Tris (4 - Aminophenyl) Ester And Its Derivatives, Synthesis And Characterization

Tris(4-aminophenyl) thiophosphate and its relative derivatives were synthesized and the optimum reaction conditions were selected in this paper. The products were characterized and analyzed by IR, NMR, MS and HPLC. Two methods were taken to synthesize the tris(4-aminophenyl)thiophosphate: One is amide-hydrolyzing process, the other is one-step reaction. The harmful gas was reduced by the improvement of the experimental apparatus. The optimal condition of reaction was built up through optimum of the time, temperature and material proportion of reaction. Then, the yield of reaction was improved to 84% and 70% separately. By the further study of the experiment, the results show that adding a small amount of pyridine into triethylamine can improve the yield of the reaction effectively. Besides, the derivatives were synthesized successfully by the similar acid binding agent system, such as tris(4-nitrophenyl) thiophosphate, tris(4-toluene)thiophosphate. The derivative of maleic anhydride was synthesized by the simple method, and its yield was above 90%.