4,4′-(Trimethylene)bis(2,6-di-t-butylphenoxy) diradical: An application of the sequential redox-solid state photolysis (SRSSP) method

Article abstract of DOI:10.1246/cl.1998.845

The oxidation of 4,4′-(trimethylene)bis(2,6-di-t-butylphenol) with lead dioxide underwent intramolecular cyclization at the 4,4′-positions to give a dispiro-compound. Irradiation of the dispiro-compound in a methylcyclohexane matrix at -150 °C produced 4,