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Photochemical behavior of 2 biphenylol in acidic aqueous solution

, : Photochemical behavior of 2 biphenylol in acidic aqueous solution. Chemosphere 18(7-8): 1391-1400

When 2-biphenylol (o.cntdot.phenylphenol) was irradiated in acidic aqueous solution, five photoproducts were isolated. Three of them were previously identified to phenylhydroquinone, phenylbenzoquinone and 2-hydroxydibenzofuran. Two other photoproducts are now identified by 300 MHz 1D and 2D NMR, as two isomeric acids from the scission of the phenolic ring. A photochemical equilibrium between these two photoproducts was observed. A mechanism involving phenylphenoxyl and superoxide radicals is suggested.


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