cas 59945-35-6, N,N'-[1,2-Ethanediylbis(oxy-2,1-ethanediyl)]bis[4-methyl-benzenesulfonamide

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Synthesis and antibacterial evaluation of some novel imidazole and benzimidazole sulfonamides
Several new substituted sulfonamide compounds were synthesized and their structures were confirmed by 1H-NMR, 13C-NMR, FT-IR, and mass spectroscopy. The antibacterial activities of the synthesized compounds were screened against stan
Al-Mohammed, Nassir N.,Alias, Yatimah,Abdullah, Zanariah,Shakir, Raied M.,Taha, Ekhlass M.,Hamid, Aidil Abdul
p. 11978 - 11995
(2013/11/06)

Convenient synthesis of large tetraazamacrocycles bearing alkylene, cyclophane and crown ether type skeletons
A series of large tetraazamacrocycles with 28- to 44-membered rings consisting of alkylene, phenylene or ether type backbones has been prepared without the use of high-dilution conditions in practically significant yields (25-42%). The reaction can be car
Tomohiro,Ahmadi Avval,Okuno
p. 639 - 640
(2007/10/02)

MACROHETEROCYCES. XXXVI. A CONVENIENT METHOD FOR SYNTHESIS OF DI- AND POLYAZACROWN ETHERS
A method is proposed for the production of di- and polyazacrown ethers by the condensation of bissulfonamides with dibromides or ditosyloxy derivatives in a two-phase aqueous alkali-toluene (benzene) system.The optimum concentration range for the substrate and the alkylating agent is 0.017-0.1 M.The catalytic activity of the quaternary ammonium salts decreases in the order (Bu)4NI > (Bu4)NBr > (Bu4)NCl > (Bu4)NHSO4 > (C2H5)3C6H5CH2NCl >> (Et)4NI > (Et)4NBr.The highest yields of te 12-membered azacrown ethers are obtained in the presence of lithium hyroxide, and the largest yields of the crown ethers with larger ring sizes are obtained in the presence of sodium or potassium hydroxide, and this is probably due to the matrix effects of the cation.
Luk'yanenko, N.G.,Basok, S.S.,Filonova, L.K.
p. 1562 - 1571
(2007/10/02)

MACROHETEROCYCLES. PART 44. FACILE SYNTHESIS OF AZACROWN ETHERS AND CRYPTANDS IN A TWO-PHASE SYSTEM
A facile procedure is proposed for the preparation of azacrown ethers and cryptands by condensation of dibromides or ethylene glycol bis(toluene-p-sulphonate)s with acyclic bis(sulphonamide)s or with bisdiazacrown ethers, respectively.The reaction was carried out in a two-phase system of aqueous alkali-toluene (benzene)in the presence of quaternary ammonium salts as phase transfer catalysts.The catalytic activity decreased in the sequence: Bu4NI ca.Bu4NBr > Bu4NCl > Bu4NHSO4 > Et3NCH2C6H5NCl.Maximum yields of twelve-membered azacrown ethers are obtained when lithium hydroxide is used, while crown ethers of larger size are observed in the presence of sodium or potassium hydroxides; this may be due to a template effect.
Lukyanenko, Nikolai G.,Basok, Stepan S.,Filonova, Lyubov K.
p. 3141 - 3148
(2007/10/02)

A VERSATILE ONE-POT SYNTHESIS OF SYMMETRICAL N-TOSYLAZAMACROCYCLES
A variety of title compounds (azacrown ethers, pyridino-azacrown analogues and azacyclophanes) have been synthesized in moderate to good yield by coupling appropriate bis(halomethyl) or bis(tosylate ester) precursors with tosylamide monosodium salt.A revised mechanism is proposed.
Pappalardo, Sebastiano,Bottino, Francesco,Grazia, Michele Di,Finocchiaro, Paolo,Mamo, Antonino
p. 1881 - 1884
(2007/10/02)