应用化学 ›› 1987, Vol. 0 ›› Issue (6): 88-89.

• 研究简报 • 上一篇    下一篇

4,4′-四甲二氨基二苯甲烷的合成

林吉文, 魏春红   

  1. 华东工学院有机化学教研室, 南京
  • 收稿日期:1987-03-31 修回日期:1987-05-19 出版日期:1987-12-10 发布日期:1987-12-10

SYNTHESIS OF 4,4'-TETRAMETHYLDIAMINO-DIPHENYLMETHANE

Lin Jiwen, Wei Chunhong   

  1. East China Institute of Technology, Nanjing
  • Received:1987-03-31 Revised:1987-05-19 Published:1987-12-10 Online:1987-12-10

摘要: 4,4′-四甲二氨基二苯甲烷为染料的重要中间体与铅试剂,并且还是环氧树脂固化的优良促进剂。文献中虽不乏其合成方法的报导,诸如,以盐酸为催化剂的经典的Cohen法,过氧化二乙酰法,以及过苯甲酸叔丁酯法等,唯其或收率低,或反应时间长,或原料成本高,或操作复杂,均欠理想。本文为Cohen法的改进,采用草酸-盐酸为混合催化剂,使甲醛与N,N一二甲苯胺经缩合反应合成之,并经正交实验提出合成的最佳反应条件。结果表明在与Cohen法相同的反应时间内可得到高得多的收率,而且产品纯度高,操作简便,反应时间短。

Abstract: The synthetic method of 4,4'-tetramethyldiaminodiphenylmethane has been improved using oxalic acid and hydrochloric acid as catalysts. The Optimum reaction conditions of the synthesis are: (1) the molar ratio of N,N-dimethylaniline to formaldehyde: 1.7: 1, (2)weight of oxalic acld and hydrochloric acid:74% and 14% to the weight of N,N-dimethylaniline,respectively and (3)reaction time: 3 hours.