Synthesis of Venlafaxine from Azadiene via a Hetero-Diels-Alder Approach: New Microwave-Assisted Transketalization and Hydroxymethylation Reactions - Panunzio, Mauro; Bandini, Elisa; D’Aurizio, Antonio; Xia, Zhining; Mu, Xiaojing (Synthesis, 2008)