Scheme 3.
[a] Electrochemical or combined radiolytic and photochemical stepwise two‐electron and one‐proton transfer from dihydroheteroanthracenes.40, 41 [b] Chemical hydride transfer of xanthene to (Ph3C)ClO4.42 [c] Stepwise two‐electron and one‐proton transfer from 9‐substituted 10‐methyl‐9,10‐dihydroacridines to DDQ.43