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贝尚反应

贝尚反应（Béchamp reaction）指芳香酚或胺用砷酸处理时，发生胂化作用得到对羟基苯胂酸和对氨基苯胂酸的衍生物。[1][2][3][4]

贝尚反应
贝尚反应

也会产生非常少量的邻位取代产物。

除了苯系外，萘衍生物一般很难发生贝尚反应。

用于芳香有机砷化合物（如罗沙胂）的制取。

反应机理

类似于磺化反应，但胂化反应需要活泼氢原子，因此不如磺化反应普遍。

贝尚反应机理
贝尚反应机理

参见

参考资料

  1. ^ A. J. Béchamp, Compt. Rend., 56, 1172 (1863).
  2. ^ P. Ehrlich and A. Bertheim, Ber., 40, 3292 (1907).
  3. ^ H. P. Brown and C. S. Hamilton, J. Am. Chem. Soc., 56, 151 (1934).
  4. ^ C. S. Hamilton and J. F. Morgan, Organic Reactions II, pp 415, 428 (New York, 1944)
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贝尚反应
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