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organic compounds
The treatment of 4-nitroimidazoles with an excess of sodium borohydride in the presence of sodium methoxide yields the (Z)-oximes of 4-imidazolidinones. The title compound, 1-phenyl-4-imidazolidinone (Z)-oxime, C9H11N3O, is a coplanar molecule despite the saturation of the hetero ring.