M. Dauria et A. Vantaggi, PHOTOCHEMICAL REACTIVITY OF 9-VINYLADENINE WITH DIETHYL FUMARATE, Journal of heterocyclic chemistry, 31(2), 1994, pp. 375-376
The photochemical reaction between 9-vinyladenine (2) and diethyl fuma
rate (4) gave an unusual photoadduct, epimers 4 and 5, probably derive
d from attack of the vinyl group on N-3 and reaction of diethyl fumara
te on N-9 and N-6.