| 对溴苯异氰酸酯的合成研究 |
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| 引用本文： | 施成进.对溴苯异氰酸酯的合成研究[J].丽水学院学报,2010,32(5):30-32. |
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| 作者姓名： | 施成进 |
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| 作者单位： | 丽水学院化学与生命科学学院,浙江,丽水,323000 |
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| 摘 要： | 研究以对溴苯胺和三光气为原料合成对溴苯异氰酸酯,重点讨论溶剂、反应温度、反应时间和原料配比等对合成工艺的影响。研究表明：以乙酸乙酯为溶剂,滴液温度-5～0℃,回流温度78℃,反应时间为5.0 h,三光气∶对溴苯胺=1∶2（摩尔比）,对溴苯异氰酸酯的收率可达90.4%。
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| 关 键 词： | 对溴苯异氰酸酯 三光气 对溴苯胺 合成 |
Synthesis of 4-Bromophenyl Isocyanate |
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| Shi Cheng jin.Synthesis of 4-Bromophenyl Isocyanate[J].Journal of Lishui University,2010,32(5):30-32. |
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| Authors: | Shi Cheng jin |
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| Institution: | Shi Cheng jin (College of Chemistry and Life Sciences,Lishui University,Lishui Zhejiang 323000,China) |
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| Abstract: | 4-Bromophenyl isocyanate was prepared from triphosgene and 4-bromoaniline.The effects of solvents,reaction temperature,reaction time and the mole ratio of raw materials on the yield of 4-bromophenyl isocyanate were studied.The optimum reaction conditions were obtained as follows： the solvent ethyl acetate,titration temperature-5~0℃,the refluxing temperature 78℃,the mole ratio of 4-bromoaniline to triphosgene 2∶1 and reaction time 4.5 h.The results of parallel tests showed that under such optimum condition the yield of 4-bromophenyl isocyanate could reach 90.4%. |
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| Keywords: | 4-bromophenyl isocyanate triphosgene 4-bromoaniline synthesis |
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