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Synthesis of sterically hindered 1-hydroxy-2-acetyl-3-imidazoline 3-oxides and stable nitroxyl radicals from them
Authors:S A Amitina  L B Volodarskii
Institution:1. Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Academy of Sciences of the USSR, USSR
2. Novosibirsk State University, USSR
Abstract:
1.  The condensation of 1,2-hydroxylamino oximes with biacetyl leads to 1-hydroxy-2-acetyl-2,4,5,5-tetrasubstituted 3-imidazoline 3-oxides.
2.  When 1-hydroxy-2-acetyl-2,5,5-trimethyl-4-phenyl-3-imidazoline 3-oxide is oxidized the CH3CO group is cleaved to give the 5H-imidazole 1,3-dioxide.
3.  Stable nitroxyl radicals were obtained when the 1-hydroxy-2-oximiaoethyl-2,4,5,5-tetrasubstituted 3-imidazoline 3-oxides are oxidized.
Keywords:
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