42401-15-0Relevant academic research and scientific papers
Organoiron complexes of podocarpic acid derivatives
Cambie, Richard C.,Metzler, Michael R.,Rutledge, Peter S.,Woodgate, Paul D.
, p. 117 - 131 (1990)
Treatment of the non-conjugated 1,4-dienes obtained by Birch reduction of podocarpa-8,11,13-trien-19-ol (2) and 12,19-dimethoxypodocarpa-8,11,13-triene (4) with Fe3(CO)12 leads (albeit in low yields) in each case to a mixture of η4-1,3-diene iron complexes whose structure have been assigned by NMR spectroscopy.One of these complexes has been successfully converted into a cationic η5-dienyl iron salt (35) by treatment with acid.Attempted complexation of the 1,4-dienol ethers by treatment with a variety of sources of Fe(CO)3 under mild conditions has led to the conclusion that prior conversion of a 1,4-dienol ether into a 1,3-dienol ether is necessary for success.In model studies, treatment of 1-methoxy-3,4-dimethylcyclohexa-1,4-diene (9) with Fe3(CO)12 has given η4-diene and subsequently η5-dienyl iron complexes.
