D'Amato EM, Neumann CN, Ritter T. Selective Aromatic C-H Hydroxylation Enabled by
η6-Coordination to Iridium(III).
Organometallics 2015;
34:4626-4631. [PMID:
26877574 DOI:
10.1021/acs.organomet.5b00731]
[Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report an aromatic C-H hydroxylation protocol in which the arene is activated through η6-coordination to an iridium(III) complex. η6-Coordination of the arene increases its electrophilicity and allows for high positional selectivity of hydroxylation at the site of least electron density. Through investigation of intermediate η5-cyclohexadienyl adducts and arene exchange reactions, we evaluate incorporation of arene π-activation into a catalytic cycle for C-H functionalization.
Collapse