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Class 549/240 - Bicyclo ring system having the cyclic anhydride as one of the cyclos


Subclass of Class 549 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein the polycyclo ring system consists of
No. of patents: 63
Last issue date: 07/07/2009


1    
NumberTitleIssue Date
7557223Titanium-vanadium-tin comprising catalyst and process for the preparation of phthalic anhydride
Catalytic compositions of oxides of titanium, vanadium and tin that are suitable for the production of phthalic anhydride by oxidizing o-xylene and/or naphthalene in the gas phase. The catalysts exhibit excellent activity and selectivity. The catalyst contains 2 to ...
07/07/2009
7365228Method for producing unsaturated fatty acids
Disclosed is a method for producing unsaturated fatty acids from unsaturated aldehydes by means of fixed-bed catalytic partial oxidation in a shell-and-tube reactor, characterized in that the reactor includes a reaction zone for producing unsaturated fatty acids, th...
04/29/2008
7319161Method for producing cyclohexane dicarboxylic acids and the derivatives thereof
The invention relates to a process for preparing cyclohexanedicarboxylic acids or derivatives thereof, such as esters and/or anhydrides, encompassing the reaction of diene/maleic acid anhydride mixtures, in particular of butadiene/maleic acid anhydride mixtures or o...
01/15/2008
7151184Preparation of phthalic anhydride
Process for preparing phthalic anhydride by gas-phase oxidation of xylene, naphthalene or mixtures thereof in a shell-and-tube reactor thermostatted by means of a heat transfer medium over three or more different fixed-bed catalysts arranged in zones, wherein the pr...
12/19/2006
6627656Method of treatment using phenyl and biaryl derivatives as prostaglandin E inhibitors and compounds useful therefore
This invention encompasses a method for the treatment or prevention of prostaglandin mediated diseases comprising administering to a mammalian patient a compound of formula I: ##STR1## in an amount that is effective to treat or prevent said prostaglandin ...
09/30/2003
6600053Method of preparing photosensitive resin composition
A 6,6'-dialkyl-3,3',4,4'-biphenyltetracarboxylic dianhydride is prepared by brominating a 4-alkylphthalic anhydride at its 5-position, and coupling the bromination product in the presence of a nickel catalyst; A photosensitive resin composition containing...
07/29/2003
6225475Enhanced production of hydrocarbyl anhydrides
To form a mixture of anhydrides suitable for use as a curing agent for epoxy resins, a mixture formed from maleic anhydride and a liquid monoolefin is heated to produce a reaction mass containing a liquid phase comprised of alkenyl succinic anhydride, mal...
05/01/2001
6177464Ring opening metathesis of alkenes
Methods for performing ring-opening cross-metathesis reactions on solid support are disclosed. Substituted cyclic compounds, libraries of the compounds, and methods of using the compounds to treat bacterial infections are also disclosed....
01/23/2001
5877330Vanadium-containing catalysts, process for manufacturing and use of the same
Vanadium-containing catalysts are obtained by using polyvanadic acid as a source of vanadium. Vanadium-containing catalysts are obtained by mixing catalyst components other than vanadium, or their precursors, with a polyvanadic acid sol which is formed by...
03/02/1999
5672719Process for the preparation of isobenzofurandiones
Isobenzofurandiones are obtained in particularly advantageous manner by the dehydrogenation of tetrahydroisobenzofurandiones in the presence of catalysts at elevated temperature by a process in which distilled tetrahydro-isobenzofurandiones are heated to ...
09/30/1997
5608083Process for the production of phthalic anhydride
The process for making phthalic anhydride by catalytic gas phase oxidation of o-xylene or naphthalene includes feeding a gas containing oxygen and the reactant to a first reactor; operating the first reactor to oxidize the reactant and obtain an effluent ...
03/04/1997
5414094High purity and high yield synthesis of dianhydrides
A process for making a dianhydride product, said process comprising reacting two moles of maleic anhydride and one mole of a vinyl benzene compound in a reaction mixture comprising about 1.5 to 2.0 moles of the vinyl benzene compound per mole of maleic an...
