| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 560051000 | Aldehyde or ketone group in acid moiety | 27 |
| 20080214859 | Process for the Preparation of Cyclopentanone Derivatives - The present invention relates to the field of organic synthesis and more particularly to a new process for the preparation of an acetal derivative of an alkyl 3-oxo-2-(2-oxoethyl)-1-cyclopentaneacetate. The invention also relates to a method to use said acetal derivative to prepare intermediates useful for the preparation of perfuming ingredients. | 09-04-2008 |
| 20110021806 | SYNTHESIS OF ALPHA-HALO ENONES AND ENALS - A method for preparing an α-halo enal or enone from an unprotected propargyl alcohol and an electrophilic halogen source catalyzed by the combination of a gold catalyst complex and a metal co-catalyst complex is disclosed. The method can be further enhanced by addition of an additive that facilitates suppression of a des-halo derivative. | 01-27-2011 |
| 20110172456 | Method for Producing Aromatic and Heteroaromatic Carboxylic Acids, Carboxylic Acid Esters and Carboxylic Acid Amides - Process for the preparation of aromatic and heteroaromatic carboxylic acids, carboxylic acid esters and carboxamides by the reaction of aromatic or heteroaromatic halides R—X | 07-14-2011 |
| 20120101296 | METHOD FOR PREPARING TRICYCLIC DERIVATIVES - The present invention relates to a method for preparing a tricyclic derivative, and more particulary, to a method for preparing a tricyclic derivative inetermediate with high yield and purity, the method including: introducing a hydroxy group by esterifying and substituting 2-fluoroisophthalic acid compound; introducing a piperidyl group; introducing a hydroxy group through reduction reaction; and then hydrolyzing the resultant compound, and to a method for preparing the tricyclic derivative using said intermediate. According to the method of the present invention, it is possible to provide a tricyclic derivative and an intermediate thereof with high productivity and economic feasibility as well as high purity and yield, by purifying a compound using re-crystallization unlike typical methods of using column chromatography. In addition, the method of the present invention can be usefully used for industrial mass production because sodium borohydride or lithium aluminum hydride with low risk of a fire is used unlike typical methods of using lithium borohydride which is not industrially applicable due to high risk of a fire. | 04-26-2012 |
| 20120190881 | INDANE DERIVATIVES FOR USE AS INTERMEDIATES - A compound of Formula (4), wherein each X is independently fluorine or chlorine; n is 1 or 2; R | 07-26-2012 |
| 20130150611 | PROCESS FOR PRODUCING CARBOXYLIC ACID ESTER - The present invention relates to a process for producing a carboxylic acid ester, comprising a step of oxidizing an aldehyde by mixing an alcohol, carbon dioxide, the aldehyde and at least one compound selected from the group consisting of compounds represented by the formulae (2-1) and (2-2): | 06-13-2013 |
| 20140100383 | AROMATIC ACYLATION WITH CYCLIC ANHYDRIDE FOR PLASTICIZER PRODUCTION - Provided is a process for making non-phthalate plasticizers, by acylating an aromatic compound with a succinic anhydride to form a keto-acid, and then esterifying the keto-acid with C | 04-10-2014 |
| 560052000 | Plural rings bonded directly to the same carbonyl in acid moiety | 4 |
| 20090187040 | FENOFIBRIC ACID POLYMORPHS; METHODS OF MAKING; AND METHODS OF USE THEREOF - Disclosed are new methods of making the fenofibric acid polymorphs as well as formulations prepared therefrom and uses thereof. | 07-23-2009 |
