91540-10-2

Upstream product

• 31255-10-4 1,2-bis-(2-bromo-ethoxy)-ethane 
• 91540-08-8 triglycolic acid di-(2-p-tolylamino)anilide 
• 31255-09-1 3,6-dioxa-1,8-octanoyl dichloride 
• 91755-59-8 1,2-di<2-<2-(p-tolylamino)anilino>ethoxy>ethane 
• 3624-90-6 N-tosyl-1,2-diaminobenzene 

Downstream Products

• 91540-14-6 7,16-di<2-(3-carboxypropionylamino)>phenyl-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane 
• 91540-13-5 7,16-di<2-(amino)phenyl>-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane 
• 91540-12-4 7,16-di<2-(p-tolylamino)phenyl>-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane 

Relevant academic research and scientific papers

THE INFLUENCE OF SIDE-CHAINS ON THE COMPLEXATION OF CATIONS BY CROWNS. SYNTHESIS AND Cu(II) COMPLEXATION OF N,N'-DIARYL-DIAZA-18-CROWN-6

Various N,N'-diaryl derivatives of 1,4,10,13-tetraoxa-7,16-diazacyclooctadecane were synthesized. 7,16-diphenyl-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane had only a low affinity for cations.On the contrary, diamide derivatives of 7,16-di-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane were deprotonated by Cu(II) and formed stable chelates.Spectral data suggest that monodeprotonation gives dissymmetric 1:1-complexes and dideprotonation gives symmetric 1:1-complexes.