| 4,4'-双(氯甲基)联苯的合成 |
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| 引用本文： | 李光才.4,4'-双(氯甲基)联苯的合成[J].化学世界,2000,41(5):259-261,275. |
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| 作者姓名： | 李光才 |
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| 作者单位： | 青岛化工学院精细化工研究所，山东 青岛 266042 |
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| 摘 要： | 研究了 4,4′-双 (氯甲基 )联苯 ( BCMB)的合成方法及工艺条件。以多聚甲醛、联苯、氯化氢气体为原料 ,氯化锌为催化剂 ,经氯甲基化反应合成 BCMB,最佳工艺条件 :多聚甲醛∶联苯∶氯化锌 =2 .1～ 2 .3∶ 1∶ 1.68(摩尔比 ) ,氯化锌∶水 =2 .8(质量比 ) ,反应温度 5 6～ 60°C,反应时间 5 h。产品熔点 12 7-13 3°C,收率 (以联苯计 )达 48%。
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| 关 键 词： | 多聚甲醛 联苯 氯甲基化 4 4'-双(氯甲基)联苯 |
| 文章编号： | 0367-6358(2000)05-0259-04 |
Synthesis of 4,4'-Bis(chloromethyl) biphenyl |
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| Abstract: | Synthetic method and technical conditions for BCMB were studied. The title compound was prepared by chloromethylation of biphenyl with paraformaldehyde and gaseous HCl with ZnCl 2 as catalyst. The synthetic conditions were paraformaldehyde∶ biphenyl= 2.1 ~2.3(molar ratio); ZnCl 2∶biphenyl=1.68(molar ratio); ZnCl 2∶H 2O=2.8(weight ratio), temperature of reaction: 58~60°C, time of reaction: 5 hours, yield of BCMB was 48% based on biphenyl. |
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| Keywords: | paraformaldehyde biphenyl chloromethylation 4 4′ bis(chloromethyl) biphenyl |
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