Abstract
α,β-Unsaturated aldehydes complexed at the CC 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.
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