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The chemical behavior of the cumyloxyl radical was studied by nanosecond laser flash photolysis of dicumylperoxide. By using nicotinamide derivatives as model compounds of Nicaraven, the quenching of the cumyloxyl radical was examined. Pyridine, formamides, acetoamides, benzamides, 2-propanol, n-butylamine were also used as quenchers. The rate constants of the reactions of the cumyloxyl radical with the quenchers were determined. The quenching rate constants for the nicotinamides were dependent on the alkylamide group presumed by hydrogen abstraction by cumyloxyl radical and the alkylamide group of the nicotinamides was concluded to be the key functional group for the quenching of the cumyloxyl radical. |
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