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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...
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7524990 |
Synthesis of sterically hindered secondary aminoether alcohols
Severely sterically hindered secondary aminoether alcohols are prepared by reacting organic carboxylic, organic carboxylic acid halides, acid anhydrides or a ketene with an alkyl, alkaryl or...
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7358399 |
Process for the preparation of N,N-diisopropyl-3-(2-hydroxy-5-methylphenyl)-3-phenyl-propaneamine
A process is described for the preparation of N,N-diisopropyl-3-(2-hydroxy-5-methylphenyl)-3-phenyl-propan
eamine comprising substitution of the sulfonyloxy group of the compound of the formula
...
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7312331 |
Stable cyclic (alkyl)(amino) carbenes as ligands for transition metal catalysts
Stable carbene ligands are provided having a carbene center flanked by a quaternary carbon and an amino group, and having utility in the preparation of various transition metal complexes.
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7186864 |
Glucocorticoid mimetics, methods of making them, pharmaceutical compositions, and uses thereof
A compound of Formula (IA) or Formula (IB)
wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are as defined herein, or a tautomer, prodrug, solvate, or salt thereof; pharmaceutical...
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7053246 |
Preparation of a symmetrical secondary amine
Process for preparing a symmetrical secondary amine by reaction of a primary amine in the presence of hydrogen and a catalyst whose preparation has involved precipitation of catalytically active...
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7005449 |
Tolterodine salts
The present invention concerns novel pharmaceutically active compounds, pharmaceutical compositions containing the same, the compounds for use as medicaments, and use of the compounds for the...
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6933409 |
Amination of aromatic hydrocarbons and heterocyclic analogs thereof
Noble metal/reducible metal oxide catalysts effective for the direct amination of aromatic hydrocarbons and heterocyclic analogs thereof are disclosed. In one embodiment, the cataloxidant comprises...
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6822128 |
Flow control in a three-phase monolithic catalyst reactor
A method is disclosed for maintaining a volumetric gas to liquid ratio in a segmented gas/liquid flow along a reactor of monolithic catalyst beds in series. The present invention includes the steps...
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6723880 |
Preparation of secondary amines from primary amines
A process for producing secondary amines of the formula R 1 R 2 N—A—NH—A—NR 1 R 2 , where R 1 and R 2 are linear or branched C 1-20 -alkyl radicals, optionally substituted with from 1 to...
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6646163 |
Method for producing high purity xylylenediamine
In a method for producing xylylenediamine by hydrogenating phthalonitrile separated from a gas produced by causing xylene to react with ammonia and oxygen-containing gas in the presence of a...
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6476269 |
Method for producing xylylenediamine
A method for producing xylylenediamine by hydrogenating phthalonitrile synthesized through ammoxidation of xylene, wherein phthalonitrile is trapped in an organic solvent (A) by bringing a gas...
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6387545 |
Organic hole transporting and blue light emitting electroluminescent materials
A tertiary amine imparted quaterphenyl compound represented by the following formula: where R 1 and R 2 , which can be different or the same, are hydrogen, C 1 -C 5 alkyl, or C 6 -C 12 aryl,...
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6316673 |
Process for producing aminodiphenylamines
The present invention relates to the production of aminodiphenyl-amines resulting in good yields and high purity levels when aromatic amines are reacted with nitrohalobenzenes in the presence of a...
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6235871 |
Synthesis of oligoarylamines, and uses and reagents related thereto
The transition metal-catalyzed amination of aryl halides, in conjunction with an orthogonal protective group scheme, forms the basis of two routes to oligoaniline precursors. The oligoaniline...
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6222073 |
Catalytic synthesis of N-alkylated anilines from olefins and anilines
Process for the preparation of an N-arylethylaniline of the formula (I) Ar--N(R 1 ) 2 -n (CHR 2 CHR 3 Ar') n (I) by reacting an aromatic olefin of the formula (II) Ar'CR 3 =CHR 2 (II)...
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6166234 |
Tripodal cyclopentadiene derivatives and their use
Novel tripodal cyclopentadiene derivatives have the formula (I) ##STR1## where E are identical or different and are --N(R)(R), --P(R)(R), --As(R)(R), --Sb(R)(R), --OR, --SR, --SeR, --TeR, where R...
