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7964743 Catalyst for asymmetric synthesis, ligand for use therein, and process for producing optically active compound through asymmetric synthesis reaction using them  
Compounds represented by the following general formula (1a) or (1b). A complex comprising a center metal of rhodium and a compound represented by the following general formula (1a) or (1b) as a...
7960589 Synthesis of sphingosines and their derivatives  
Embodiments of the present disclosure provide for methods of making sphingosines and derivatives thereof, and the like.
7700805 Process for preparing amines  
An amine is prepared by cleaving a carbamate of the formula I wherein R1=hydrogen, alkyl, aryl or phenyl group, R2=alkyl, aryl or phenyl group, wherein R1 and R2 are independently substituted or...
7687666 Methods for preparing sulfonamide substituted alcohols and intermediates thereof  
Processes for preparing amino alcohols or salts thereof and sulfonamide substituted alcohol compounds are provided. Desirably, the sulfonamide substituted alcohol compounds are heterocyclic...
7612239 Method for asymmetric alkynylation of alpha-imino esters  
Method for the preparation of asymmetric alkynylated α-amino esters of the formula wherein R1 and R2 are independently optionally substituted alkyl cycloalkyl, aryl or heteroaryl, and Y is ...
7538251 Synthesis of severely sterically hindered secondary aminoether alcohols from a ketene and/or carboxylic acid halide and/or carboxylic acid anhydride  
Severely sterically hindered secondary aminoether alcohols are prepared by a process comprising reacting a ketene with sulfuric acid to produce an anhydride which is then reacted with, to cleave...
7485756 Continuous process for decarboxylating carboxylic acids  
A continuous process for decarboxylating carboxylic acids proceeds by I.) initially charging a carbonyl compound as a catalyst in a solvent at reaction temperature, to obtain a catalyst solution;...
7429680 Synthesis of sterically hindered secondary aminoether alcohols  
Severely sterically hindered secondary aminoether alcohols are prepared by reacting an organic carboxylic acid or alkali metal salt of an organic carboxylic acid with a sulfonyl halide, a sulfuryl...
7235695 Cycloalkyl substituted polyamines for cancer therapy and methods of synthesis therefor  
Conformationally restricted polyamine compounds useful in treatment of cancer and other diseases marked by abnormal cell proliferation are disclosed. Improved methods of synthesizing such compounds...
6852892 Process for the synthesis of sphingosine  
This invention relates to a method for the production of a sphingoid base according to formula comprising the steps of (1) dissolving a starting compound according to formula III or a salt thereof...
6794542 Method for the preparation of enantiomerically enriched compounds  
Process for the preparation of a diasteromerically enriched phenylglycine amide derivative in which an enantiomerically enriched phenylglycine amide is converted into the corresponding Schiff base...
6534682 N(CF3)2 anion generation and its use  
The invention relates to a process of generating N(CF3)2 anions by reacting a metal fluoride of formula MFx with a compound of formula RFSO2N(CF3)2, (CF3)2N(SO2CF2)mSO2N(CF3)2 or RFCON(CF3)2. The...
6500985 Process for producing alpha-aminoketones  
An amino group of an α-amino acid ester is protected as an imine, and it is then reacted with a halomethyllithium to obtain an N-protected-α-aminohalomethylketone. Further, this N...
6417403 Process for preparing chiral (s)-2,3-disubstituted-1-propylamine derivatives  
A process for the preparation of chiral (S)-2,3-disubstituted-1-propylamine derivatives, in which a carbonyl group of (S) 3,4-disubstituted-1-butanecarbonyl derivatives is converted to an amine...
6417402 Squaraine based dyes and process for preparation thereof  
The present invention relates to squaraine dye containing terminal aminoanthracene or acridine groups and to a process for preparation thereof.
6258976 Process for the preparation of polyamines and polyamine derivatives  
Disclosed are processes for the preparation of compounds of the formula (I): H2N--(CH2)n--A--(CH2)m--NH2, or (II): H2N--(CH2)n--NH--C(NR1)--NH--(CH2)m--NH2, wherein n and m are each i...
