Iron-catalyzed cross-coupling of arylboronic acids with unactivated <i>N</i>-heterocycles and quinones under microwave heating

The iron-catalyzed direct arylation of a variety N-heteroarenes, quinones, and hydroquinones with arylboronic acids is investigated under microwave heating. reaction proceeds at 70 °C air using K 2 S O 8 as an oxidant FeSO 4 catalyst. Under heating, times decreased 14- to 115-fold. Reaction scope N-heteroarenes quinones comparable or slightly expanded when compared previous reports, but the acid utility was limited due previously unobserved hydroxydeboronation.