Photo-Fries substituent effect

As a general rule, electron-donating substiments attached to the phenolic ring enhance photoreactivity, whereas electron-withdrawing substituents produce the opposite effect [5,6,29], For instance, the relative photo-Fries quanmm yield is more than two times higher for para-hydroxyphenyl benzoate than for para-acetylphenyl benzoate [5,6], Esters with susbstituents such as Cl or CH3 at the para position, as well as the unsubstituted compounds, have intermediate... [Pg.51]

Tsutsumi, K., Matsui, K., Shizuka, H. Substituent effects on the photo-Fries rearrangement of aryloxy-s-triazines Norrish type I dissociation. [Pg.591]

Zarkadis AK, GeorgaMlas V, Perdikomatis GP, Trifonov A, Gurzadyan GG, Skoulika S, Siskos MG (2005) Triplet- vs. singlet-state imposed photochemistry. The role of substituent effects on the photo-Fries and photodissociation reaction of triphenylmethyl silanes. Photochem Photobiol Sci 4 469-480... [Pg.181]

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