|8664444||Method for producing primary aliphatic amines from aldehydes|
A continuous process for producing primary aliphatic amines having 9 to 18 carbon atoms by reaction of corresponding aliphatic aldehydes with ammonia and hydrogen in the presence of a hydrogenation catalyst in the liquid phase, characterized in that the reaction is ...
|8536377||Method for producing N,N-substituted-3-aminopropan-1-ols|
The present invention relates to a process for preparing N,N-substituted 3-aminopropan-1-ols by a) reacting secondary amine with acrolein at a temperature of (−50) to 100° C. and a pressure of 0.01 to 300 bar, and
|8445726||Process for preparing unsymmetric secondary tert-butylamines in the liquid phase|
The present application relates to a process for preparing unsymmetric secondary tert-butylamines which, as well as the tert-butyl radical, also comprise an alkyl, cycloalkyl or benzyl radical. They are prepared by reacting corresponding aldehydes with tert-butylami...
|8420864||High-purity N-ethylmethylamine and process for preparing same|
Disclosed herein is N-ethylmethylamine having a very high degree of purity, that is to say very low contents of impurities commonly encountered in conventional industrial processes, and a process for preparing, on an industrial scale, high-purity N-ethylmethylamine....
The invention relates to a particulate substance comprising a particulate porous support coupled to a palladium species. The palladium species may comprise palladium nanoclusters. The particulate substance may be used as a catalyst for conducting a carbon-carbon cou...
|8034978||Process for the preparation of an amine|
Process for preparing an amine by reacting an aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group consisting of primary and secondary amines in the presence of a heterogeneous catalyst, wherein the reaction is carried out using a sus...
|7405327||Method for the continuous production of an amine|
Process for the continuous preparation of an amine by reaction of a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group consisting of ammonia, primary and secondary amines at a temperature in the range f...
|7332089||Method of extracting metal ions from an aqueous solution utilizing an antimony silicate sorbent|
The invention provides a use of a material comprising antimony silicate as a sorbent in the removal of metal ions, e.g. radioactive metal ions, from an acidic liquid medium. The metal ions may be selectively removed from amongst other ions such as Na, K, Mg, and Ca ...
|7230134||Method for the production of amines by reductive amination of carbonyl compounds under transfer-hydrogenation conditions|
This application claims the benefit of German priority Application No. 10138140.9, filed on Aug. 9, 2001, and International Application No. PCT/EP02/08748, filed on Aug. 6, 2002. The invention relates to the production of amines by the reaction of aldehydes or keton...
|7196033||Advances in amination catalysis|
Provided herein are catalysts useful in reductive amination, which include nickel, copper, zirconium and/or chromium, oxygen, and tin. The presence of the tin increases the selectivity of the catalyst in reductive aminations over the catalysts of the prior art. ...
|7183438||Catalysts and method for the production of amines|
Disclosed are catalysts, the catalytically active mass of which contains 22 to 40 percent by weight of oxygen-containing compounds of zirconium, calculated as ZrO2, 1 to 30 percent by weight of oxygen-containing compounds of copper, calculated as CuO, 15 ...
|7074963||Preparation of secondary amines|
Disclosed herein is a process for the reductive alkylation of primary amines to form secondary amines, by high pressure reaction of the primary amine with an alkylating agent and hydrogen in the presence of a catalyst which comprises metallic palladium. A process of...
|7034186||Preparation of an amine|
Process for preparing an amine by reacting a primary or secondary alcohol, aldehyde or ketone with hydrogen and a nitrogen compound selected from the group consisting of ammonia and primary and secondary amines in the presence of a catalyst whose preparation has inv...
|7009081||N-methylated amines from selective vapor phase amination of amino ether alcohols|
A method for converting amino ether alcohols to amino ether amines by amination in the vapor phase with a catalyst comprising copper and zinc. The catalyst may also comprise an alkali, alkaline earth, or lanthanide element as a promoter. ...
|6982352||Process for preparing N-methyldialkylamines from secondary dialkylamines and formaldehyde|
The present invention relates to a process for preparing N-methyldialkyl-amines by reacting secondary dialkylamines with formaldehyde at a temperature of from 100 to 200° C., by using from 1.5 to 3 mol of formaldehyde per mole of secondary dialkylamine and degassin...
|6894160||Catalytic process for the modification of carbohydrates, alcohols, aldehydes or polyhydroxy compounds|
The invention relates to the industrial conversion of carbohydrates, alcohols, aldehydes or polyhydroxy compounds in aqueous phase. According to the invention a catalytic method is used for the conversion, using a metal catalyst consisting of polymer-stabilized nano...
|6696609||Process for producing diamines|
A process for producing diamines which comprises the steps of: (1) reacting a dialdehyde with ammonia and hydrogen in the presence of an alcohol and a hydrogenation catalyst to synthesize the corresponding diamine; (2) separating and recovering the alcoho...
|6689914||Preparation of amines|
The preparation of amines of the formula (I): R1 R2 CH--N R3 R4 (I) in which R1, R2, R3 and R4, independently of one another, are hydrogen, straight-chain or branched C1
|6365778||Process for the preparation of N-alkypolyhydroxyalkylamines from monoalkylamine and reducing sugar|
Aqueous, alcoholic or aqueous-alcoholic solutions of a monoalkylamine and a reducing sugar are simultaneously injected into a mixing unit and the two solutions are mixed under turbulence in the mixing unit for 6 seconds to 5 minutes at a temperature of 25...
