- Method for separating N,N,N'-trimethylbisaminoethylether and/or N,N-dimethylbisaminoethylether from a mixture
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The present invention relates to a method for separating N,N,N'-trimethylbisaminoethylether and/or N,N-dimethylbisaminoethylether, from a mixture A comprising N,N,N'-trimethylbisaminoethylether, and N,N-dimethylbisaminoethylether, wherein said method comprises the steps of: (a) contacting said mixture A with an acylating agent, to form a mixture B comprising the amides of N,N,N'-trimethylbisaminoethylether and of N,N-dimethylbisaminoethylether, respectively; and (b1) separating the amide of N,N,N'-trimethylbisaminoethylether from mixture B; and (c1) recovering N,N,N'-trimethylbisaminoethylether from its amide by means of a transamidation reaction; and/or (b2) separating the amide of N,N-dimethylbisaminoethylether from mixture B; and (c2) recovering N,N-dimethylbisaminoethylether from its amide by means of a transamidation reaction.
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Paragraph 0159; 0160; 0161; 0162
(2015/05/05)
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- Construction of a mixed valence trinuclear Mn(II)Mn(III)Mn(II) aggregate into a large macrocyclic ligand
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A Schiff-base [2 + 2] macrocycle obtained by the reaction of 2,6-diformyl-4-methylphenol with 1,11-diamino-3,9-dimethyl-3,9-diazo-6-oxaundecane encapsulates three manganese ions into its cavity; EPR, UV-VIS-NIR, XPS spectroscopic data, X-ray crystallograp
- Yoshino,Miyagi,Asato,Mikuriya,Sakata,Sugiura,Iwasaki,Hino
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p. 1475 - 1476
(2007/10/03)
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- MACROHETEROCYCLES. XVI. SYNTHESIS OF MACROCYCLIC LACTONOLACTAMS AND THEIR ION-SELECTIVE CHARACTERISTICS
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Sewenteen new macrocyclic lactonolactams were obtained by the acylation of N,N'-dimethylpolyoxyalkanediamines with acid dichlorides in benzene under conditions of high dilution.The coefficients of cationic selectivity in the series of alkali and alkaline-earth metals were determined for them, and compounds which exhibit high calcium selectivity were found.
- Bogat-skii, A.V.,Luk'yanenko, N.G.,Shapkin, V.A.,Popkov, Yu.A.,Nazarova, N.Yu.,Chernotkach, Z.A.
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p. 798 - 804
(2007/10/02)
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