Synthesis of the third comonomer of Kevlar 1414, p,p’-diaminophenylpiperazine was written by Hong, Youji;Xiao, Ruojian;Ye, Xiuzhen. And the article was included in Huadong Fangzhi Gongxueyuan Xuebao in 1985.Name: 4,4′-(Piperazine-1,4-diyl)dianiline This article mentions the following:
Piperazine [110-85-0] was treated with p-ClC6H4NO2 [100-00-5] in N-methylpyrolidone in the presence of CaH2 to give 1,4-bis(p-nitrophenyl)piperazine (I) [16264-05-4] with productivity <82.3%, compared with 57.9% without CaH2. I was refluxed with SnCl2, 95% EtOH, and concentrated HCl for 2 h to give 1,4-bis(p-aminophenyl)piperazine [7479-12-1] in 80.6% yield. In the experiment, the researchers used many compounds, for example, 4,4′-(Piperazine-1,4-diyl)dianiline (cas: 7479-12-1Name: 4,4′-(Piperazine-1,4-diyl)dianiline).
4,4′-(Piperazine-1,4-diyl)dianiline (cas: 7479-12-1) belongs to piperazine derivatives. Simple N-substituted piperazines have been found in many drug molecules. Piperazines are very broad chemical group, covering a wide range of drugs from antidepressants to antihistamines. The connecting property of all these chemicals is the presence of a piperazine functional group.Name: 4,4′-(Piperazine-1,4-diyl)dianiline
Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics