4-Diethoxyphosphonyl-2-methyl-1,3-dienolates and their O-Acylated and O-Silylated Derivatives: New, Efficient and Highly Stereoselective Polyvinylogation Reagents - Mohamed-Hachi, Abdourahman; About-Jaudet, Elie; Combret, Jean-Claude; Collignon, Noël (Synthesis, 1999)