Hydride reduction of 4-nitro-1-phenylimidazole and 2-methyl-4-niho-1-phenyl
imidazole to the respective 1-phenyl-4-oximinoimidazolidines by metal hydri
des was studied under different conditions. 1-Aryl-4-oximinoimidazolidines
were hydrolyzed to the respective imidazolidinones. For a comparison hydrid
e reduction of 4-nitro-1-phenyl-pyrazole to the corresponding azoxy compoun
d was carried out too.