Action d'ylures de phosphore stabilisés sur divers aldéhydes α,β éthyléniques Fe(CO) 4 et Fe(CO) 3P(OMe) 3. Synthèse de diènes Fe(CO) 4 et Fe(CO) 3P(OMe) 3; influence de la substitution sur le site de complexation

Abstract

α,β-Unsaturated aldehydes complexed at the CC bond with Fe(CO) 3L units (L = CO, L = P(OMe) 3), readily react with stabilized phosphoranes. When L = CO, butadieneiron tetracarbonyl complexes are formed in 30 minutes. This reactivity contrasts with previous reports on these complexes. When the starting α,β-unsaturated aldehyde complexes are β-monosubstituted the metallic group moves to the double bond formed.