A. Mckillop et al., A SIMPLE AND EFFICIENT PROCEDURE FOR THE PREPARATION OF P-QUINOLS BY HYPERVALENT IODINE OXIDATION OF PHENOLS AND PHENOL TRIPROPYLSILYL ETHERS, Journal of the Chemical Society. Perkin transactions. I, (15), 1994, pp. 2047-2048
Oxidation of para-substituted phenols with [bis(trifluoroacetoxy) iodo
]benzene (BTIB) in aqueous acetonitrile at 0 degrees C gives p-quinols
in moderate to good yields; higher yields are obtained when tripropyl
silyl ethers of phenols are used.