Acid-basic properties of 2,2-Bis[(2,4-dihydroxy-3-methyl-aryl)ethyl]methylamine and its interaction with Cu(II)
作者:Yu. I. Sal’nikov、G. A. Boos、I. S. Ryzhkina、A. R. Burilov、D. N. Manzhukova
DOI:10.1134/s1070328407070068
日期:2007.7
The acid-basic and complexing properties of the novel compound 2,2-bis[(2,4-dihydroxy-3-methyl-aryl)ethyl]methylamine (H4L) in an aqueous isopropyl alcohol (80 vol % (CH3)(2)CHOH) were characterized by pH metric titration (T = 25 +/- 0.1 degrees C) and mathematical simulation of equilibria. The compound forms associates (dimers and tetramers) in the medium under study. The monomeric deprotonated species are accumulated only in a strongly alkaline medium. In an aqueous alcohol, the H4L ligand forms with Cu(II) eight mononuclear complexes, where it can be coordinated through the amino and hydroxo groups.
Synthesis and properties of N-[2,2-bis(2,4-dihydroxyaryl)ethyl]-N-methylamines and their hydrohalides
作者:A. R. Burilov、A. S. Gazizov、N. I. Kharitonova、M. A. Pudovik、W. D. Habicher、I. Baier、A. I. Konovalov
DOI:10.1007/s11172-007-0054-8
日期:2007.2
α-methylaminoacetaldehyde dimethyl acetal with two molecules of resorcinol or methylresorcinol in hydrohalogen acid solutions led to substituted N-(2,2-diarylethyl)-N-methylamine hydrohalides. Reactions of the corresponding amines with aceticanhydride, mono-and diisocyanates, and formaldehyde were studied. Conditions for formation of calixarene from resorcinol and α-methylaminoacetaldehyde dimethyl acetal were