6235940 Method for producing oxalkylated amines or alcohols  
In a process for preparing alkoxylated amines or alcohols in which a reaction mixture comprising an amine or an alcohol or a mixture of two or more amines and/or alcohols and an alkylene oxide, or...
6040464 Process for the preparation of protected 3-amino-1,2-dihydroxypropane acetal and derivatives thereof  
A process for producing protected 3-amino-1,2-dihydroxypropane acetal, particularly in chiral forms, for use as an intermediate in the preparation of various 3-carbon compounds which are chiral. In...
6005146 Stabilized non-polymeric acetoacetate esters that promote adhesion to metallic and oxidized substrates  
The present invention provides improved adhesion promoters for latex paints. The adhesion promoters are enamines of acetoacetate esters, or substituted acetoacetate esters. The invention also...
5981802 Simple allylic amination procedure  
The subject invention provides a method of preparing an allylic amine having the structure: ##STR1## wherein R1, R2, R3, R4 and R5 are each independently hydrogen, halogen, cyano, nitro, linear or...
5925792 Process for preparing 2-amino-1,3-alkanediol or derivative thereof, process for preparing optically active dihydrosphingosine derivative, and intermediates for optically active dihydrosphingosine derivative  
A process for preparing an optically active dihydrosphingosine derivative is disclosed, comprising reducing a (2R,3R)-2-amino-3-hydroxyalkanoic acid derivative represented by formula (III):...
5874520 Preparation of nylon salts from diamine carbamates and dicarboxylic acids  
Substantially anhydrous nylon salts are made in a solid state process in which solid diamine carbamates are contacted and mixed with solid dicarboxylic acids in a near instantaneous reaction to...
5874623 Process for the production of polyether aminoalcohols  
Disclosed herein is a method of preparing polyether aminoalcohol by reacting a primary aminoalcohol with a polyether terminated with a good leaving group.
5801278 Low water diamine-dicarboxylic acid salt preparation  
The invention provides a process for directly manufacturing a diamine/dicarboxylic acid salt with a low water content. The process includes reacting a diamine with a dicarboxylic acid to form a...
5763737 S-(2-disopropylamino) ethyl methylphonothioate ION with hydrogen peroxide  
A method for the reduction of toxicity of S-(2-diisopropylamino)ethyl methylphosphonothioate ions in a medium or mixture by reaction with hydrogen peroxide and a strong inorganic acid.
5728884 Process for the work-up of complex amine hydrofluroides  
The invention relates to a process for the work-up of a liquid complex hydrofluoride of a tertiary amine of the formula (I) R1 R2 R3 Nn HF!, where the radicals R1, R2 and R3 are C1 -C8 -alkyl g...
5672753 Method of producing racemic amino alcohols  
α-oximino carboxylic acids or their esters are reduced with an alkali boron hydride and hydrogen chloride or sulfuric acid to yield racemic amino alcohols (e.g. (RS)-tert-leucinol).
5654467 Process for the production of C-substituted diethylenetriamines  
The invention relates to a process for the production of C-substituted diethylenetriamines of general formula ##STR1## in which R1, R2, R3 and R4 have different meanings.
5648544 Process for the preparation of 2-aminoalkane-1,3-diols  
A process for the preparation of 2-aminoalkane-1,3-diols by a single step reduction of alkyl 2-oximino-3-oxoalkanoates. The reduction is carried out in the presence of at least one hydride, in a...
5639895 Process for producing β-nitroenamine  
Disclosed is a process for producing β-nitroenamine represented by the formula I: ##STR1## wherein R1 and R2 are the same or different and independently indicate a hydrogen atom or a C1 -C10 alkyl ...
5563288 Process for the preparation of tertiary aminocarbonates and aminoethers  
The invention relates to processes for producing di-(tertiary aminoalkyl) carbonate including the step of reacting a tertiary alkanolamine with methyl alkyl carbonate in the presence of a...
5536888 Process for producing diol compounds  
A diol compound, for example, hexanediol, is produced with a high efficiency by esterifying a carboxylic acid mixture, collected from a reaction product mixture of a liquid phase oxidation of...
5527949 Method for making an amine and an alkyl ester and method for reducing hydrogen cyanide levels in alkyl ester  
A method for making an amine includes the steps of heating a reaction mixture including a nitrile, an acid, water and a substrate compound capable of generating a carbonium ion by reaction with the...
