ZWITTERIONIC SPECIES FROM DEPROTONATION OF ETA-6-ARENE-ETA-5-CYCLOPENTADIENYLIRON CATIONS AND THEIR REACTIONS AS NUCLEOPHILES

A variety of η6-arene-η5-cyclopentadienyliron cations in which the arene ligand has an α-carbon substituent containing one or more hydrogens can be deprotonated with base to give the corresponding neutral zwitterionic species. These zwitterions can react in situ as nucleaphiles with different substrates such as CH3I, other organic halides. CO2 and CS2 to give a wide range of synthetic applications. © 1979.