|7279604||Boron carbide as an effective Friedel-Crafts type catalyst|
The compound boron carbide, B4C, is an effective catalyst for the alkylation and acylation of aromatics to produce polybenzyls, ketones, esters and alkyl benzenes. The catalyst boron carbide is also effective in conducting intramolecular Friedel-Crafts ty...
|7253323||Method for the production of benzophenones|
A process for preparing benzophenones of the formula I, where X may be chlorine, hydroxyl, methoxy or C1-C6-alkylcarbonyloxy, and Y may be chlorine or bromine, by reacting an acid chloride o...
|7247742||Recycling polyethylene naphthalate containing materials in a process to produce diesters|
A process for preparing a dialkylester of a naphthalenedicarboxylic acid comprising directing a liquid phase reaction mixture comprising a low molecular weight alcohol, a naphthalenedicarboxylic acid, a dialkylester of a naphthalenedicarboxylic acid, and a polyethyl...
|7238832||Production method of a coupling compound|
There is provided a method for producing a coupling compound of formula (1): (Y—)(n−1)R1—R2—(R1)(n′−1) (1) wherein R1, R2 n and n′ are as defined belo...
|7202384||Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate|
The present invention relates to a process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate, in which 4-(2-nitrophenyl)-n-butyronitrile is converted to 4-(2-nitrophenyl)-n-butyric acid. ...
|7148384||Preparation of fluorinated acetophenones|
The invention relates to a process for preparing fluorinated acetophenones from fluorinated aryl compounds in the presence of N-hydroxyphthalimide and the use thereof. ...
|7129367||Phosphine compound, its intermediate, its complex with palladium and a manufacturing method of unsaturated compounds by using the palladium complex|
Palladum-phosphine complexes obtained by reacting a 5 compound of formula (1) below with a palladium compound: F(I) (wherein R1 is a hydrogen atom, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R2 and R3
|7119235||Process utilizing zeolites as catalysts/catalyst precursors|
According to one aspect of the invention, there is provided the use of an organic ionic liquid in a zeolite-catalysed process, for example an acylation, alkylation, isomerisation or hydrocracking process in which zeolites act as catalysts or catalyst precursors, esp...
|7087789||Methods for nucleophilic fluoromethylation|
A novel, convenient and efficient method for trifluoromethylation of substrate compounds is disclosed. Particularly, alkoxide and hydroxide induced nucleophilic trifluoromethylation of carbonyl compounds, disulfides and other electrophiles, using phenyl trifluoromet...
|6984760||Acylation of aromatic compounds|
This invention particularly relates to a process for the acylation of aromatic compounds by an acylating agent for preparing corresponding acylated aromatic compounds, using a solid catalyst. ...
|6977313||Production process of 2,7-dibromofluorenone|
A process is provided for the production of 2,7-dibromofluorenone. According to the process, a 2,7-dibromofluorene-contianing raw material is oxidized with molecular oxygen in the presence of a phase transfer catalyst such as a quaternary ammonium salt in a heteroge...
|6943257||Process for preparation of aromatic halides from aromatic amines|
The present invention provides a process for preparing an aromatic bromide or aromatic iodide from an aromatic amine derivative using nitrite anion and halodimethylsulfonium halide generated in situ from hydrobromic acid/DMSO or hydriodic acid/DMSO. The process for ...
|6933405||User- and eco-friendly hypervalent iodine reagent and method of synthesis|
The present invention is a user- and eco-friendly hypervalent iodine reagent (mIBX) capable of selectively oxidizing allylic and benzylic alcohols in water and other eco-friendly solvents and having generally the following structure:
The invention relates to bis(alkylthio)carbenium salts of the formula I with the stated definitions for R1, R2, R3 and Y−, and to a process for the preparation th...
|6872855||Method for expedient synthesis of [18F]-labeled α-trifluoromethyl ketones|
The present invention is directed to a convenient method of synthesizing radiolabeled α-trifluoromethyl ketones by a fluorination reaction. The present invention also relates to imaging agents and markers for identifying cell proliferation, or viral infection. The ...
|6855850||Method of manufacturing fluorine compounds, and a method of recovering or regenerating precursors of fluorinating agents|
To provide a practical method of manufacturing fluorine compounds in a small number of steps that can carry out fluorination reaction of substrates using easily available fluorinating agents that can be inexpensively produced industrially, and recover precursors of ...
|6849768||Sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide|
Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity. ...
|6825383||Catalytic process for regiospecific chlorination of alkanes, alkenes and arenes|
The present invention provides a process for regiospecific chlorination of an aromatic or aliphatic compound with a chlorine source comprising a metal chloride and other than Cl2 and SO2Cl2 in presence of hypervalent iodine catalyst ...
|6730814||Clay based catalytic process for the preparation of acylated aromatic ethers|
This invention relates to a process for the preparation of acylated aromatic ethers, in particular the acylation of anisole (methoxybenzene) and veratrole (1,2-dimethoxybenzene) for the preparation of corresponding acylated aromatic ether, namely, p-methoxyacetophen...
|6667422||Process for the preparation of -haloketones|
A process for preparing an -haloketone of the formula (1) ##STR1## where R1 is an optionally heteroatom-containing and optionally substituted hydrocarbon radical, R2 is a hydrogen, alkyl, aralkyl or aryl radical, and X is a halogen...
