A metal-free route for the synthesis of biarenes has been developed. The approach is based on the photoextrusion of a phosphate moiety occurring upon irradiation of biaryl- and triaryl phosphates. The reaction involves an exciplex as the intermediate and it is especially suitable for the preparation of electron-rich biarenes.

中文翻译：

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在磷酸二（三）芳基酯中通过光挤出无金属合成芳烃

已经开发了用于合成双芳烃的无金属路线。该方法基于在联芳基和三芳基磷酸酯的照射下发生的磷酸根部分的光挤出。该反应涉及一种激基复合物作为中间体，它特别适合于制备富电子的双芳烃。