135299-10-4Relevant academic research and scientific papers
Synthesis of N,N',N'-tri(3,5-dinitro benzenesulfonyl)-1,4,7- triazacyclononane and N,N',N'-tri(3,5-diamino benzenesulfonyl)-1,4,7- triazacyclononane
Gao, Jinzhang,Feng, Yafei,Kang, Jingwan
, p. 3219 - 3225 (1997)
An easy three step synthesis of N, N', N'-tribenzenesulfonyl-1,4,7- triazacyclononane (I) was carried out in good yields and short reaction times starting from diethylenetriamine, 1,2-ethandiol and benzene sulfochloride. The first synthesis of nitro and amino derivatives of I was reported in detail.
A paper pulp, fabric bleaching catalyst preparation method of the ligand
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Paragraph 0016-0017, (2017/03/17)
The invention discloses a preparation method of a catalyst ligand for bleaching paper pulp and textile in low temperature. The preparation method comprises following main steps: dissolving diethylenetriamine containing sulfonyl groups in an organic solvent, adding an alkaline reagent and ethylene glycol diacetate, subjecting the mixture to reactions for 6 to 20 hours at the temperature of 80 to 150 DEG C, cooling to the room temperature after the reactions finish, and then filtering to obtain 1,4,7-trisulfonyl-1,4,7-triazacyclononane; adding 1,4,7-trisulfonyl-1,4,7-triazacyclononane in sulfuric acid, stirring for 2 to 12 hours at the temperature of 80 to 130 DEG C, adding in alkali to neutralize after cooling, adding formaldehyde and formic acid, and performing reflux to obtain 1,4,7-trimethyl-1,4,7-triazacyclononane. The preparation method is simple, has the advantages of available materials, and less waste gas, waste water and waste residues, is suitable for industrial production and meets the environmental protection requirements of industry production.
