A process for producing arylhydroxylamines in high yield with minimal formation of by-product arylamines. A charge mixture is prepared comprising a nitroaryl compound, a platinum catalyst, a base, a sulfur compound, and a solvent for the nitroaryl compound. The sulfur compound is one in which divalent sulfur is bonded to two other moieties or a compound reducible to such divalent sulfur compound under catalytic hydrogenation conditions. Hydrogen is introduced into the mixture while the mixture is agitated at a temperature in a range of 0-40 °C thereby reducing the nitro group of the nitroaryl compound to the hydroxylamine group.
一种生产芳基
羟胺的工艺,产量高,副产物芳基胺的形成量极少。 制备一种由硝基芳基化合物、
铂催化剂、碱、
硫化合物和硝基芳基化合物溶剂组成的加料混合物。
硫化合物是二价
硫与两个其他分子键合的化合物,或者是在催化氢化条件下可还原成这种二价
硫化合物的化合物。 在0-40℃的温度范围内搅拌混合物时,向混合物中通入
氢气,从而将硝基芳基化合物的硝基还原成
羟胺基团。