Alkylation of the (η4-cyclohexa-1,3-diene)(η5-cyclopentadienyl)(dicarbonyl)-molybdenum hexafluorophosphate with the highly functionalized zinc–copper reagents RCu(CN)Znl

Abstract

The addition of a variety of the highly functionalized zinc–copper reagents RCu(CN)Znl to the title cation at the terminus of the coordinated diene ligand gives [Mo(π-allyl)(CO)₂(Cp)](Cp = cyclopentadienyl) complexes with the functionalized side-chain at the C-4 position of the ring: intramolecular cyclisation of the (π-allyl)molybdenum complex 4 containing a pendant propanoic acid unit generates the δ-lactone derivative 6.