N-杂环卡宾钯金属化合物的合成、表征及催化性能被引量：1

Synthesis,characterization and catalysis of N-heterocyclic palladium complex

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摘要合成了对二氯[1,3-二(2,6-二甲基苯基)-4,5-二氢咪唑基卡宾].吡啶基钯化合物,对此化合物合成方法进行了详细的描述,并用核磁共振波谱、单晶X射线法、元素分析等对其进行了全面的表征.晶体属于三斜晶系,空间群P-1,a=1.4567(2)nm,b=1.6522(3)nm,c=2.2133(4)nm,α=92.58(3)°,β=92.28(3)°,γ=93.29(3)°,Mr=1161.71,V=5.3079(18)nm3,Dc=1.396,Z=2,F(000)=1138.并首次将该化合物用于C-S偶联的催化研究,发现它可以有效地催化卤代苯与苯硫酚的反应,特别是可以催化活性低的氯苯与苯硫酚的反应.反应中溴苯和碘苯的催化效率比氯苯高. Trans-[1,3-bis（2,6-dimethylphenyl）-4,5-dihydroimidazolylidene]PdCl2（pyridine） has been prepared. The method of preparation is given in detail.The complex was fully characterized by NMR,X-ray and EA. The X-ray molecular structure of the complex is reported. The crystal is triclinic,space group P-1 with a=1.456 7（2） nm,b=1.652 2（3） nm,c=2.213 3（4） nm,α=92.58（3）°,β=92.28（3）°,γ=93.29（3）°,Mr=1 161.71,V=5.307 9（18） nm3,Dc=1.396,Z=2,F（000）=1 138. For the first time,the complex has been tested in the cross-coupling reaction of phenylhalides（iodide,bromide,chloride） with phenylthiol to afford thioether,and it was found to be catalytically active in this C-S reaction. The coupling of bromo-and iodobenzene are more efficient than chlorobenzene in corresponding reactions.

作者丁璐瑶梁春红蔡正元刘祥曹昌盛史延慧

机构地区徐州师范大学化学化工学院

出处《徐州师范大学学报（自然科学版）》 CAS 2010年第3期60-62,69,共4页 Journal of Xuzhou Normal University(Natural Science Edition)

基金江苏省教育厅"青蓝工程"基金资助项目(08QLD006 08QLT001) 徐州师范大学基金资助项目(KY2008104 KY2008103 09XLY02 XSKT2010075)

关键词 N-杂环卡宾钯金属化合物碳-硫偶联 N-heterocyclic palladium complex C-S coupling

分类号 O621.258 [理学—有机化学]

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