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Substituent Effects on the Photocycloaddition Reactions of Phenol to Benzonitriles
Al-Jalal, N. A.
, p. 1323 - 1327 (2007/10/02)
Methoxy-, methyl, and chloro-substituted benzonitriles undergo photocycloaddition to phenol to give substituted 1,2-dihydroazocin-2-ones III, by initial attack of the cyano group on the aromatic ring of the phenol.The efficiency of the photocycloaddition reaction varied with the position of the substituents, with the para-substituted ones giving the largest amount of photoproduct.
