Photochemical isomerization of aryl hydrazones of 1,2,4-oxadiazole derivatives into the corresponding triazoles.
The photochemical version of the Boulton-Katritzky reaction has been studied, examining the behaviour of the arylhydrazones of 3-benzoyl-5-X-1,2,4-oxadiazoles. The effect of several modifications of the substrates structure (the E and/or Z structures of arylhydrazones, the possible presence of substituents in the arylhydrazono moiety, and the nature of substituents at C-5 of the 1,2,4-oxadiazole ring) on the course of the photochemical rearrangement has been examined.
Dipartimento di Chimica A M Tamburro, Università della Basilicata, Potenza, Italy. maurizio.dauria@unibas.it
Maurizio
M
D'Auria
Vincenzo
V
Frenna
Salvatore
S
Marullo
Rocco
R
Racioppi
Domenico
D
Spinelli
Licia
L
Viggiani