A green and cheap protocol for the photocatalytic hydroxylation of arylboronic acids is presented. 2,2-Dimethoxy-2-phenylacetophenone proved to be the best photoinitiator, among a range of organocatalysts in promoting this reaction. This photocatalytic protocol can be expanded into a wide substrate scope of aromatic boronic acids bearing various functional groups, leading to the corresponding phenols in good to high yields under mild reaction conditions, which include water as solvent, light irradiation provided from standard light-bulbs at room temperature.

中文翻译：

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芳基硼酸绿色光有机催化合成苯酚

提出了一种用于芳基硼酸光催化羟基化的绿色廉价方案。在促进该反应的一系列有机催化剂中，2,2-二甲氧基-2-苯基苯乙酮被证明是最好的光引发剂。该光催化协议可以扩展到带有各种官能团的芳香硼酸的广泛底物范围，在温和的反应条件下以良好的收率产生相应的酚类，包括水作为溶剂，标准灯泡在室内温度。