| 20100185008 | Method for Producing Fenofibrate - Method for producing fenofibrate from fenofibric acid by in situ preparation of fenofibric acid chloride by means of the action of a chlorinating agent on the acid then by reaction with isopropanol without isolation of the acid chloride. | 07-22-2010 |
| 20110282091 | BENZOPHENONE COMPOUND - A benzophenone compound is represented by the following formula (I): | 11-17-2011 |
| 20120065421 | NOVEL METHOD OF SYNTHESIZING FENOFIBRATE - A novel process for the synthesis of fenofibrate, includes reacting a metal salt of fenofibric acid with an isopropyl halide, in a solvent system composed of a mixture of dimethyl sulfoxide and a C | 03-15-2012 |
| 560053000 | Oxy in acid moiety | 14 |
| 20090023944 | OPTICALLY ACTIVE PPAR-ACTIVATING COMPOUND INTERMEDIATE AND METHOD FOR PRODUCING SAME - The present invention provides a production intermediate for compound (A-1) and a method for producing the intermediate at high yield and high optical yield. | 01-22-2009 |
| 20090187041 | ESTERS OF (2-HYDROXY-3-OXO-CYCLOPENT-1-ENYL) ACETIC ACID AND THEIR USE FOR PREPARING (-)-R-HOMOCITRIC ACID GAMMA-LACTONE, (+)-S-HOMOCITRIC ACID GAMMA-LACTONE AND THE CORRESPONDING (-)-R-HOMOCITRIC ACID AND (+)-S-HOMOCITRIC ACID SALTS - Archiral (2-hydroxy-3-oxo-cyclopent-1-enyl) acetic acid) alkyl, alkylphenyl and phenyl esters, and a simple and efficient method for the synthesis of both enantiomers of homocitric acid gamma-lactone and the corresponding salts from these esters are described. The method is based on asymmetric oxidation of esters, and the steps of basic and acidic hydrolysis and final acidic lactonization of the homocitric acid into homocitric acid gamma-lactone. The homocitric acid salts are obtained after basic treatment of homocitric acid gamma-lactone. The esters, conditions and reagents used in chemical conversion and separating products are important constituents affording efficient and simple method for production of homocitric acid gamma-lactone and homocitric acid salts. | 07-23-2009 |
| 20100099908 | TRIS(FORMYLPHENYL) AND NEW POLYNUCLEAR POLYPHENOL DERIVED THEREFROM - A novel tris(formylphenyl) according to the following general formula and polynuclear phenol derived therefrom, which are useful as a material for heat resistant materials, material for photosensitive resist compositions, epoxy resin material or hardener, developer or anti-fade agent for thermosensitive recording materials, or sterilizer, fungicide, antioxidant, etc: | 04-22-2010 |
| 20100240922 | Sidewall-functionalized carbon nanotubes, and methods for making the same - The invention provides a method of functionalizing the sidewalls of a plurality of carbon nanotubes with oxygen moieties, the method comprising: exposing a carbon nanotube dispersion to an ozone/oxygen mixture to form a plurality of ozonized carbon nanotubes; and contacting the plurality of ozonized carbon nanotubes with a cleaving agent to form a plurality of sidewall-functionalized carbon nanotubes. | 09-23-2010 |
| 20110028752 | NOVEL BIS(FORMYLPHENYL) COMPOUND AND NOVEL POLYNUCLEAR POLYPHENOL COMPOUND DERIVED FROM THE SAME - A bis(formylphenyl) compound expressed by general formula (1) is manufactured by, for example, using a corresponding bis(hydroxy-formylphenyl) compound as the direct material and causing it to react with a halogenated alkoxycarbonyl hydrocarbon in the presence of a base according to a known phenylether manufacturing method. | 02-03-2011 |
| 20110172457 | TETRAKIS(ETHER-SUBSTITUTED FORMYLPHENYL) AND NEW POLYNUCLEAR POLYPHENOL DERIVED FROM THE SAME - Disclosed are tetrakis(ether-substituted formylphenyl) expressed by General Formula (1), as well as polynuclear polyphenol derived from such tetrakis(ether-substituted formylphenyl): | 07-14-2011 |
