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9029603 Process for preparing alkylated p-phenylenediamines  
A process for preparing alkylated p-phenylenediamine having the steps of reacting aniline and nitrobenzene in presence of a complex base catalyst to obtain 4-aminodiphenylamine intermediates,...
8921600 Process for producing carbon fillers having covalently bonded amino groups  
The invention relates to a process for producing carbon fillers having covalently bonded amino groups, by converting a mixture comprising carbon fillers and alkali metals and/or alkaline earth...
8828916 Method to prepare nonylated diphenylamine using recycle sequential temperatures  
The present invention relates to a process for preparing nonylated diphenylamines which improves nonene usage by recycling and reusing stripped nonene from an earlier process. The process...
8329952 Process for the preparation of O-desmethylvenlafaxine succinate polymorphic forms  
The present invention relates to process for the preparation of novel crystalline Desmethylvenlafaxine succinate polymorphic Forms-A, B. The present invention also relates to novel processes for...
8236988 Preparation of 2-(1,3-dimethylbutyl)aniline and other branched alkyl-substituted-anilines  
Methods are provided for preparing branched alkyl-substituted-anilines, such as 2-(1,3-dimethylbutyl)aniline. Such methods comprise combining aniline, an alkyl-substituted-1-alkene, such as...
7928265 Antioxidant compositions of octylated diphenylamines and method of their preparation  
Method of preparation of antioxidant composition on the basis of diphenylamine by catalytic alkylation of diphenylamine by an threefold excess of diisobutylene with regard to diphenylamine in the...
7847030 Diphenylamine functionalization of poly-α-olefins  
Provided is a process for making a diphenylamine-functionalized poly-α-olefin. The process has the following step: reacting an amount of a poly-α-olefin having a terminal double bond with a...
7674935 Crystal forms of O-desmethylvenlafaxine  
Methods for preparing crystalline forms of O-desmethylvenlafaxine are described.
7605290 Processes for the synthesis of O-desmethylvenlafaxine  
The present invention describes processes for the preparation of O-desmethylvenlafaxine and tridesmethylvenlafaxine, which may be used as an intermediate in preparing O-desmethylvenlafaxine.
7528283 Process for preparing diamines and polyamines from the diphenylmethane series  
The invention provides an improved process for preparing diamines and polyamines from the diphenylmethane series by reacting aniline and formaldehyde in the presence of an acid catalyst, the...
7456319 Para-alkylation of aromatic primary amines  
A method is provided for producing primarily para alkyl aromatic amines by alkylating a primary aromatic amine with an olefin in the presence of an acid activated clay.
7435854 Methods for preparing O-desmethylvenlafaxine  
The present invention provides an efficient method of making O-desmethyl-venlafaxine.
7390927 Process for preparing 3-aminophenylacetylenes  
A process for preparing a 3-aminophenylacetylene compound of formula (5), including: a) reacting a 3-haloaniline compound of formula (1) with an acetylene compound of formula (2) in the presence...
7378554 Ring alkylation of aniline or an aniline derivative using ionic liquid catalysts  
A process for ring-alkylating aniline or an aniline derivative in which aniline or an aniline derivative is reacted with an alkylating agent in the presence of an ionic liquid which includes a...
7342133 Substituted amino compounds as 5-HT/NA uptake inhibitors  
The invention relates to substituted amino compounds, to processes for their preparation, to pharmaceutical formulations containing these compounds and to the use of these substances in the...
7253321 Process for the preparation of polyamines of the diphenylmethane series at a low degree of protonation  
The invention provides a process for the preparation of polyamines of the diphenylmethane series. This process comprises a) reacting aniline and formaldehyde in a molar ratio of 1.5:1 to 6:1, in...
7145038 Alkylation of a diphenylamine compound in ionic liquid  
A process for alkylation of a diphenylamine compound in an ionic liquid. The use of an ionic liquid permits convenient separation of the alkylated reaction product from the reaction mixture.
7005553 Method for the nitration of phenolic compounds  
A method for the regioselective ortho-directed nitration of phenolic compounds useful for the preparation of ortho-nitro-phenols according to formula (I) is described.
6639102 Process for producing polyisocyanates of the diphenyl methane series having a reduced color value  
Polyisocyanates of the diphenyl methane series having reduced color values are obtained by a) reacting aniline and formaldehyde in the presence of an acid catalyst to form a polyamine, b)...
6624201 HIGH PURITY (1R,2S,4R)-(−)-2-&lsqb (2′-&lcub N,N-DIMETHYLAMINO&rcub -ETHOXY)&rsqb -2-&lsqb PHENYL&rsqb -1,7,7 -TRI-&lsqb METHYL&rsqb -BICYCLO &lsqb 2.2.1&rsqb HEPTANE AND PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF AND A PROCESS FOR THE PREPARATION OF THESE COMPOUNDS AS WELL AS MEDICAMENTS CONTAINING 1 OR MORE OF THESE COMPOUNDS AND THEIR USE  
The invention relates to high purity (1R,2S,4R)-(−)-2-[(2′-{N,N-dimethylamino}-ethoxy)]-2-[phenyl ]-1,7,7-tri-[methyl]-bicyclo[2.2.1]heptane and pharmaceutically acceptable acid addition salts...
6566571 Method of producing biaryls  
Process for preparing monofunctional, bifunctional and/or polyfunctional biaryls of the formula (I) Ar—Ar′ (I)by reacting haloaromatics of the formula (II)Ar—X (II)with boron compounds of the...
6392111 Method for producing olefins  
Olefins containing aromatic substituents are synthesized without the addition of phosphonium salts or phosphanes with the aid of a PdII compound as a catalyst in the presence of...
6355839 Alkylation of diphenylamine with polyisobutylene oligomers  
A process for preparation of alkylated diphenylamine antioxidant which comprises alkylating diphenylamine with a polyisobutylene in the presence of a clay catalyst, wherein the polyisobutylene has...
6315925 Nonylated diphenylamines  
The invention relates to a mixture of nonylated diphenylamines, especially dinonylated diphenylamines, and to a technically advantageous methodological process for the preparation of that mixture...
6215035 Process for the preparation of aralkylated aromatic compounds using heterogeneous catalyst  
The invention relates to a process for the preparation of aralkylated aromatic compound with both small and large size aralkylating agents; wherein the catalyst used is heterogeneous solid...
6204412 Method of manufacturing alkylated diphenylamine compositions and products thereof  
A method of manufacturing an alkylated diphenylamine composition to generate an alkylated diphenylamine composition with relatively low amounts of unsubstituted diphenylamine, based on the total...
6028225 Method of making hydroxy-substituted hydroxylamines and color developers containing same  
Hydroxy-substituted hydroxylamine antioxidants can be prepared by reacting hydroxylamine or a mono-substituted hydroxylamine, in free base form, with an epoxide. The antioxidant reaction product...
5962739 Process for the preparation of N,N- dialkylaminophenyl alkanols  
The present invention provides a process for the production of an N,N-dialkylaminophenyl alkanol having the formula: ##STR1## in which R1 and R2, independently, are C1 -C4 alkyl, R3 is hydrogen,...
5902902 Process for the industrial preparation of aminoacetylenes  
A process for the preparation of 3-aminophenylacetylene derivatives of formula: ##STR1## wherein R1 is as defined in the disclosure ##STR2## wherein Y is as defined in the disclosure...
5817831 Alkylation of aromatic amines using a heterpoly catalyst  
Aliphatic hydrocarbyl-substituted aromatic amines are prepared by reacting an aromatic amine and an aliphatic hydrocarbylating agent, such as an olefin, in the presence of a heteropolyacid...
5750787 Liquid alkylated diphenylamine antioxidant  
A process for monoalkylating diphenylamine using a clay catalyst is disclosed which results in a reaction product having substantial amounts of desirable monoalkylated diphenylamine and minimal...
5734084 Synthesis of alkylated aromatic amines  
An improved method for making alkylated aromatic amines is disclosed. The method includes a new alkylating catalyst system comprising an aromatic amine alkylating catalyst and a non-catalyst solid...
