Research Article
An Efficient Synthesis of Phenols via Oxidative Hydroxylation of Arylboronic Acids Using (NH4)2S2O8
Table 2
Effects of (NH4)2S2O8 on the hydroxylation of 1a a.
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Reaction conditions: 1a (0.41 mmol), MeOH : H2O 6 : 1 (3 mL), and 80°C. bThe reaction did not reach completion. cYield determined by 1H NMR of the crude reaction product. dYields obtained after chromatographic purification. Nr: no reaction. |