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• W2003017454 startingPage "1258" @default.
• W2003017454 abstract "Organic nanoparticles of metalloporphyrins can be a versatile catalyst for the selective oxidation of alkenes and other hydrocarbons. The catalytic activity of the metalloporphyrin depends on the nature of the central metal atom, peripheral groups, and the architecture of the porphyrin macrocycle. Herein, we report the catalytic activity of organic nanoparticles of 5,10,15,20-tetrakis-(2,3,4,5,6-pentafluorophenyl)porphyrinato manganese(III), Mn (III)TPPF 20 , for the oxidation of cyclohexene using molecular oxygen as an oxidant in aqueous solvent under ambient conditions. While the solvated metalloporphyrins catalytically oxidize alkenes to the corresponding epoxide with a modest turn-over numbers, ca. 30 nm organic nanoparticles of Mn (III)TPPF 20 have enhanced catalytic activity with up to a two-fold greater turn-over number and yields only allylic oxidation products. The activity of organic nanoparticles is slow compared to the solvated metalloporphyrins. These organic nanoparticles catalytic systems facilitate a greener reaction since ca. 89% of the reaction medium is water, molecular oxygen is used in place of man-made oxidants, and the ambient reaction conditions require less energy. This organic nanoparticle catalytic system also avoids using halogenated solvents commonly used in solution phase reactions. The enhanced catalytic activity of these organic nanoparticles is unexpected because the metalloporphyrins in the nanoaggregates are in the close proximity and the turn-over number should diminish by self-oxidative degradation." @default.
• W2003017454 created "2016-06-24" @default.
• W2003017454 creator A5025863343 @default.
• W2003017454 creator A5078360952 @default.
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• W2003017454 date "2011-11-01" @default.
• W2003017454 modified "2023-09-27" @default.
• W2003017454 title "Nanoaggregates of <font>Mn</font>(III)tetraperfluorophenylporphyrin: a greener approach for allylic oxidation of olefins" @default.
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• W2003017454 doi "https://doi.org/10.1142/s1088424611004130" @default.
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