Regioselective Synthesis of Highly Functionalized Arylphosphonates by Cyclocondensation of 1,3-Bis(trimethylsilyloxy)buta-1,3-dienes with 3-Ethoxy-2-phosphonylalk-2-en-1-ones - Fatunsin, Olumide; Shkoor, Mohanad; Riahi, Abdolmajid; Langer, Peter (Synlett, 2010)