5442121 Process for producing N,N-disubstituted aminophenol  
A process for producing N,N-disubstituted aminophenol which comprises the steps of:obtaining a reaction mixture containing N-substituted aminophenol by reacting a dihydric phenol and an...
5399763 Process for preparing optically active 2-aminopropanal  
A process for preparing an optically active 2-aminopropanal through oxidative cleavage of the corresponding optically active 3-amino-1,2-butanediol of the following formula (2): ##STR1## wherein R1...
5331100 Self-building detergents  
Self-building laundry detergents are organic polyamine amides, which contain a plurality of carboxylate radicals and an amide ester. These compounds are useful individually as detergents or as...
5326911 Process for the preparation of ortho-amides  
Ortho-amides of the formula ##STR1## can be prepared by reacting salts of the formula ##STR2## with alcoholates of the formula M1 OR1 (III)where the radicals R1 to R4, M1 and X.crclbar. have the...
5283364 Hydrolysis process for polyamines  
Polyamines containing primary amino groups are made by hydrolyzing an isocyanate with water in the presence of a solvent which is a carboxylic acid amide. The solvent must be used in a quantity of...
5231217 Process for the preparation of amine-terminated compounds  
The present invention is directed to a novel solvent-free process for preparing amine terminated compounds by reacting a polyfunctional acetoacetic acid ester with either ammonia or an organic...
5220069 Processes for the preparation of carbamates  
A process for preparing nitrogen-containing compounds which comprises contacting a carboxylated N-monosubstituted nitrogen-containing compound or a carboxylated N,N-disubstituted...
5208379 Hydrolysis of polyurethanes  
Waste or scrap polyurethane may be conveniently and economically converted to useful active-hydrogen containing polyethers and polyamines by contacting the polyurethane with water, strong base, and...
5164497 Decarboxylation processes using mixed metal oxide catalysts  
A decarboxylation process which comprises contacting a carboxylated compound with a metal oxide catalyst under conditions effective to decarboxylate the carboxylated compound.
5149861 Recovery of trialkylamines and methyl formate from mixtures obtained in the preparation of trimethylolalkanes  
Trialkylamines and methyl formate are recovered from reaction mixtures obtained in the preparation of trimethylolalkanes by reaction of n-alkanals with from 2.2 to 4.5 moles of formaldehyde in...
5128471 Process for the production of organic amines, polyamine mixtures and their use as hardeners for polymer precursors  
The present invention relates to a process for the production of primary amines containing aliphatically or cycloaliphatically bound amino groups, characterized in that the isocyanate groups of...
5066824 Novel process for the preparation of amine-terminated compounds  
The present invention is directed to a process for preparing amine terminated compounds by reacting a polyfunctional acetoacetic acid ester with either ammonia or an organic compound which contains...
4985556 Perfluoro(dialkylaminopropene) derivatives  
Perfluorocarboxylic acid fluorides represented by the formula A-B, wherein A is either ##STR1## and B stands for a perfluoro-di-substituted amino group, and perfluoro(dialkylaminopropenes)...
4935546 Process for the production of long chain alkylamines and dimethylalkylamines and catalysts therefor catalysts therefor  
A process for the production of a primary alkylamine or a dimethylalkylamine in a single stage comprising heating a reaction medium comprising a long chain carboxylic acid ester with ammonia and...
4931595 Catalytic hydrolysis process for polyamines  
Polyamines containing primary amino groups are prepared in a single stage process by hydrolyzing an isocyanate in the presence of a catalyst incorporable through an NCO reactive group and a...
4912216 Method for production of perfluoro-(N-vinylamine) compounds  
A perfluoro-(N-vinylamine) compound containing a >NCFCF2 group is produced from a perfluoro-compound containing a group of the general formula: ##STR1## (wherein X stands for a fluorine atom or a...
RE32677 Polyamines, a process for the production of polyamines and their use in the production of polyurethanes  
The invention relates to a simplified, economic process for the production of polyamines by the alkaline hydrolysis of compounds containing terminal aromatic and/or aliphatic isocyanate groups...
Matches 1 - 50 out of 144 1 2 3 >