All articles of this category Several aromatic N -oxides such as pyrazine, arylpyridine and quinoline N -oxides have been deoxygenated to parent amines under mild and efficient conditions using zinc and aqueous ammonium chloride in tetrahydrofuran. zinc - ammonium chloride - deoxygenation - aromatic N -oxide - pyrazine N -oxide
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Aoyagi et al. (1997) studied this question.