Cu(I) catalysts {[Cu(L¹⁻⁴)Cl(PPh₃)] where L¹⁻⁴ = condensed product of 2-(1-phenylhydrazinyl)-pyridine with different benzaldehydes} were synthesized, characterized by ¹H, ³¹P NMR, UV–Vis and IR techniques. Complex 2 structure was authenticated by single crystal X-ray method. Different electron donating and withdrawing substituents are present in the ligand frame of Cu(I) catalysts and their role on Sonogashira reaction was investigated. The efficiency order of catalysts for the coupling reaction was found to be 2 > 1>3 > 4, clearly indicated the role of substituents present in the ligand frame was useful to effectively catalyze the Sonogashira reaction. The products were characterized using ¹H and ¹³C NMR.

合成了Cu（I）催化剂{[Cu（L ^1-4）Cl（PPh ₃）]，其中L ^1-4  = 2-（1-苯基肼基）-吡啶与不同的苯甲醛的缩合物}，其特征在于¹ H，³¹ P NMR，UV-Vis和IR技术。复合物2的结构通过单晶X射线法进行了鉴定。Cu（I）催化剂的配体框架中存在不同的给电子和吸电子取代基，并研究了它们在Sonogashira反应中的作用。发现偶联反应催化剂的效率顺序为2  >  1 > 3  >  4清楚地表明存在于配体框架中的取代基的作用对于有效催化Sonogashira反应是有用的。使用¹ H和¹³ C NMR表征产物。