作者:V. N. Yarovenko、V. Z. Shirinyan、I. V. Zavarzin、M. M. Krayushkin
DOI:10.1007/bf00699147
日期:1994.1
The reaction of amidoximes with cyanoguanidine in the presence of Lewis acids affords 3-substituted 5-guanidino-1,2,4-oxadiazoles. A study of the reaction of N-15-labeled chloroacetamidoxime with cyanoguanidine showed that the formation of the oxadiazole ring occurs via the elimination of the amino group from the amidoxime fragment. 1,2,4-Oxadiazoles bearing the imidazole or pyrimidine moiety were synthesized.