The first acid and ester enols: 2,2-bis(pentamethylphenyl)ethene-1,1-diol and 1-t-butoxy-2,2-bis(pentamethylphenyl)ethenol, and their oxidation to stable free radicals
Abstract
Desilylation of the ketene acetals (5) and (9) provides the ene-1,1-diols (6) and (10) which undergo relatively slow ketonisation and are oxidized to stable free radicals in basic solution.