN - 0002-7863
VL - 114
SP - 7278
EP - 7286
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 18
ER -