05/09/1995
5292480Acid-anhydride esters as oil field corrosion inhibitors
A corrosion inhibitor with excellent film forming and film persistency characteristics may be produced by first reacting C18 unsaturated fatty acids with maleic anhydride or fumaric acid to produce the fatty acid Diels-Alder adduct or the fatty...
03/08/1994
5262548Phosphorous/vanadium oxidation catalyst
An improvement in the oxidation catalyst used for the partial oxidation of n-butane and containing vanadium and phosphorus, zinc and lithium mixed oxides which comprises adding a molybdenum compound modifier in an amount of from about 0.005 to 0.025/1 Mo/...
11/16/1993
5237074Process for production of methyltetrahydrophthalic anhydride
This invention provides a process for producing methyltetrahydrophthalic anhydride characterized in that maleic anhydride and a C5 fraction are subjected to Diels-Alder reaction in the presence of a radical polymerization inhibitor and oxygen. ...
08/17/1993
51985545-(2,4-Dioxotetrahydro-3-furanylmethyl)norbornane-2,3-dicarboxylic acid anhydride and process for production thereof
A novel compound 5-(2,4-dioxotetrahydro-3-furanylmethyl)norbornane-2,3-dicarboxylic acid anhydride has been provided. The compound is prepared by hydrogenating 5-(2,4-dioxotetrahydro-3-furanylmethyl)-5-norbornene-2,3-di-carboxylic acid anhydride. The...
03/30/1993
5185454Process for the preparation of symmetrical diarylacetylenes
Symmetrical diaryl-acetylenes can be prepared by reacting an aryl halide with acetylene in the presence of a palladium catalyst and a base. If the acetylene is introduced into the liquid reaction mixture using a high intensity gas dispersion means, the ar...
02/09/1993
5059697Preparation of halogenated phthalic anhydrides
A process for the aromatization of 4-chlorotetrahydrophthalic anhydride and 4,5-dichlorotetrahydrophthalic anhydride which comprises heating a solution of either substance in the presence of activated carbon and in the partial absence of air....
10/22/1991
5003088Method for the preparation of halophthalic anhydrides
Halophthalic anhydrides are prepared by reaction of chlorine with a saturated or partially saturated halophthalic anhydride at a temperature of 200° to 500° Celsius....
03/26/1991
5003085Acid anhydrides and dianhydrides of disubstituted maleic anhydrides
A process is disclosed for preparation of anhydrides containing additional carboxylic acid moieties and dianhydrides of disubstituted maleic anhydride compounds wherein the acid anhydrides and dianhydrides retain their alkene character. The resulting alke...
03/26/1991
4978760Preparation of halogen substituted phthalic anhydride
A process for the preparation of halogen substituted phthalic anhydrides of the formula: ##STR1## wherein x is a halogen, by the reaction of a halogen substituted tetrahydrophthalic phthalic anhydride of the formula ##STR2## or a geminal di...
12/18/1990
4822878Cyclic anhydride derivatives of chromophors
Novel chromophor derivatives of cyclic anhydrides are provided which have the ability to react with a variety of organic substrates forming adducts which are useful in analytical techniques for the detection and measurement of biological compounds....
04/18/1989
4797488Psychotropic polycyclic imides
Substituted imides of the following formula are antipsychotic, anxiolytic agents with very little extrapyramidal side effects: ##STR1## in which X is --O--, --S--, --SO--, --SO2 --, --CR3 R4 -- where R3 and...
01/10/1989
4785114Quinophthalone dyes
Quinophthalone dyes of the formula ##STR1## where X is O or NC--C--R, where R is cyano, unsubstituted or N-substituted carbamyl, carboalkoxy, quinazolonyl, quinoxalinonyl, benzimidazolyl or benzothiazolyl and the rings A, B, the quinoline system and/...
11/15/1988
4785120Process for preparing substituted phthalic anhydrides
Yield and assay (purity) improvements in the reaction of bromine and the Diels-Alder addition product of maleic anhydride and a conjugated diene in the presence of a nitrogenous acid acceptor are realized in the instant process. The heating time after com...
11/15/1988
4684737Process for producing substituted phthalic acid compounds
A process for producing a substituted phthalic acid which comprises heating a substituted tetrahydrophthalic acid compound having a substituent in at least one of the 3-, 4-, 5- and 6-positions in the presence of sulfur to dehydrogenate it, and heat-treat...
