245125-18-2Relevant academic research and scientific papers
Selective chromogenic response via regioselective binding of cations: A novel approach in chemosensor design
Ataman, Demet,Akkaya, Engin U.
, p. 3981 - 3983 (2002)
A calixdiquinone bis-indoaniline derivative with two kinds of potential binding sites, discriminates cations according to their charge/size ratio. Harder and highly oxophilic Eu(III) preferentially interacts with the lower rim quinone oxygens; whereas Na(
Copper(II)-catalyzed enantioselective intramolecular cyclization of N-alkenylureas
Fu, Shaomin,Yang, Honghao,Deng, Yuanfu,Jiang, Huanfeng,Zeng, Wei,Li, Guoqiang
, p. 1018 - 1021 (2015/03/30)
The first Cu(II)-catalyzed highly enantioselective intramolecular cyclization of N-alkenylureas was developed for the concise assembly of chiral vicinal diamino bicyclic heterocycles. Facile removal of carbonyl group of the carbamido moiety allowed for ready access to enantioenriched cyclic vicinal diamines.
Selective colorimetric detection of Hg2+ and Mg2+ with crown ether substituted N-Aryl-9-aminobenzo[b]quinolizinium derivatives
Tian, Maoqun,Ihmels, Heiko
experimental part, p. 4145 - 4153 (2011/10/04)
1,4-Dioxa-7,13-dithia-10-azacyclopentadecane (AT215C5) or 1,4,7,10-tetraoxa-13-azacyclopentadecane (A15C5) were attached as metal-ion-binding receptor units at the ortho or para positions of the 9-amino-N-phenylbenzo[b]quinolizinium chromophore
Nitro derivatives of N-alkylbenzoaza-15-crown-5: Synthesis, structures, and complexation with metal and ammonium cations
Dmitrieva,Churakova,Kurchavov,Vedernikov,Kuz'Mina,Freidzon, A. Ya.,Bagatur'Yants,Strelenko, Yu. A.,Howard,Gromov
experimental part, p. 1192 - 1206 (2011/02/23)
A number of N-alkylnitrobenzoaza-15-crown-5 with the macrocycle N atom conjugated with the benzene ring were obtained. The structural and complexing properties of these compounds were compared with those of model nitrobenzo- and N-(4-nitrophenyl)aza-15-cr
Triaminophosphine ligands for carbon-nitrogen and carbon-carbon bond formation
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Page/Page column 13-14; 17, (2008/12/05)
Methods and compounds are provided for the formation of carbon-nitrogen or carbon-carbon bonds comprising reacting an amine or an aryl boronic acid with an aryl halide in the presence of a palladium catalyst, a base, and a compound of formula II:
Synthesis of N-aryl-aza-crown ethers via Pd-catalyzed amination reactions of aryl chlorides with aza-crown ethers
Urgaonkar, Sameer,Verkade, John G.
, p. 11837 - 11842 (2007/10/03)
The Pd2(dba)3/P(i-BuNCH2CH 2)3N (1) catalyst system effectively catalyzes the coupling of aza-crown ethers with electronically diverse aryl chlorides, affording N-aryl-aza-crown ethers in good yields. The Pd2(dba) 3/P(i-BuNCH2)3CMe (2) catalyst system containing the more constrained bicyclic triaminophosphine is useful for aryl chlorides possessing base-sensitive ester, nitro, and nitrile functional groups. Graphical Abstract
Synthesis of novel crowned salicylaldimine schiff bases
Zeng, Wei,Mao, Zhihua,Li, Jianzhang,Qin, Shengying
, p. 1011 - 1014 (2007/10/03)
Salicylaldimine Schiff bases containing oxa-crown ether (HL1, HL2, HL3, HL4 and H2L5) were synthesized via condensation of (15-crown-5) salicylaldehyde with amino-compound and characterized by 1H NMR, IR, MS spectroscopy and elemental analysis. The crystal structures of HL2 were determined from X-ray diffraction data.
Palladium-catalyzed synthesis of N-aryl- and N-heteroaryl-aza-crown ethers via cross-coupling reactions of aryl- and heteroaryl bromides with aza-crown ethers
Witulski, Bernhard
, p. 1223 - 1226 (2007/10/03)
Palladium(0)-catalyzed cross-coupling reactions of electron deficient aryl- and heteroaryl bromides with aza-crown ethers of various ring sizes are described. The catalyst system Pd(OAc)2/PPh3 gave best results for cross coupling reactions of macrocyclic aza-crown ethers with electron poor aryl bromides.