|6548710||Process for preparing 1-indanones|
The present invention relates to a process for preparing 1-indanones of formula I: ##STR1## and isomers thereof, wherein R1, R2, R3, R4, R5, and R6 independently represent H or a C1
|6525226||Process for preparation of substituted aromatic compound employing friedel-crafts reaction using a reusable basic anionic clay catalyst|
A process for Friedel-Crafts type liquid-phase alkylation or acylation of an aromatic compound using a hydrotalcite-type basic anionic clay catalyst represented by a formula: [(M2+)1-x (M3+)x (OH)2 ]x...
|6476253||Process for preparing monoacetylated hydroquinone compounds|
The present invention relates to a process for preparing monoacetylated hydroquinone compounds of the formula I, ##STR1## to the novel final products of the process and to a process for preparing the precursors....
|6437191||Process for the acylation of aromatic compounds using a reusable solid catalyst comprising indium halide|
A process for the liquid phase acylation of aromatic compounds by acyl halides to corresponding acylated aromatic compounds, using a reusable solid catalyst comprising indium halide represented by a formula: Mx In1-x Ay(a)/s wherein, S is...
|6420608||Process for the preparation of trifluoromethyl acetophenone|
A process for the preparation of a compound of formula I ##STR1## wherein Y is a group that is inert during preparation of the compound and m is from 0 to 4 is described. The process broadly involves the steps of a) reacting a compound of formula II ...
|6417357||Coupling reactions with palladium catalysts|
This invention relates to a novel, inventive process for the preparation of biphenyls or aromatic olefins by coupling reactions of the Suzuki coupling and Heck coupling type, using allylpalladium catalysts of the μ-halo(triisopropylphosphine)(η3
|6410796||Process for the preparation of poly(fluoroalkyl)acetophenones|
Acetophenones which are di- or polysubstituted by fluoroalkyl groups on the aromatic ring are prepared in a particularly advantageous manner from the corresponding fluoroalkylanilines and acetaldoxime by preparing a corresponding diazonium salt mixture fr...
|6348631||Method for acylation or sulphonylation of an aromatic compound|
The present invention relates to a process for the acylation or sulphonylation of an aromatic compound. More particularly, the invention relates to a process for the acylation or sulphonylation of an activated or deactivated aromatic compound. The invention is...
|6303812||Isolation of products from selective dehalogenation of haloaromatics|
Disclosed is a method of isolating the aromatic product formed when a substrate having the general formula ##STR1## is dehalogenated, forming a product mixture of copper salts and aromatic product, where X is the halogen removed from the substrate to form...
|6300522||Process for the preparation of 2-hydroxyalkyl halophenones|
A process is provided for the preparation of compounds of Formula (1): ##STR1## wherein X1 and X2 are each independently H, Cl or F, provided that at least one of X1 and X2 is Cl or F; one of R1 and R...
|6281400||Process for preparation of a catalytic microcomposite from a silicate and a highly fluorinated ion exchange resin|
The present invention relates to a process for preparing a microcomposite comprising a highly fluorinated ion-exchange polymer containing pendant sulfonate functional groups, said polymer existing as aggregated particles entrapped within and dispersed thr...
|6274770||Process for preparation of aromatic compounds|
##STR1## There is disclosed a process for the preparation of a compound of general formula (I), wherein Y and Z each independently represent a fluorine atom or a hydroxy group, and a, b, c and d independently represent 0, 1, 2 or 3 provided that the sum o...
|6271421||Process for selective mono-debromination of polybromoalkyl aryl or heteroaryl ketones|
A process for selectively debrominating polybromoalkyl aryl ketones and polybromoalkyl heteroaryl ketones is disclosed. The process comprises contacting an alpha-polybrominated ketone with an alkali metal sulfite in the presence of a C2 -C...
|6211413||Process for the preparation of phenyl alkyl ketones and benzaldehydes|
There is provided a process for the preparation of compounds of formula I ##STR1## wherein: X is H or F, Y is CF3 or F and R1 is hydrogen or C1 -C2 alkyl; in which process ##STR2## (1) a compound of formula II, where...
|6211399||Pressurized chlorination and bromination of aromatic compounds|
Disclosed is a method of adding 1 to 4 chlorine or bromine atoms to an aromatic ring of compound that has at least one electron-withdrawing groups on that ring. The aromatic compound is reacted with a chlorinating agent or a brominating agent in the prese...
|6194599||Process for preparing biaryl compounds|
The present invention provides a process for preparing biaryl compounds comprising reacting an arylzinc reagent with an arylchloride in the presence of a nickel catalyst or a palladium catalyst. The present invention specifically provides a process for th...
|6184418||Aromatic compound acylation method|
A method for acylating an aromatic compound, specifically an activated or deactivated aromatic compound, is disclosed. The method is suitable for preparing aromatic ketones. The preparation of a catalyst and novel bismuth compounds is also disclosed. Said...
The present invention provides compounds of formula I: ##STR1## wherein R1 is hydrogen or methyl and R2 is alkyl. These compounds are useful as fixatives in fragrance compositions. Processes of making such compounds are also pro...
|6139770||Photoinitiators and oxygen scavenging compositions|
An oxygen scavenging composition or system is provided comprising an oxygen scavenging material, a photoinitiator, and at least one catalyst effective in catalyzing an oxygen scavenging reaction, wherein the photoinitiator comprises a benzophenone derivat...
|6133409||Process for the solid phase synthesis of aldehyde, ketone, oxime, amine, hydroxamic acid and ଲ-unsaturated carboxylic acid and aldehyde compounds|
This invention is directed to a process for the solid phase synthesis of aldehyde, ketone, oxime, amine, hydroxamic acid and ,ଲ-unsaturated carboxylic acid and aldehyde compounds and to polymeric hydroxylamine resin compounds useful therefor....