Pd(II)-Catalyzed Coupling-Cyclization of 1,2-Allenyl Phosphonic Acid Monoesters with Allylic Halides and Their Application to the Synthesis of 1,3-Dihydro[2,1]benzoxaphosphole 1-Oxides - Ma, Shengming; Yu, Fei; Zhao, Jinbo (Synlett, 2007)