The present invention relates to methods for the reductive amination of a carbonyl-containing compound. R1 R2 CO where R1 and R2 are either H, alkyl, aryl or heterocyclic etc with an amine NHR3 R...
|6252071||Aminomethylation of tocopherols|
A process for the production of a Mannich reagent comprises reacting formaldehyde, especially paraformaldehyde, with a secondary amine in the complete or almost complete absence of a solvent. An alternative comprises reacting a diaminomethane produced fro...
|6187957||Preparation of amines|
Amines are prepared by reacting primary or secondary alcohols, aldehydes or ketones with nitrogen compounds selected from the group consisting of ammonia and primary and secondary amines at elevated temperatures and superatmospheric pressures in the prese...
|6147261||Diaminoalkane syntheses via selective amination of hydroxyaldehydes|
Disclosed is a process for producing diaminoalkanes which comprises reacting a hydroxyalkanal characterized by two to six carbons, preferably 3-hydroxypropanal, with excess ammonia and sufficient hydrogen to stabilize a nickel or cobalt-containing hydroam...
|6111141||Preparation of N-ethyldiisopropylamine|
In the process for preparing N-ethyldiisopropylamine by reacting acetaldehyde with diisopropylamine and hydrogen at elevated temperature and under pressure in the presence of a hydrogenation catalyst, the catalyst comprises an oxidic support material sele...
|6100395||Reductive alkylation of secondary amines with hydrosilane|
A novel process for the production of tertiary amines by reductive alkylation of second amine using hydrosilane and a Lewis acid is disclosed. The novel process has applications in the preparation of imidazole-containing benzodiazepines, inhibitors of far...
|6013681||Production of bituminous emulsion and liquid amine emulsifier therefor|
A liquid amine compound which can be applied to various uses such as emulsification for bitumens since it has as high surface activity as those of solid amines and is more excellent in workability as compared with the solid amines, and an emulsifier for b...
|6013816||Process for the preparation of a linear formyl compound|
Process for the preparation of a linear ω-formyl-carboxylic acid or a corresponding linear formylnitrile compound starting from an internally unsaturated C4 -C12 carboxylic acid or a corresponding ester or nitrile by means of hydrof...
|5998669||Process for production of 2-amino-1,3-propanediol|
The present invention relates to a process of making 2-amino-1,3-propanediol by reacting 1,3-dihyrdroxyacetone dimer with an amine compound....
|5973208||Process for producing diamines|
A process for producing diamines by reacting a dialdehyde with ammonia and hydrogen in the presence of a hydrogenation catalyst to produce the corresponding diamine, where a solvent comprising an alcohol is used in the reaction and the concentration of wa...
|5895816||Preparation of alkylamines|
In a process for preparing alkylamines by reacting amines and aliphatic aldehydes in the presence of free hydrogen on a fixed bed catalyst in a reactor in which amines and aldehydes are mixed in the catalyst bed after being fed in in separate streams, onl...
|5808160||Preparation of hydroxy-alkyl-substituted aminoalkynes with heterogenous catalysis|
Hydroxyalkyl-substituted aminoalkynes of the general formula I ##STR1## where at least one of the substituents R1, R4 or R5 is hydroxyalkyl are prepared in a reaction with heterogeneous catalysis....
|5773658||Process for the preparation of N-methylalkylamines|
A process for the preparation of N-methylalkylamines of the formula CH3 --NH--CH2 --R in which R is an aliphatic radical having 1 to 3 carbon atoms, by reacting an aldehyde of the formula R--CHO with an amine of the formula R'--NH
|5756769||Method for producing propargylamine compounds|
A method for producing a propargylamine compound represented by the general formula (I): ##STR1## which comprises reacting a propargyl compound represented by the general formula (II): ##STR2## with an aromatic aldehyde represented by the g...
|5756306||Process for producing a-hydroxy acid or a-hydroxyamide by microorganism|
A process for producing an -hydroxy acid or an -hydroxyamide which comprises treating an aldehyde and prussic acid or an -hydroxynitrile with a microorganism having nitrilase or nitrile hydratase activity in an aqueous medium and main...
|5756558||Hydroxyalkylbis(aminoethyl) ether compositions for the production of polyurethanes|
A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition comprising a compound having the following formula I: ##STR1##...
|5744644||Concentrated solutions of polyhydroxyalkylamines and their use|
It has been found that certain polyhydroxyalkylamines have a particularly good solubility in water, alcohols and in mixtures of water and alcohols. The concentrated solutions described consist essentially of water, alcohols, preferably C1 -C
|5744630||Method of producing 3-amino-2-hydroxy-1-propanol derivatives|
The present invention has for its object to provide an efficient and economical method for producing an 3-amino-2-hydroxy-1-propanol derivative and an oxazolidinone derivative derived therefrom, both of which are of use as intermediates for the production...
|5646235||Reductive alkylation of polyamines|
A method is provided for the preparation of tertiary polyamines by alkylating a polyamine having at least two primary amino groups without the use of excess solvent. More particularly, a tertiary amine is produced by reductively alkylating a polyamine wit...
|5631405||Method of forming amino acid-derived diaminopropanols useful as chemical intermediates for protease-inhibitors|
The present invention relates to a method of forming a 1,3-diamino-3-substituted-2-propanol chemical intermediate from which various chemicals, such as selected protease-inhibitors and other drugs, as well as polymers, can be synthesized. This method incl...
Pharmaceutical compounds of the formula ##STR1## in which R1 and R3 are each C1-4 alkyl or C1-4 alkyl-carbonyl, and R2 is carboxy, tetrazolyl, C1-4 alkyl-sulphonamido or --CR4