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7473807 |
Acylation using molecular sieve SSZ-74
The present invention relates to new crystalline molecular sieve SSZ-74 prepared using a hexamethylene-1,6-bis-(N-methyl-N pyrrolidinium) dication as a structure-directing agent, methods for...
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7462650 |
Trifunctional photoinitiators
The Invention relates to novel ketones of formulae (I) and (II) wherein R 1 , R 2 , R 3 and R 4 are, for example, C 1 -C 8 alkyl, R 5 is, for example, hydrogen, A is CI, Br, -0-R 7 , —NR 8 R 9...
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7405328 |
Method for producing alkenone ethers
In a method or producing haloalkenone ethers by addition of a carboxylic acid halide to a vinyl ether and subsequent elimination of hydrogen halide, the improvement comprising carrying out the...
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7321044 |
Synthesis of oxygen-substituted benzocycloheptenes as valuable intermediate products for the production of tissue-selective estrogens
The invention relates to intermediate products and a new process for the production of benzocycloheptene C.
The process for the production of its new intermediate products according to the...
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7307192 |
Process for the preparation of 1-phenylindan photoinitiators
The invention relates to a process for the preparation of a crystalline isomeric mixture of compounds of formulae (I) and (II) which process comprises the following steps: a) the slow addition of...
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7250510 |
Transition metal complexes of N-heterocyclic carbenes, method of preparation and use in transition metal catalyzed organic transformations
The present invention relates to catalysts of transition metal complexes of N-heterocyclic carbenes, their methods of preparation and their use in chemical synthesis. The synthesis, ease-of-use,...
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7211705 |
Phase selective polymer supports for catalysis
Phase-selective soluble polymer supports for catalysts are described. The catalysts utilize polystyrene copolymers having enhanced solubility in nonpolar solvents. Other catalysts of the invention...
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7166749 |
Process for preparing chiral aromatic α-hydroxy ketones using 2-hydroxy-3-oxoacid synthase
A biotransformation process for preparing chiral aromatic-hydroxy ketones in high yields is described, using 2-hydroxy-3-oxoacid synthase, such as AHAS or TSAS. Optionally substituted arylaldehydes...
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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 R 1 is a hydrogen atom, an alkyl group, a cycloalkyl group or a phenyl...
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7091385 |
Acylation using molecular sieve SSZ-71
The present invention relates to new molecular sieve SSZ-71 prepared using a N-benzyl-1,4-diazabicyclo[2.2.2]octane cation as a structure-directing agent, methods for synthesizing SSZ-71 and...
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7084304 |
Acylation using molecular sieve SSZ-70
The present invention relates to new crystalline molecular sieve SSZ-70 prepared using a N,N′-diisopropyl imidazolium cation as a structure-directing agent, methods for synthesizing SSZ-70 and...
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7057079 |
Method of synthesizing alkenone compounds
A method of producing a halogen alkenone ether by attaching carboxylic acid halogenides or carboxylic acid anhydrides to a vinyl ether. According to the invention the method is carried out in the...
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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...
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6919485 |
Benzophenones, the production thereof and their use for controlling plant pathogenic fungi
The invention relates to benzophenones of formula (I), in which the substituents have the following meanings: X represents halogen; R 1 represents hydrogen, halogen, C 1 -C 6 alkyl, halo-C 1 -C 2...
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6818796 |
Method for preparing fluorinated ketones
A subject of the present invention is a process for preparation of fluorinated ketones corresponding to general formula (I) R 1 —CO—R 2 in which R 1 and R 2 are as defined in claim 1,...
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6814895 |
Process for the synthesis of 1-(3,5-bis(trifluoromethyl)phenyl)ethan-1-one
The present invention is concerned with a novel process for the preparation of 1-(3,5-bis(trifluoromethyl)phenyl)ethan-1-one (CAS 30071-93-3). This compound is useful as an intermediate in the...
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6667422 |
Process for the preparation of α-haloketones
A process for preparing an α-haloketone of the formula (1) where R 1 is an optionally heteroatom-containing and optionally substituted hydrocarbon radical, R 2 is a hydrogen, alkyl, aralkyl...
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6642418 |
Processes for preparing intermediates
The invention relates to processes for the preparation of compounds of formula (I), wherein R 1 and R 2 are as defined in the description.
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6630606 |
Acylation reactions of aromatic substrates
Method of performing alkylation or acylation reactions of aromatic substrates under supercritical or near-critical reaction conditions. In particular, a method of performing Friedel-Crafts...
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6593499 |
Process for the preparation of phenyl ketones
The present invention relates to a process for the preparation of phenyl ketones of formula-I, Wherein R represents —COCH 3 , —COC 2 H 5 or —COC 6 H 5 , which comprises acylating the...
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6476253 |
Process for preparing monoacetylated hydroquinone compounds
The present invention relates to a process for preparing monoacetylated hydroquinone compounds of the formula I, to the novel final products of the process and to a process for preparing the...
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6459000 |
Process for the liquid phase acylation of aromatic compounds
The present invention provides a liquid phase process for the acylation of aromatic compound by an acylating agent of the formula (R 5 R 6 R 7 )—Y—Z to obtain the corresponding acylated...
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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...
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6433228 |
Process for preparing 2-halogenated indan-1-ones
2-Halogenoindan-1-ones are prepared in an advantageous manner by converting anilines into diazonium salts and these, with acrylic compounds, into 3-phenyl-1-halogenoproprionic acid derivatives, and...
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6410794 |
Process for preparation of pharmaceutically desired chiral tetralone from tetralones
Improved processes for preparation of tetralones in high enantiomeric purity centers on resolution using simulated moving bed chromatography of a racemic tetralone derivative. Resolution is...