5659084 Processes and intermediates for the preparation of 2-substituted benzaldehydes  
Processes for preparing 2-substituted benzaldehydes of general formula (I), wherein: R1 is CH2 CH2 --(L1)p --(CH2)q --(L2)r --CH2 --(T)2 --Z; L1 and L2 are independently CH2 CH2, CHCH or C.tbd.C;...
5633407 Process for preparing substituted aromatic amines  
A process for preparing substituted aromatic azo compounds is provided which comprises contacting a nucleophilic compound and an azo containing compound in the presence of a suitable solvent...
5599995 Electrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediate  
An electrophotographic photoconductor comprises an electroconductive substrate and a photoconductive layer formed thereon comprising as an effective component at least one pyrenylamine derivative...
5571453 Stabilized polyether polyol and polyurethane foam obtained therefrom  
A stabilizer composition useful as an additive for polyether polyols, particularly those employed in the manufacture of polyurethane foams, is provided which comprises a...
5520848 Mixtures and compositions containing phenothiazines  
A mixture containing phenothiazines which is obtainable by reacting a mixture of diphenylamines comprising TBL ______________________________________ 1 to 5% by weight a) diphenylamine of 8 to 18%...
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...
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...
5283363 Process for the preparation of (hetero)arylalk(en/in)ylamines and (hetero)arylalkinylamines  
The invention relates to a new process for the preparation of (hetero)arylalk(en/in)ylamines of the formula (I) ##STR1## in which A represents ethane-1,2-diyl (ethylene, dimethylene, --CH2 --CH2...
5276194 Polyfluoroalkylation of aromatic compounds  
A process is provided for the catalytic perfluoroalkylation of aromatic compounds, wherein a perfluoroalkyl iodide or mixture of iodides is reacted with an aromatic compound in the presence of an...
5243116 Alkylation of aromatic compounds  
Alkylated benzenes such as ethylbenzene and cumene are produced by alkylation and/or transalkylation in the presence of an acidic mordenite zeolite catalyst having a silica/alumina molar ratio of...
5214211 Alkylation of diarylamines with olefins using rare earth modified pillared clays  
Rare earth pillared clays, and especially cerium and lanthanum aluminum chlorohydrite pillared clays, are quite effective catalysts in the alkylation of diaryl amines at temperatures in the range...
5214186 Process for the preparation of arylidine dyes using an active methylene compound  
A process for the preparation of arylidene dyes comprises the reaction of an aromatic amine with an enolate salt of a formylated active methylene compound in the presence of a sulfonyl halide...
5171890 Process for preparing methyl- and ethyl-substituted primary anilines  
A process is disclosed for the preparation of methyl- and ethyl-substituted anilines by contacting anilines of specified formula at about 250°-525° C. and about 10 kPa-10 MPa of pressure in the of...
5171915 Alkylaromatic lubricants from alpha-olefin dimer  
It is disclosed that aromatic compounds can be alkylated with mono-olefinic HVI-PAO dimer in contact with an acidic catalyst to produce novel alkylated aromatic compositions. It has been found...
5132475 Quaternary ammonium fluoride catalyzed halogenation of carbon acids  
A process is disclosed for chlorinating, brominating and/or iodinating an organic substrate containing both a single acidic hydrogen atom and at least one electron withdrawing group attached to...
5124483 Ortho-alkylation of aromatic amines  
Aromatic diamines, such as toluenediamine, are alkylated in the ortho position by heating the diamine in the presence of an aluminum alloy, aluminium chloride and, optionally, zinc, and then...
5087754 Process for the preparation of N,N-dialkylaniline  
N,N-dialkylanilines can be prepared by reacting the anilines on which they are based with lower alcohols or with the corresponding ethers, at an increased temperature in the gas phase in the...
5081302 Selective C-alkylation of aniline in the presence of zeolite catalysts to para-aniline  
The selective ring-alkylation of anilines comprising providing a mixture of a lower alkanol and an aniline, exposing said mixture to a temperature of from 300° C. to 500° C., preferably from 350°...

Matches 1 - 50 out of 133 1 2 3 >