A metal-free route for the synthesis of biarenes has been developed. This approach is based on the photoextrusion of a phosphate moiety occurring upon irradiation of biaryl- and triarylphosphates. The reaction involved an exciplex as the intermediate and it is especially suitable for the preparation of electron-rich biarenes.
Keywords: aryl phosphates; biarenes; metal-free synthesis; photochemistry; photoextrusion
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Qrareya, H.; Meazza, L.; Protti, S.; Fagnoni, M. Beilstein Arch. 2020, 2020110. doi:10.3762/bxiv.2020.110.v1
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