Photoinduced direct hydration of dipyridylacetylenes (DPAs) in acidic aqueous solution was achieved upon UV irradiation at room temperature. This is a catalyst-free reaction with moderate-to-good yields, and asymmetric dipyridylacetylenes afford the corresponding Markovnikov addition products.

中文翻译：

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二吡啶基乙炔在酸性水溶液中的光诱导直接水合。

在室温下通过紫外线照射，可实现在酸性水溶液中二吡啶基乙炔（DPA）的光诱导直接水合。这是无催化剂的反应，产率中等至良好，不对称的二吡啶基乙炔可提供相应的马尔可夫尼科夫加成产物。