Na. Aljalal, PHOTOADDITION OF HYDROQUINONE TO BENZONITRILES - NOVEL ADDITION OF A CYANO GROUP TO THE AROMATIC RING OF HYDROQUINONE, Journal of chemical research. Synopses, (6), 1995, pp. 256-257
Hydroquinone undergoes photocycloaddition to benzonitrile, 4-methoxybe
nzonitrile, 4-methylbenzonitrile and 4-chlorobenzonitrile to give the
respective substituted 1,6-dihydroazocine-2,5-diones (5a-d) by initial
attack of the cyano group on the aromatic ring of the hydroquinone.