铜双季铵盐蒙脱土催化卤代芳烃与氨水的偶联
收稿日期: 2017-05-30
修回日期: 2017-06-28
网络出版日期: 2017-08-30
基金资助
国家自然科学基金(No.21303139)资助项目.
Copper Montmorillonite Modified by Biquaternary Ammonium Salts for Coupling of Aryl Halides with Aqueous Ammonia
Received date: 2017-05-30
Revised date: 2017-06-28
Online published: 2017-08-30
Supported by
Project supported by the National Natural Science Foundation of China (No. 21303139)
杨琴 , 郎文成 , 宋雪平 , 尹梦云 , 周丽梅 . 铜双季铵盐蒙脱土催化卤代芳烃与氨水的偶联[J]. 有机化学, 2017 , 37(11) : 3000 -3005 . DOI: 10.6023/cjoc201705044
Two kinds of different spacer biquaternary ammonium salts N1,N3-dibenzyl-2-hydroxy-N1,N1,N3,N3-tetra-methylpropane-1,3-diaminium dichloride (Q1) and N1,N6-dibenzyl-N1,N1,N6,N6-tetramethylhexane-1,6-diaminium dibromide (Q2) were prepared to modify montmorillonite (MMT). Copper was loaded on the modified MMT by the impregnation reduction method to form two kinds of catalytic materials Cu-Q1-MMT and Cu-Q2-MMT. They were applied to the coupling of aryl halides and aqueous ammonia. It was found that they were high active and selective catalysts for the coupling of aryl halides with aqueous ammonia under mild conditions without inert gas protection. Compared with Cu-Q1-MMT, Cu-Q2-MMT showed a higher catalytic activity. In addition, it could be separated easily and reused for 17 consecutive runs without significant loss in catalytic activity.
Key words: organo-montmorillonite; Cu catalyst; coupling; aqueous ammonia; aryl halide
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