中文摘要：

以三苯基膦为母体骨架,设计合成了在苯环上连有环状仲胺取代基的五种新型P,N-配体（L1～L5）,利用核磁共振谱（1H,13C,31P）、红外光谱、高分辨质谱和X射线单晶衍射等对配体进行了表征,并将它们应用于Pd催化的C-N键偶联反应中.结果表明,三（2-吗啉基苯基）膦（L5）与三（二亚苄基丙酮）二钯（Pd2（dba）3）组成的体系可有效催化芳基溴代物与仲胺的偶联反应,当以Pd2（dba）3（1mol%）为催化剂前体、L5（6mol%）为配体、叔丁醇钠（1.4mmol）为碱、甲苯为溶剂时,溴代芳烃与仲胺的偶联反应在100oC下可顺利进行,最高分离收率达到95%.

英文摘要：

P,N-ligands（L1-L5） with cyclic secondary amine moieties linked to the benzene rings of triphenylphosphine were designed and synthesized for the palladium-catalyzed C-N bond coupling reactions.The structures of these new P,N-ligands were confirmed by 1H NMR,13C NMR,31P NMR,infrared,high resolution mass spectroscopy,and X-ray single crystal diffraction.The desired C-N bond coupling products were obtained in good to excellent yields（up to 95%） when the reactions of aryl bromides with secondary amines were performed under the optimized reaction conditions（Pd2（dba）3,1 mol%;L5,6 mol%;NaOtBu,1.4 mmol;toluene,2.5 ml;100 oC）.