140-31-8Relevant articles and documents
Nitric oxide reduction of copper(II) complex with tetradentate amine ligand followed by ligand transformation
Sarma, Moushumi,Singh, Amardeep,Gupta G., Subrahmanyam,Das, Gopal,Mondal, Biplab
, p. 63 - 70 (2010)
Copper(II) complex 1 with a tetradentate ligand L [L = tris(2-aminoethyl)amine, tren] has been prepared as its perchlorate salt. Single crystal X-ray structure of 1 indicates its trigonal bipyramidal shape in the solid state. The complex, in dry and degassed acetonitrile solvent, was made to react with nitric oxide gas and the copper(II) center has been observed to reduce to Cu(I) with simultaneous nitrosation followed by diazotization at the terminal primary amine positions of the ligand to result into cyclization product, 1-(2-aminoethyl)piperzine, L′ along with tris(2-aminoethyl)ammonium perchlorate, L′′-perchlorate. However, when an acetonitrile:water (10:1, v/v) mixture has been used as the solvent, the reduction of Cu(II) to Cu(I) is observed and the ligand is found to be precipitated out only as L′′-perchlorate. The reduction of Cu(II) to Cu(I) has been studied by UV-visible, 1H NMR and EPR spectroscopic techniques and by X-ray single crystal structure determination. Both the L′ and L′′-perchlorate have been isolated from the reaction mixture and characterized by using microanalytical studies, various spectroscopic techniques and X-ray single crystal structure determination.
MANUFACTURING METHOD OF CYCLIC ETHYLENE AMINES
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Paragraph 0037; 0040, (2017/08/15)
PROBLEM TO BE SOLVED: To provide a method for manufacturing cyclic ethylene amines at good selectivity. SOLUTION: By using a solid catalyst containing palladium or palladium and gold with percentage of palladium of 50 to 100 mol%, ethylene diamine is deamination condensed. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
BLENDS OF AMINES WITH PIPERAZINE FOR CO2 CAPTURE
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Page/Page column, (2015/03/16)
Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a blend of piperazine and at least one diamine or triamine.
Amination process for manufacturing amines using catalyst
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Paragraph 0044-0049, (2014/08/07)
Disclosed is a process for the preparation of an amine (particularly diamines and polyamines) by reacting an alkanolamine or a polyol with ammonia in the presence of a catalyst composed of two active metals from the group of transition metals, namely nickel and chromium supported on a microporous refractory substrate, in a hydrogenated, trickle bed reactor.
Process for Preparing Piperazine
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Paragraph 0097; 0098, (2014/01/08)
Process for preparing piperazine of the formula I by reacting diethanolamine (DEOA) of the formula II with ammonia (NH3) in the presence of hydrogen and a supported, metal-containing catalyst, wherein the catalytically active mass of the catalyst, prior to its reduction with hydrogen, comprises 20 to 85% by weight of oxygen-containing compounds of zirconium, calculated as ZrO2, 1 to 30% by weight of oxygen-containing compounds of copper, calculated as CuO, 14 to 70% by weight of oxygen-containing compounds of nickel, calculated as NiO, and 0 to 5% by weight of oxygen-containing compounds of molybdenum, calculated as MoO3, and the reaction is carried out in the liquid phase at an absolute pressure in the range from 160 to 220 bar, a temperature in the range from 180 to 220° C., using ammonia in a molar ratio to DEOA used of from 5 to 20 and in the presence of 0.2 to 9.0% by weight of hydrogen, based on the total amount of DEOA used and ammonia.
Process for Preparing Piperazine
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Paragraph 0106; 0107, (2014/01/08)
Process for preparing piperazine of the formula I by reacting diethanolamine (DEOA) of the formula II with ammonia in the presence of hydrogen and a supported, metal-containing catalyst has been found, wherein the catalytically active mass of the catalyst, prior to its reduction with hydrogen, comprises oxygen-containing compounds of aluminum, copper, nickel and cobalt and in the range from 0.2 to 5.0% by weight of oxygen-containing compounds of tin, calculated as SnO, and the reaction is carried out in the liquid phase at an absolute pressure in the range from 160 to 220 bar, a temperature in the range from 180 to 220° C., using ammonia in a molar ratio to DEOA used of from 5 to 25 and in the presence of 0.2 to 9.0% by weight of hydrogen, based on the total amount of DEOA used and ammonia.
PROCESS FOR PREPARING EDDN AND/OR EDMN AND A PROCESS FOR PREPARING DETA AND/OR TETA
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Paragraph 0559; 0560; 0562; 0563; 0564; 0565; 0566, (2013/03/26)
A process for preparing EDDN and/or EDMN by a) conversion of FA, HCN and EDA, the conversion being effected in the presence of water,b) depleting water from the reaction mixture obtained in stage a), andc) treating the mixture from stage b) with an absorbent in the presence of an organic solvent, wherein the adsorbent is a solid acidic adsorbent.
PROCESS FOR PREPARING EDDN AND EDMN
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Paragraph 0572; 0573; 0578; 0579; 0580, (2013/04/10)
A process for preparing EDDN and/or EDMN by conversion of FA, HCN and EDA, the reaction being effected in the presence of water, and, after the conversion, water being depleted from the reaction mixture in a distillation column, which comprises performing the distillation in the presence of an organic solvent which has a boiling point between water and EDDN and/or EDMN at the distillation pressure existing in the column or which forms a low-boiling azeotrope with water.
Process for preparing TETA and DETA
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Paragraph 0589-0598, (2013/04/13)
A process for preparing TETA and/or DETA by hydrogenating EDDN and/or EDMN with hydrogen in the presence of a catalyst, which comprises preparing EDDN and/or EDMN from FA, HCN and EDA in the presence of toluene as a solvent and performing the hydrogenation in suspension mode in the presence of THF.
Dendritic polymers with enhanced amplification and interior functionality
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, (2011/08/03)
Poly(ester-acrylate) and poly(ester/epoxide) dendrimers. These materials can be synthesized by utilizing the so-called “sterically induced stoichiometric” principles. The preparation of the dendrimers is carried out by reacting precursor amino/polyamino-functional core materials with various branch cell reagents. The branch cell reagents are dimensionally large, relative to the amino/polyamino-initiator core and when reacted, produce generation=1 dendrimers directly in one step. There is also a method by which the dendrimers can be stabilized and that method is the reaction of the dendrimers with surface reactive molecules to pacify the reactive groups on the dendrimers.
