Proton-assisted activation of a Mn-OOH for aromatic C-H hydroxylation through a putative [Mn&z.dbd;O] species

Adding HClO 4 to [(BnTPEN)Mn III -OO] + in MeOH generates a short-lived Mn III -OOH species, which converts to a putative Mn V &z.dbd;O species. The potent Mn V &z.dbd;O species in MeCN oxidizes the pendant phenyl ring of the ligand in an intramolecular fashion. The addition of benzene cause...

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Published in:Chemical communications (Cambridge, England) England), 2024-06, Vol.6 (51), p.652-6523
Main Authors: Gupta, Sikha, Sharma, Parkhi, Jain, Khyati, Chandra, Bittu, Mallojjala, Sharath Chandra, Draksharapu, Apparao
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Summary:Adding HClO 4 to [(BnTPEN)Mn III -OO] + in MeOH generates a short-lived Mn III -OOH species, which converts to a putative Mn V &z.dbd;O species. The potent Mn V &z.dbd;O species in MeCN oxidizes the pendant phenyl ring of the ligand in an intramolecular fashion. The addition of benzene causes the formation of (BnTPEN)Mn III -phenolate. These findings suggest that high valent Mn species have the potential to catalyze challenging aromatic hydroxylation reactions. Adding HClO 4 to [(BnTPEN)Mn III -OO] + in MeOH generates a short-lived Mn III -OOH species, which converts to a putative Mn V &z.dbd;O species. The potent Mn V =O species in MeCN oxidizes the pendant phenyl ring of the ligand in an intramolecular fashion.
ISSN:1359-7345
1364-548X
DOI:10.1039/d4cc00798k