A New Synthesis of Methyl 7H-Dibenz[b,g]oxocin-6-carboxylates from Morita-Baylis-Hillman Adducts of 2-Phenoxybenzaldehydes - Ahn, Sang-Hyun; Jang, Seung Soon; Han, Eun-Gu; Lee, Kee-Jung (Synthesis, 2011)