Mesoionic oxadiazolium-olates and oxatriazolium-olates from aryl isocyanides and nitroform
Abstract
Nitroform converted p-nitrophenyl isocyanide into the mesoionic 3-p-nitrophenyl-1,2,3-oxadiazolium-5-olate (2) and 3-p-nitrophenyl-1,2,3,4-oxatriazolium-5-olate (3), together with p-nitroaniline; it converted p-tolyl isocyanide into the mesoionic 3-(2-nitro-4-methylphenyl)-1,2,3-oxatriazolium-5-olate together with 2-nitro-4-methylaniline and p-methylaniline.