3,5,3′,5′联苯四甲酸金属配合物合成与表征

Synthesis and Characterization of Biphenyl-3,5,3′,5′-tetracarboxylicacid

以间苯二甲酸为原料经硝化、还原和重氮化-偶联反应合成目标化合物,并对硝化、还原和重氮化-偶联反应条件进行了优化.通过改变原料的配比和反应的温度、时间得到了各步反应的最佳反应条件和最佳比.间苯二甲酸经硝化、还原反应合成了5-氨基间苯二甲酸.再经重氮化-偶联反应合成目标化合物,总收率>63.2%(以间苯二甲酸计).另本文研究合成了目标产物的5种金属配合物.3,5,3′,5′-联苯四甲酸作为对称芳烃多元羧酸在高分子领域有着广泛的应用.

3,3＇, 5,5＇-Biphenyhetraacid is synthesized from isophthalic acid via nitration, deoxidization and diazotization coupling. The synthetic conditions, such as raw material ratio,reaction temperature and reaction time of nitration, deoxidization and diazotization-coupling are optimized. Firstly 5-stain oisophthalie acid is prepared from isophthalic acid via nitra-tion and deoxidization. Then 3,3＇, 5,5＇-biphenyhctraacid is obtaiced by the coupling of diazoum which is made from the diazotization of 5-aminoisophthalicacid. Total yield based on isophthal-ic acid is over 65.2%. Cooperated with five metal ions,this route runs at mild reaction condition with hilgh yields and has good industrial application potential.