91540-11-3

Upstream product

• 36839-55-1 1,2-bis-(2-iodoethoxy)ethane 
• 91502-63-5 1,2-Bis-(2-phenylaminoethoxy)-ethan 
• 120-07-0 2,2'-(phenylimino)bis[ethanol] 
• 108-86-1 bromobenzene 
• 23978-55-4 1,4,10,13-tetraoxa-7,16-diazacyclooctadecane 
• 19249-03-7 triethylene glycol di-(p-toluenesulfonate) 
• 91540-16-8 1,2-di-(2-phenylaminoethoxy)ethane bishydrochloride 
• 62-53-3 aniline 
• 31255-09-1 3,6-dioxa-1,8-octanoyl dichloride 
• 91540-09-9 9,18-diphenyl-1,8-dioxo-3,6,12,15-tetraoxa-9,18-diazacycloocta-decane 

Downstream Products

• 144152-88-5 <4,4'-(1,4,10,13-Tetraoxa-7,16-diaza-cyclooctadecyl)-7,16-diphenyl>-bis-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-4-pyrazolyl-malononitril) 

Relevant academic research and scientific papers

N-aryl- and N-vinyldiaza-18-crown-6: Synthesis and complexing ability

The nucleophilic aromatic and vinyl substitution using diaza-18-crown-6 as nucleophile afforded a number of its N,N′-diaryl- [aryl = 2,4-(NO 2)2C6H3, 4-C5F 4N, 4-CF3C6

Silver Ion Selective Extraction with Dithiaza-, Tetrathiaza-, and Tetrathiadiazacrown Ether Derivatives

Dithiazacrown, tetrathiazacrown, and two tetrathiadiazacrown ether derivatives, bearing a phenyl group on each nitrogen atom at the periphery, were synthesized, and the solvent extractions of some transition metal ions with these compounds were carried out using an H2O-1,2-dichloroethane system.All of the thiazacrown compounds employed exhibited Ag+ selectivity, and formed 1:1:1 complexes of Ag+ : ligand : laurate ion as a counter anion to be extracted into a 1,2-dichloroethane solution.The extractabilities (extraction constants, Kex) for Ag+ decreased in the order: 7,16-diphenyltetrathia-7,16-diaza-18-crown-6 (3) (log Kex = 1.18+/-0.13) > 13-phenyltetrathia-13-aza-15-crown-5 (2) (0.75+/-0.09) > 7-phenyldithia-7-aza-9-crown-3 (1) (-0.47+/-0.06)>13, 16-diphenyltetrathia-13,16-diaza-18-crwon-6 (4) (-0.62+/-0.16).

Diphenyldiaza-18-krone-6-bis-pyrazoliden-acetonitril, ein neuer Chromoionophor Synthesen mit Nitrilen, 90.Mitt.

An improved synthesis of 7,16-diphenyl-1,4,10,13-tetraoxa-7,16-diaza-cyclooctadecan (5) is presented and the reaction with 4-dicyanomethylene-3-methyl-1-phenyl-2-pyrazolin-5-on to the colorless adduct 6 described.By heating or photolysis 6 can be converte

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.