Synthesis of 2-Aryl[1,2,4]triazolo[5,1-<i>b</i>]benzoxazoles by Oxidative Cyclization of<i>N</i>-(Benzoxazol-2-yl)benzamidines
作者:T. Sambaiah、K. Kondal Reddy
DOI:10.1055/s-1990-26894
日期:——
The reaction of 2-aminobenzoxazoles with benzonitriles in the presence of anhydrous tin(IV) chloride gives N-(benzoxazol-2-yl)benzamidines in high yields. Cyclodehydrogenation of these compounds with lead(IV) acetate affords 2-aryl[1,2,4]triazolo[5,1-b]benzoxazoles in good yields.