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6384285 |
Process for the preparation of 4′-isobutylacetophenone
The present invention relates to a process for the preparation of 4′-isobutylacetophenone from isobutylbenzene which comprises reactions isobutyl benzene with acetic anhydride as an acylating...
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6372693 |
Substituted 2-(3-alkenyl-benzoyl)-cyclohexane-1,3-diones
The invention relates to 2-(3-alkenylbenzoyl)cyclohexane-1,3-diones of the formula I where the variables have the following meanings: R 1 , R 2 are hydrogen, nitro, halogen, cyano, thiocyanato,...
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6362375 |
Process for the preparation of aryl ketones generating reduced amounts of toxic byproducts
An efficient, cost-effective method useful for the production of aryl ketones that minimizes the generation of toxic byproducts is disclosed. The method utilizes a metal triflate salt to catalyze...
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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...
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6320082 |
Process for acylation of naphthyl ethers
An improved process for the preparation of acyl naphthyl ethers useful as important intermediates for drugs, pharmaceuticals and polyesters by reacting a naphthyl ether with a C2-C5 acid anhydride...
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6316674 |
Process for the preparation of acyl aromatic ethers
An improved process for the preparation of acyl aromatic ethers useful as important intermediates for drugs and pharmaceuticals by reacting an aromatic ether with an acylating agent selected from a...
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6265618 |
Process for the conversion of carboxylic acids to ketones
Disclosed is a process for the preparation of ketones by contacting one or more carboxylic acids with a niobium catalyst at elevated temperatures. The process includes the use of a modified...
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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...
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6194616 |
Acylation method for an aromatic compound
The present invention concerns a process for acylation of an aromatic compound. The acylation process of the invention consists of reacting the aromatic compound with an acylation agent in the...
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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...
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6103938 |
Process for preparing 4-(substituted phenyl)-3,4-dihydro-2H-naphthalen-1-ones
4-(Substituted phenyl)-3,4-dihydro-2H-naphthalen-1-ones, which are useful as intermediates in the preparation of antidepressant agents, are conveniently prepared by reacting 1-substituted...
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6096930 |
Herbicidal cyclohexane-1,3-dione derivatives and their preparation process
The present invention relates to novel cyclohexane-1-3-dione derivatives of formula (1) useful as herbicides and plant-growth regulants, ##STR1## wherein X is selected from the group consisting of...
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6087536 |
Preparation of indene derivatives
A process for preparing indene derivatives of the general formula I ##STR1## where R 1 is a C 1 -C 10 -alkyl radical, a phenyl radical or a C 1 -C 4 -alkyl-substituted phenyl radical and A...
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6031139 |
Preparation of α-fluoroketones
The use of polar organic solvent as the solvent in the direct fluorination, to make an α-fluoroketone, of an enol ester or enol trialkylsilyl ether of a compound containing a tautomerisable ketone...
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5962743 |
Process for preparing acylaromatic compounds
This invention provides a process for preparing acylaromatics comprising reacting an aromatic compound with a carboxylic acid in the presence of a reaction medium comprising polyphosphoric acid and...
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5929284 |
Processes for producing α-halo ketones, α-halohydrins and epoxides
Processes for efficiently producing α-halo ketones, α-halohydrins and epoxides on an industrial scale. The prosesses include one for producing an α-halo ketone of general formula (3) by...
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5925795 |
Processes for the preparation of aryl-β-diketones, arylpyrimidine ketones and crop protection intermediates
This invention relates to processes for the preparation of aryl-β-diketones and aryl-pyrimidine ketones. In addition, this invention relates to the preparation of aryl-β-triketones and dimethyl...
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5852200 |
Cross-coupling of organic compounds using cuprous iodide
Cross-coupling or addition reactions of organic compounds, including acid halides, allylic halides, and α,β-unsaturated carbonyl containing compounds, with organozinc compounds may be readily and...
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5756814 |
Vinyl compound, its synthetic intermediates and processes for producing the same
(1) CF 2 CFO(CF 2 ) n COOR is allowed to react with chlorine or bromine to obtain CF 2 XCFXO(CF 2 ) n COOR', (2) which is allowed to react with a Grignard reagent MgBrC 6 H 3 (CH 3 ) 2 to...
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5750795 |
Process for production of ketone
The present invention provides a process for producing a ketone represented by a general formula RCOR' (wherein R is a C 1 -C 17 alkyl group, a C 7 -C 12 aralkyl group, a C 7 -C 12 aryl group...
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5744071 |
Processes for preparing alkynyl ketones and precursors thereof
The present invention provides processes for making alkynyl ketones and precursors thereof, using less expensive reagents and/or hydrocarbon solvents and/or higher temperatures.
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5679865 |
Process for the preparation of polyhydroxybenzophenones
The invention relates to a process for the preparation of polyhydroxybenzophenones by treating benzoic acid or a derivative thereof with a polyhydroxybenzene or a derivative thereof in the presence...
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5637773 |
Acylation of aromatic ethers/phenols
Aromatic ethers/phenols are acylated, characteristically into hydroxy- and/or alkoxyaromatic alkylketones, and in particular, are acylated in the para-position relative to an alkoxy substituent...
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5621146 |
Process for producing 2,4-dihydroxyacetophenone
A process for producing 2,4-dihydroxyacetophenone is provided wherein resorcinol and acetic acid are reacted in the presence of a proton acid catalyst while removing formed water.
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5583264 |
Para-c5 alky-substituted ethoxycyclohexanes, organoleptic uses thereof and processes for preparing same
Described are compounds defined according to the structure: ##STR1## wherein Z represents para cyclohexylene or para phenylene and wherein R 1 , R 2 and R 3 are the same or different methyl or...
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