第 46 卷第 2 期 | ![](image2/wentou.gif) | Vol. 46 No. 2 | 2016 年 4 月 | Apr 2016 |
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所属栏目:功能材料
2,7-二溴-N-苯基咔唑的合成 |
张海涛,左洪亮
(中昊(大连)化工研究设计院有限公司,辽宁 大连 116023) |
摘 要:以4,4′-二溴联苯为原料,经硝化、闭环以及N-芳基化,3步反应合成目标产物2,7-二溴-N-苯基咔唑。硝化反应使用混酸作为硝化试剂,n(HNO3)∶n(H2SO4)∶n(4,4′-二溴联苯)=1.3∶2.0∶1.0;闭环反应使用邻二氯苯为溶剂;N-芳基化反应使用碘化亚铜为催化剂。目标产物总收率53.7%。 |
关键词:咔唑;硝化反应;环化反应;N-芳基化反应 |
中图分类号:TQ251 文献标识码:A 文章编号:1009-9212(2015)06-0062-03 |
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Synthesis of 2,7-Dibromo-N-benzyl-9H-carbazole |
ZHANG Hai-tao, ZUO Hong-liang
(China Haohua(Dalian) Research &Design Institute of Chemical Industry Co., Ltd., Dalian 116023, China) |
Abstract:The synthesis of 2,7-dibromo-N-benzyl-9H-carbazole was achieved from a three-step process including nitration, cyclization and N-arylation. Nitration of 4,4′-dibromobiphenyl was achieved using n(HNO3):n(H2SO4):n(4,4′-dibromobiphenyl)=1.3:2.0:1.0; cyclization was completed using o-dichlorobenzene as solvent; N-arylation was processed using CuI as catalyst. The yield of target product-2,7-dibromo-N-benzylcarbazole is of 53.7%. |
Key words:carbazole; nitration; cyclization; N-arylation |
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作者简介:张海涛(1979-),男,山东潍坊人,高级工程师,研究方向:紫外线吸收剂合成(E-mail:13940807910@163.com)。
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收稿日期: 2016-04-0
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