Abstract

Compared with the widespread use of Pd-catalyzed Wacker-type oxidation of olefins, iron catalysis for this transformation is almost virgin territory. Our work on an iron-catalyzed Wacker-type oxidation through reductive activation of dioxygen is discussed here. This novel single-electron-transfer process not only addresses the issues of the Pd-catalyzed two-electron Wacker-type oxidation, but also possesses unprecedented functional-group tolerance and chemoselectivity. Importantly, the catalytic system uses ambient air as the sole oxidant, and it permits late-stage oxidations of complex molecules.

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