J. Ohkanda et al., N-HYDROXYAMIDE-CONTAINING HETEROCYCLES .7. PREPARATION AND PHOTOCHEMICAL BEHAVIOR OF 1-BENZYLOXY-2(1H)-PYRAZINONES, Heterocycles, 43(4), 1996, pp. 883-889
Synthesis of 1-benzyloxy-2(1H)-pyrazinones having substituents at C-5
and C-6 positions and their photochemical behavior have been studied.
Upon irradiation 1-benzyloxy-2(1H)-pyrazinones underwent N-O bond clea
vage in high quantum yields. The rearrangement of the benzyloxy group
to C-3 position of the ring and [2+2] cycloaddition were also observed
.