A Generalized and Efficient Synthesis of 3-Amino-, 3-(N-Alkylamino)-, 3-(N,N-Dialkylamino)-5-alkyl-1,2,4-oxadiazoles by Irradiation of 3-Alkanoylamino-4-phenyl-1,2,5-oxadiazoles (Furazans) - Buscemi, Silvestre; Vivona, Nicolò; Caronna, Tullio (Synthesis, 1995)