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3,4-二氨基呋咱的乙酰化及酰化产物的硝解

Keywords: 3,4-二氨基呋咱,3-乙酰胺基-4-硝酰胺基呋咱,3-乙酰胺基呋咱,乙酰化

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Abstract:

以3,4-二氨基呋咱为反应物,对其酰化反应、酰化产物的硝解反应及其产物的重排分解反应进行了研究.在对甲苯磺酸的催化下,以3,4-二氨基呋咱为反应物,用乙酸和乙酸酐为酰化试剂分别得到了3-氨基-4-乙酰胺基呋咱和3,4-二乙酰胺基呋咱,反应时间分别为3h和10min时产率最大,分别为78%和89%;在硝酸-醋酐硝化体系中对3,4-二乙酰胺基呋咱进行了硝解反应,得到化合物3-乙酰胺基-4-硝酰胺基呋咱,反应温度在0~-5℃时得率较大,为54%;在微量酸存在下,在溶剂四氢呋喃中3-乙酰胺基-4-硝酰胺基呋咱可发生重排分解生成3-乙酰胺基呋咱.

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