1-(4-甲苯基)-2-(4-氨基苯基)乙烯的合成

1 (4 甲苯基) 2 (4 氨基苯基)乙烯是合成苯乙烯基三芳胺类空穴传输材料的一种重要中间体。该文以4 甲基氯化苄与三苯基膦反应制备成Wittig试剂,再与4 硝基苯甲醛反应得到1 (4 甲苯基) 2 (4 硝基苯基)乙烯,然后经还原得到目的产物。通过考察还原剂、反应物浓度和反应时间对产物收率的影响得到最佳反应条件:温度95～100℃,n(铁粉)/n(硝基化合物)=5,硝基化合物浓度为0 27mol/L,反应时间为7h,收率达到78 6%。

Synthesis of 1 - ( 4-Methylphenyl ) -2- ( 4-aminophenyl ) ethylene

1-(4-Methylphenyl)-2-(4-aminophenyl)ethylene is one of the important intermediates for preparing hole transport materials of styryl triarylamines.In this paper,the objective compound was synthesized through the reaction of 4-nitrobenzaldehyde with the Wittig reagent prepared from 4-methylbenzyl chloride and triphenylphosphine and reduction of the resulting 1-(4-methylphenyl)-2-(4-nitrophenyl)ethylene.The influencing factors of reduction were studied and the optimum reaction conditions were obtained.Thus, the reaction was carried out at 95～100 ℃ for 7 h with n (Fe)/ n (nitro-compound)=5 and the nitro-compound of 0 .27 mol/L to get the highest yield of 78 .6%.