Na. Aljalal et al., LIGHT-INDUCED [2-METHOXY-2-NAPHTHONITRILE TO 2-CHLOROACRYLONITRILE(2]CYCLOADDITION OF 6), Journal of chemical research. Synopses, (12), 1994, pp. 452-452
6-Methoxy-2-naphthonitrile undergoes photocycloaddition to 2-chloroacr
ylonitrile to give [2 + 2] cyclobutane adducts (1a and 1b), the struct
ure of one of which (1a) has been unambiguously confirmed by an X-ray
structural analysis.