Silver-catalyzed cross-dehydrogenative coupling of benzoxazine-2-ones with resorcinol

Silver-catalyzed cross-dehydrogenative coupling of benzoxazin-2-ones with resorcinol is reported. This method provides an easy and direct C3-arylation of benzoxazin-2-ones at ambient condition at the expenses of inexpensive ammonium persulfate as an oxidant. A radical pathway has been proposed for the transformation.