異羥肟酸(英語:Hydroxamic acid),也稱酰基羥胺,是具有-C(=O)-NH-OH結構的化合物,具弱酸性。可通過用為原料發生Angeli-Rimini反應,或以羥胺為原料製備:

R-C(=O)-Cl + H2NOH → R-C(=O)-NH-OH
R-C(=O)-OR' + H2NOH → R-C(=O)-NH-OH
異羥肟酸

異羥肟酸容易水解為羧酸和羥胺,可發生Lossen重排反應生成異氰酸酯

異羥肟酸及衍生物可用作螯合劑、礦物浮選劑及用於鑑定金屬離子。

參見

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