Water-soluble 2-aminomethylidene-1,3-dicarbonyl compounds as new chalcogenide colloidal stabilizers
                                
                                    
                                        作者:D. N. Bazhin、Yu. S. Kudyakova、T. I. Gorbunova、N. S. Kozhevnikova、A. Yu. Suntsov、Ya. V. Burgart、A. A. Rempel’、V. I. Saloutin、O. N. Chupakhin                                    
                                    
                                        DOI:10.1134/s1070428013030019
                                    
                                    
                                        日期:2013.3
                                    
                                    Reactions of 2-ethoxymethylidene derivatives of 1,3-dicarbonyl compounds with N,N-dimethylethane-1,2-diamine gave a number of 2-[(2-dimethylaminoethyl)amino]methylidene-1,3-dicarbonyl compounds which were subjected to regioselective quaternization at the tertiary nitrogen atom with methyl iodide. The resulting quaternary ammonium salts inhibited aggregation of cadmium and zinc sulfide sols in aqueous medium.