Solid‐State Chemistry at an Isolated Copper(I) Center with O2

A solid performer: Chemo- and regioselective oxygenation of an organic moiety with O2 in the solid state gives a CuI complex and a four-electron oxidized compound as final products (see scheme). A single CuI center in interaction with O2 mediates an even-electron transfer process without the assistance of a redox cofactor and provides further support for a [CuO2]+ core as a reactive species allowing CH bond cleavage.