基于乙二胺衍生物的新型Zn-N金属配合物的合成、晶体结构和催化性能

Synthesis,Crystal Structure and Catalytic Properties of Novel Zn-N Metal Complexes Based on Ethylenediamine Derivatives

用N,N-二甲基乙二胺和N,N'-二苄基乙二胺为配体合成了两种新颖的Zn-N金属配合物[Zn(OAc)2L](L=N,N-二甲基乙二胺(1)、N,N'-二苄基乙二胺(2)),通过核磁氢谱、红外光谱、元素分析和X-射线单晶衍射等对其结构进行了表征和分析,研究了锌金属配合物催化芳香醛与硝基甲烷发生Henry反应的性能和反应条件对其的影响,探讨了在催化剂作用下不同芳香醛发生Henry反应的适用范围。结果表明,当以甲醇为溶剂、等物质量三乙胺介入的配合物1为催化剂、催化剂用量为25mol%时,配合物能够高效催化不同芳香醛与硝基甲烷的Henry反应。

Two novel Zn-N metal complexes [Zn（OAc）2L]（L = N,N-dimethylethylenediamine）（1）,N,N ＇-dibenzylethylenediamine（2）） were synthesized with N,N-dimethylethylenediamine and N,N ＇-dibenzylethylenediamine as ligand,and the structures were characterized and analyzed by1 H NMR,IR,elemental analysis and X-ray single crystal diffraction. The catalytic properties of the complexes in Henry reaction of aromatic aldehydes with nitromethane and the influences of the reaction conditions were studied,and the applicable scope of aromatic aldehydes in Henry reaction with complex as catalyst was discussed. The results show that the complexes can efficiently catalyze the Henry reaction of different aromatic aldehydes with nitromethane under the conditions as follows： methanol as solvent,complex 1 as catalyst mediated by equimolar triethylamine,and catalyst amount for 25mol%.