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6143934 |
Preparation of amines from olefins over boron beta-zeolites
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6137010 |
Method for preparing 4-nitrodiphenylamine and 4-nitrosodiphenylamine from carbanilide
This invention relates to a process for preparing 4-nitrodiphenylamine and 4-nitrosodiphenylamine to be used for 4-aminodiphenylamine as an intermediate of antiozonant, wherein carbanilide is...
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6107521 |
Process for the preparation of secondary amines
N,N-disubstituted amines in which the amino nitrogen atom is bound to the carbon atom of an aromatic ring disubstituted in the positions ortho to the carbon atom, are prepared by allowing a primary...
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6100398 |
Transition metal-catalyzed process for preparing N-aryl amine compounds
Disclosed is a process for the preparation of N-aryl amine compounds, comprising reacting an amine compound with an arylating compound in the presence of a base and a transition metal catalyst...
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6069277 |
Amination of electrophilic aromatic compounds by vicarious nucleophilic substitution
The present invention relates to a process to aminate electrophilic aromatic compounds by vicarious nucleophilic substitution of hydrogen using quaternary hydrazinium salts. The use of...
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6046359 |
Catalysts for the amination of alkylene oxides, alcohols, aldehydes and ketones
A catalyst comprises, based on the total weight of the catalyst, 0.1-6% by weight of cobalt, nickel or a mixture thereof, 0.001-25% by weight of ruthenium, 0-10% by weight of copper and ...
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5929281 |
Process for producing heterocyclic aromatic amine or arylamine
A heterocyclic aromatic halide or an aryl halide is reacted with an amine compound in the presence of a base to give a heterocyclic aromatic amine or an arylamine, respectively. In this reaction, a...
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5922914 |
Process to prepare tolterodine
Disclosed is a novel intermediate, 3,4-dihydro-6-methyl-4-phenyl-2H-benzopyran-2-ol (IV) ##STR1## and an improved process for the preparation of tolterodine.
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5902901 |
Arylamine processes
A process for the preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of N,N-bis(3,4-dimethylphenyl)amine and an iodobiphenyl in the presence of a ligand copper...
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5900508 |
Preparation of amines from olefins over zeolites of the type PSH-3, MCM-22, SSZ-25 or mixtures thereof
A process for the preparation of amines by reacting an olefin with ammonia or a primary or secondary amine at a temperature of from 200 to 350° C. and a pressure of from 100 to 300 bar in the...
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5861535 |
Reductive alkylation process to prepare tertiary aminoaryl compounds
Tertiary aminoaryl compounds, such as N,N'dialkylaminoaryl compounds, are prepared using successive reductive steps without isolation therebetween, at high temperature and pressure. A nitroaryl...
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5840981 |
Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine
A process for preparing N-methyl-2-(3,4-dimethoxyphenyl)-ethylamine comprises hydrogenating 3,4-dimethoxyphenylacetonitrile with a methylamine of the general formula I ##STR1## where R 1 is...
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5684203 |
Process for the preparation of nitro-substituted arylamines
Nitroaromatics can be aminated using urea in the presence of bases and oxygen.
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5639718 |
Multifunctional viscosity modifiers for lubricating oil compositions with improved dispersancy and antioxidancy derived from adducts of quinone
An oil-soluble lubricating oil and fuel additive, useful as a multifunctional viscosity modifier comprising succinimide and other amine-containing polymers reacted with a quinone or substituted...
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5633406 |
Vicarious nucleophilic substitution using 4-amino-1,2,4-triazole, hydroxylamine or O-alkylhydroxylamine to prepare 1,3-diamino-2,4,6-trinitrobenzene or 1,3,5-triamino-2,4,6-trinitrobenzene
The present invention relates to a process to produce 1,3-diamino-2,4,6-trinitrobenzene (DATB) or 1,3,5-triamino-2,4,6,-trinitrobenzene (TATB) by: (a) reacting at ambient pressure and a...
