[EN] METHODS FOR THE SYNTHESIS OF BIS (TRIAZACYCLONONANE) LIGANDS<br/>[FR] PROCÉDÉS POUR LA SYNTHÈSE DE LIGANDS À BASE DE DI(TRIAZACYCLONONANE)
申请人:UNILEVER PLC
公开号:WO2012003599A1
公开(公告)日:2012-01-12
The present invention provides an improved process to synthesize bis(triazacyclononane) ligands, in which 1,4-di(arylsulfonate)-1,4,7-triazacyclononane is reacted with dihaloethane to produce 1,2-bis(4,7-diarylsulfonate-1,4,7-triazacyclonon-1-yl)-ethane, which is deprotected in an acidic medium to provide 1,2-bis(1,4,7-triazacyclonon-1-yl)-ethane, and then 1,2-bis(1,4,7-triazacyclonon-1-yl)-ethane is further reacted with formaldehyde and formic acid in one-pot reaction to yield 1,2-bis(4,7-dimethyl-1,4,7-triazacyclonon-1-yl)-ethane.
本发明提供了一种改进的合成双三氮杂环壬烷配体的方法,其中将1,4-二(芳基磺酸酯)-1,4,7-三氮杂环壬烷与二卤代乙烷反应,生成1,2-双(4,7-二芳基磺酸酯-1,4,7-三氮杂环壬-1-基)-乙烷,然后在酸性介质中去保护,得到1,2-双(1,4,7-三氮杂环壬-1-基)-乙烷,随后1,2-双(1,4,7-三氮杂环壬-1-基)-乙烷进一步与甲醛和甲酸在一锅反应中反应,得到1,2-双(4,7-二甲基-1,4,7-三氮杂环壬-1-基)-乙烷。