Amines complexones

Bis carboxymethyt)glycine, 9CI. Triglycolamidic acid. Trimethylamine-l,rJ"-tricarboxylic acid. Tris(carboxymethyt)amine. Complexone I. NTA [139-13-9]... 

Nitrilotriacetic acid [tris(carboxymethyl)amine, NTA, Complexone 1] [139-13-9] M 191.1,... 

N. B. Savenok, N. A. Mariampolskij, P. N. Mariampolskij, and L. A. Loshmankina. Plugging solution—contains Portland cement, calcium chloride, phosphonium complexone containing amine-group and water and has high adhesion to stratal rock. Patent SU 1802088-A, 1993. 

Complexones containing amine and carboxyl fragments [756-767] occupy an important place amongst ligand systems with N,0-donor centers. These ligands, in parti-... 

COMPLEXON II (60-00-4) Incompatible with sulfuric acid, bases, ammonia, aliphatic amines, alkanolamines, isocyanates, alkylene oxides, epichlorohydrin. 

The reaction between ammonia (or a primary or secondary amine), formaldehyde and phosphorous acid is only one particular case of the Kabachnik-Medved -Fields reaction, consisting of the aminomethylation of a phosphorus species possessing a reactive P(0)H group, and so is of the Mannich type. The involvement of ammonia leads only to 226 and the intermediate aminomethylphosphonic 227 (R = H) and aminobis(methylene)bisphos-phonic acid 228 (R = H) are not isolable although they are detectable by NMR spectroscopy the sequence can be stopped at the earlier stages if a primary or secondary amine is used The use of a,co-diaminoalkanes leads to complexones of type 229 . Ethanolamine affords the related bis(phosphonic acid) 230 and diethanolamine yields 231 under similar conditions acidolysis of the linear compounds brings about their cyclization... 

In 1937 I.G.-Farbenindustrie patented a method for the preparation of polyaminoacetonitriles, corresponding acids and their derivatives . The process, known as the hydrogen cyanide process, utilizes sodium cyanide in acid solution. The cyanomethylation takes place by treatment of the amine with formaldehyde and hydrogen cyanide. In the case of ethylenediamine reaction (2) takes place ethylenediaminetetraacetonitrile (1) is isolated to ensure that the resulting tetrasodium salt, after hydrolysis, is not contaminated by by-products. This synthesis can be performed as a continuous process and is also used to obtain other complexones. The use of hydrogen cyanide and of an acid medium gives rise to corrosion and safety problems. 

Vanadium(III) complexes, 473 adenine, 475 alcohols, 478 amides, 474, 480 amines, 474 amino acids, 484 ammonia, 474 aqua, 477 arsines, 476 azide, 475 bipyridyl, 475 bromides, 483 carboxylates, 479 catecholates, 478 chlorides, 482 complexones, 485 cyanides, 474,476 (Wethyl sulfoxide, 480 dioxygen, 478 dithiocarbamates, 481 dithiolates, 481 dithiophosphinates, 481 ethers, 478... 

Macrocyclic poly amines as biological cation and anion complexones — an application to calculi dissolution. E. Kimura, Top. Curr. Chem., 1985,128,113 (85). 

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