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2,7-二溴-N-苯基咔唑的合成 被引量：1

Synthesis of 2,7-Dibromo-N-benzyl-9H-carbazole
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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(HNO_3)∶n(H_2SO_4)∶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%。 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%.
作者 张海涛 左洪亮
机构地区 中昊(大连)化工研究设计院有限公司
出处 《精细化工中间体》 CAS 2016年第2期62-64,72,共4页 Fine Chemical Intermediates
关键词 咔唑 硝化反应 环化反应 N-芳基化反应 carbazole nitration cyclization N-arylation
分类号 TQ251 [化学工程—有机化工]
  • 相关文献

参考文献15

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共引文献22

同被引文献12

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精细化工中间体
2016年 第2期

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