08/04/1987
4661630Carboxylic acid amides and their derivatives
Described herein are novel carboxylic acid amide compounds or carboximide compounds represented by the general formula: ##STR1## wherein Z represents either the monoamido radical of an aromatic or cycloaliphatic ortho dicarboxylic acid or the amide o...
04/28/1987
4650880Purification of substituted phthalic anhydrides
A process for purifying crude substituted phthalic anhydrides, e.g. 4-methylphthalic anhydride, derived from the dehydrogenation in the presence of bromine of a Diels-Alder addition product of a conjugated diene, e.g. isoprene, and maleic anhydride. In th...
03/17/1987
4596867Disubstituted maleic anhydride compounds
Di-substituted maleic anhydride compounds are disclosed of the structural formula ##STR1## wherein R and R1 are selected from the group consisting of aliphatic and phenyl moieties, and R2 is a divalent aromatic moiety. Poly...
06/24/1986
4564687Process for preparing substituted phthalic anhydrides
A process for preparing substituted phthalic anhydrides, e.g. 4-methylphthalic anhydride, in which the Diels-Alder addition product of a conjugated diene, e.g. isoprene, and maleic anhydride is reacted with sulfuryl chloride in the presence of pyridine an...
01/14/1986
4560773Process for preparing substituted phthalic anhydrides
A process for preparing substituted phthalic anhydrides, e.g. 4-methylphthalic anhydride, in which the Diels-Alder addition product of a conjugated diene, e.g. isoprene, and maleic anhydride is reacted with bromine in the presence of a catalytic quantity ...
12/24/1985
4560772Preparation of substituted phthalic anhydrides
A process for preparing substituted phthalic anhydrides, example 4-methylphthalic, in which the Diels-Alder addition product of a conjugated diene, example isoprene, and maleic anhydride is reacted with sulfur in the presence of a catalyst. The catalyst i...
12/24/1985
4559405Process for preparing substituted phthalic anhydrides
A process for preparing substituted phthalic anhydrides, e.g. 4-methylphthalic anhydride, in which the Diels-Alder addition product of a conjugated diene, e.g. isoprene, and maleic anhydride is reacted with bromine in the presence of an acid acceptor. Typ...
12/17/1985
4546110Pheromones
Compounds which are ଲ-farnesene derivatives obtainable as a Diels-Adler adduct of ଲ-farnesene and a dienophile or by a modification of such an adduct in a manner as defined herein are of value in pest control, particularly in the control of ap...
10/08/1985
4499298Process for the production of esters
A process is described for the preparation of aryl esters such as benzyl acetate by reacting an aryl alkyl compound such as toluene with a carboxylic acid such as acetic acid and oxygen in the presence of a catalytically effective amount of a catalyst com...
02/12/1985
4393253Hydroxylation of olefins
A method for preparing polyols such as diols by catalytic hydroxylation of an olefinic compound by reacting the olefinic compound with an organic hydroperoxide and water in the presence of a catalyst comprising osmium compound and a specific halide co-cat...
07/12/1983
4388470Certain substituted cyclobutane dicarboxylic acid anhydrides
Novel rust inhibitors for hydrocarbon fuels and oils are provided. Also, novel photo-adducts of dimethylmaleic anhydride and olefins useful as rust inhibitors....
06/14/1983
4371688Substituted cyclohexane-1,2-dicarboxylic anhydrides and epoxy resins containing same
In accordance with the present invention, there is provided a substituted cyclohexane-1,2-dicarboxylic anhydride (CHDA) having the structural formula: ##STR1##...
02/01/1983
4351842N-Cyclopropylisoindolines
Compounds of the general formula: ##STR1## in which A is a benzene ring or a carbocyclic aromatic group consisting of two or three fused benzene rings, the group A being linked to the nitrogen containing ring at two adjacent carbon atoms and the benz...
09/28/1982
4332733Process for liquefying acid anhydride
A normally solid Diels-Alder reaction product between maleic anhydride and decatriene can be liquefied by heat-treating at from 60° to 250° C. for from 10 minutes to 10 hours in the presence of a compound selected from the following groups (a) to (e): (...
06/01/1982
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