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A challenge in modern chemistry is selective catalytic functionalization of organic substrates using peroxides as terminal oxidants. The target fabrication of effective catalytic systems is aided by the high number of reactions between metal catalysts and organic peroxide compounds. M-chloroperoxybenzoic acid has a very complex behavior among the peroxide group, where several reactive species can be created as a result of reaction with a metal complex catalyst. The reaction mechanisms are critically discussed, with particular emphasis on the O–O bond splitting route. Selectivity parameters using approved model hydrocarbon substrates are outlined, and key factors that may lead to further catalytic experiments are highlighted.
Source link: https://doi.org/10.3390/catal11101148
The mechanism of the reaction between ferric Caldariomyces fumago chloroperoxidase and meta-chloroperoxybenzoic acid has been investigated. Cpd I can return to the ferric state by direct oxygen insertion into an organic substrate or two consecutive one-electron additions, the first resulting in an intermediate Fe -oxo species named Compound II. The peracid is used as an oxo donor to produce Cpd I and later as a shrinkant to minimize Cpd I to Cpd II, and, finally, Cpd II to the ferric state. With no apparent Cpd II intermediate, the original reaction system for ferric CCPO with mCPBA was hypothesized to involve a scrambling device with a unique Fe -OOO-CR intermediate that was not visible in the Cpd II intermediate.
Source link: https://doi.org/10.1142/s1088424612501234
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