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- W324657570 abstract "Few problems have been as frequently addressed in the chemical literature in the last few years as the selective activation and/or functionalization of alkanes. In addition to the substantial number of studies involving alkane C-H bond cleavage processes in the gas phase or in solid matrices and theoretical work, there has been an explosion of knowledge with respect to systems that activate and/or functionalize alkanes in the liquid phase. Despite this new wealth of information, the radical chain oxidations of hydrocarbons by O{sub 2} developed by DuPont and others remain the dominant methods for introducing functional groups into alkanes. Nearly all the new systems (developed since 1980) for the non-radical-chain homogeneous catalytic functionalization of alkanes, including the intensely investigated metalloporphyrin systems, share a common and severe limitation. The catalysts in these systems are largely organic in nature and it is the thermodynamic oxidative instability of the organic structure that dooms such species as catalysts for practical and sustained selective alkane functionalization processes will oxidize the catalyst itself. When the catalyst is destroyed, alkane functionalization stops. It was in direct response to the problems of catalyst oxidative instability that we began to investigate the use of soluble completely inorganic and oxidativelymore » resistant polyoxotungstate complexes as catalysts for homogeneous organic oxidations. Initial results for both thermal and photochemical catalytic organic oxidations indicate these complexes have superior stability. We report here both the thermal and photochemical catalytic functionalization of alkanes by heteropolytungstate complexes.« less" @default.
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- W324657570 date "1987-04-01" @default.
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- W324657570 title "Polyoxometalates as homogeneous oxidatively resistant catalysts for difficult selective organic oxidations. Functionalization of alkanes" @default.
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