A number of bis-2,1,3,4-boratriazaroles have been prepared by reacting boronic acids or their derivatives with bis-amidrazones and their properties studied.
Facile Syntheses of Bi-1,2,4-triazoles via hydrazonyl halides
作者:Ahmad S Shawali、Ahmad M Farag、Hassan A Albar、Kamal M Dawood
DOI:10.1016/s0040-4020(01)86352-3
日期:1993.3
Reaction of oxalodihydrazonyl dihalides 1 with sodium azide afforded the corresponding di-azides 2. Reduction of the latter with LiAlH4 yielded the diamidrazones 4 which react with acylhalides to give the bi-1,2,4-triazoles 5. The latter products were alternatively prepared by reaction of 2 with triphenylphosphine to give the phosphinimines 6 followed by treatment of the latter with acylhalides.