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5616810 |
Process for the preparation of deactivated anilines
The present invention is directed to a process for the preparation of deactivated anilines, which comprises the step of reacting a compound of formula ( I ) ##STR1## with a dialkylamide in the...
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5616799 |
Process for the preparation of glycoloylanilides
A process for the preparation of glycoloylanilide of the formula (G) ##STR1## is recited that involves reacting a nitrobenzene with hydrogen and, if desired, with a carbonyl compound, in the...
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5576460 |
Preparation of arylamines
A method of preparing an arylamine compound includes reacting a metal amide comprising a metal selected from the group consisting of tin, boron, zinc, magnesium, indium and silicon, with an...
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5576274 |
Fuel and lubricant additives derived from dihydroxy-aromatic compounds
The present invention relates to a novel process for the production of fuel and lubricant additives useful as dispersants and multifunctional viscosity modifiers wherein a dihydroxyaromatic...
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5466871 |
Process for preparing nitroaniline derivatives
A process for preparing a nitroaniline derivative comprising a step of reacting an aromatic nitro compound with an O-alkylhydroxylamine or a salt thereof in the presence of a base and optionally a...
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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 amine;...
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5436371 |
Process for preparing p-nitroaromatic amides and products thereof
A process for preparing p-nitroaromatic amides is provided which comprises contacting a nitrile, nitrobenzene, a suitable base and water in the presence of a suitable solvent system to form a...
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5420354 |
Process of preparing para phenylamines
A process of preparing para phenylenediamines, such as, p-aminodiphenylamine. The process involves contacting nitrobenzene or a substituted derivative thereof with hydrogen and an amine, such as...
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5414128 |
Process for the preparation of N-substituted nitro-p-phenylenediamines
The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## by reaction of compounds of the general formula II ##STR2## with amines of the general...
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5405998 |
Process for the manufacture of cycloalkyl and haloalkyl o-aminophenyl ketones
There is provided an improved method for the production of o-aminophenyl ketones of formula I wherein R is C 3 -C 6 cycloalkyl or C 1 -C 6 haloalkyl. ##STR1## Compounds of formula I are key...
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5399277 |
Fuel and lubricant additives derived from dihydroxyaromatic compounds
The present invention relates to a novel process for the production of fuel and lubricant additives useful as dispersants and multifunctional viscosity modifiers wherein a dihydroxyaromatic...
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5364989 |
1,1,1-trichloro-2-nitroethane production
Methods for the production of 1,1,1-trihalogeno-2-nitroethanes from 1,1-dihalogenoethylene by using nitric acid or its salt and hydrogen chloride or hydrogen bromide or its salt, and for the...
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5300692 |
Process for producing 4-amino-3-fluorobenzotrifluoride
Disclosed is a process for producing 4-amino-3-fluorobenzotrifluoride which comprises reacting 3,4-difluorobenzotrifluoride with anhydrous ammonia (liquid ammonia or gaseous ammonia) under pressure.
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5284976 |
Method of producing primary amines in high yields
A novel process for producing hindered and unhindered primary amines represented by the formula RNH 2 and R*NH 2 in high yields from novel intermediates RBMe 2 or R*BMe 2 wherein R is an organo...
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5276195 |
Process for producing dimethylorganoboranes
A process for preparing a dimethylorganoborane represented by the formula R*BMe 2 wherein R* is a chiral organyl group attached to the boron, B is boron and Me is methyl comprising treating a...
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5276193 |
Process for preparing N-alkyl-substituted aminophenols
A process for preparing an N-alkyl-substituted aminophenol is disclosed, comprising continuously feeding an aldehyde or a ketone to a reaction system containing an organic solvent, a catalyst for...
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5274135 |
Process for preparing aminobenzocyclobutenes
A process for preparing a 3- or 4-aminobenzocyclobutene comprises aminating a 3- or 4-halo- or sulfonyloxybenzocyclobutene reactant with an aminating agent by heating at a temperature from about...
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5262539 |
Process for the preparation of aromatic amines
Electrophilic aromatic compounds can be reacted with sulphenamides in the presence of bases to form the corresponding aromatic amines.
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