Demetallation of 1,3-diene products obtained from addition of natural products to tricarbonyl(cyclohexadienyl)iron tetrafluoroborate

The demetallation of adducts obtained from the addition of biologically active natural products to [Fe (1-5-η-C6H7) (CO)3][BF4] using the oxidizing agent, trimethylamine-N-oxide, afford new organic compounds which are otherwise inaccessible by conventional organic techniques. The products of demetallation were characterized using NMR (1H, 13C), MS and IR spectroscopic measurements.