4- ethyl- N,N- bis(2- cyanoethyl)aniline was synthesized by using 4 -ethylaniline and acrylonitrile. The effects of solvents, AlCl3 quantity ,reaction temperature and reaction time on the yield of 4 - ethyl - N, N - bis(2 -cyanoethyl)aniline were studied. The result showed that AlCl3 was an excellent catalyst for the reaction with the yield of the aim target. The optimum conditions were that the quantity of AlCl3 was 30% of quality of 4 -ethylaniline with the reaction temperature 78 - 90℃ and the reaction time 8 hours. The physical propertys and structures of 4 - et...