A Novel Reaction of 4-(Arylmethylene)-2-phenyloxazol-5(4H)-ones with Pyridin-2-amine: Formation of 3-(Arylmethyl)-3-(benzoylamino)imidazo-[1,2-a]pyridin-2(3H)-ones - Tu, Shujiang; Zhang, Junyong; Jia, Runhong; Zhang, Yan; Jiang, Bo; Shi, Feng (Synthesis, 2007)