催化溴化邻硝基甲苯合成邻硝基苯甲醇的研究

研究了邻硝基甲苯经催化溴化合成邻硝基苯甲醇工艺。发现使用二（２ 乙基己基）过氧二碳酸酯催化剂，在邻硝基甲苯与溴摩尔比２∶１、溴化温度６４～６６℃、溴化时间２ｈ和水解时间１６ｈ的优化工艺条件下，能获得８０％收率和９５％以上纯度的邻硝基苯甲醇粗品。

Study on Catalytic Bromination of 2-Nitrotoluene to 2-Nitrobenzyl Alcohol

A new process was developed to synthesize 2 nitrobenzyl alcohol from 2 nitrotoluene by catalytic bromination.The yield of 2 nitrobenzyl alcohol was 80% and the purity above 95% by using di(2 ethyl hexyl)peroxy dicarbonate catalyst under the optimum reaction condition,i.e. the molar ratio of 2 nitrotoluene to bromine was 2∶1,the bromination temperature was 64～66℃,the bromination time and the hydrolysis time were 2h and 16h respectively.