FLUORENONE KETYL ANIONS GENERATED IN HYDROCARBON MEDIA BY PHASE TRANSFER CATALYSIS

Article abstract of DOI:10.1016/S0040-4020(01)97643-4

Fluorenone ketyl anions with the counterions Buⁿ3S(1+), Buⁿ4N(1+) and (n-C12H25)3(CH3)N(1+) have been generated in benzene by decomposing fluorenopinacol with the relevant alkylammonium or alkylsulphonium base, under phase-transfer catalytic conditions.The recorded ESR spectra in the hydrocarbon medium exhibit a marked cation dependence.The phenomenon is interpreted on the basis of spin density transfer from the anion to the magnetic nuclei of the cation.The implications to the phase transfer catalysis are discussed.