| 20110201838 | SYNTHESIS OF 4-[3-(2,6-DIMETHYLBENZYLOXY)PHENYL]-4-OXOBUTANOIC ACID - The compound 4-[3-(2,6-Dimethylbenzyloxy)phenyl]-4-oxobutanoic acid (DPA) is synthesized from 1-[3-(2,6-Dimethylbenzyloxy)-phenyl]-ethanone (DPE) via the intermediate 4-[3-(2,6-Dimethylbenzyloxy)phenyl]-4-oxobulanoic acid ethyl ester (DPAE). | 08-18-2011 |
| 20120004442 | SYNTHESIS OF (PHENYLALKYLOXY)PHENYL-OXOBUTANOIC ACIDS - A method for synthesizing (phenylalkyloxy)phenyl-oxobutanoic acid compounds is described. The corresponding (phenylalkyloxy)acylphenyl compound is halogenated, giving the alpha haloketone. The halide is displaced by the anion of a di-alkyl malonate to give a substituted malonic ester. Hydrolysis of the ester and decarboxylation of the diacid gives the desired product. | 01-05-2012 |
| 20120108839 | PROCESS FOR PREPARING PROSTAGLANDIN DERIVATIVES - The present invention relates to a process for preparing a prostaglandin derivative and an intermediate therefor. In accordance with the present invention, the prostaglandin F (PGF) derivative can be efficiently prepared with high purity by removing the protecting group of a protected prostaglandin E (PGE) derivative obtained from conjugate addition and then stereoselectively reducing the ketone group on the cyclopentanone ring of the PGE derivative. | 05-03-2012 |
| 20120289735 | NOVEL BIS(FORMYLPHENYL) COMPOUND AND NOVEL POLYNUCLEAR POLYPHENOL COMPOUND DERIVED FROM THE SAME - A bis(formylphenyl) compound expressed by general formula (2) is useful as a photo-sensitive resist material: | 11-15-2012 |
| 20130296599 | PHENYLGLYOXYLIC ACID DERIVATIVES AND THEIR PREPARATION AND USE - The invention provides novel phenylglyoxylic acid derivatives, which may be useful as intermediates for preparing stereoisomerically enriched drug compounds. The invention also provides methods of making phenylglyoxylic acid derivatives, and uses of phenylglyoxylic acid derivatives. | 11-07-2013 |
| 20140107372 | METHOD FOR PRODUCING CYCLOPENTANONE COMPOUND, AND INTERMEDIATE COMPOUND - In order to provide a novel method for producing a cyclopentanone compound, the present invention is a method for producing a cyclopentanone compound represented by the formula (I). The method includes the steps of: substituting the group represented by Y by a hydrogen atom by allowing a compound represented by the formula (III) or an intermediate compound obtained from the compound represented by the formula (III) to react with a catalyst or a halogenating agent; and substituting, by hydrogen atoms, (i) the group or the atom represented by Z | 04-17-2014 |
| 20160002142 | PHENYLGLYOXYLIC ACID DERIVATIVES AND THEIR PREPARATION AND USE - The invention provides novel phenylglyoxylic acid derivatives, which may be useful as intermediates for preparing stereoisomerically enriched drug compounds. The invention also provides methods of making phenylglyoxylic acid derivatives, and uses of phenylglyoxylic acid derivatives. | 01-07-2016 |
| 20160016884 | NEW TETRAKIS(ETHER-SUBSTITUTED FORMYLPHENYL) - A tetrakis(ether-substituted formylphenyl) expressed by General Formula (1): | 01-21-2016 |
| 560054000 | Polycarboxylic acid | 2 |
| 20120323035 | NOVEL PEROXIDE DERIVATIVES, THEIR PROCESS OF PREPARATION AND THEIR USE IN HUMAN MEDICINE AND IN COSMETICS FOR THE TREATMENT OR PREVENTION OF ACNE - Compounds of the following general formula (I): | 12-20-2012 |
| 20130079544 | DIBENZOYL PEROXIDE DERIVATIVES, PREPARATION METHOD THEREOF AND COSMETIC OR DERMATOLOGICAL COMPOSITIONS CONTAINING SAME - The use of compounds in the treatment of skin disorders is described. In particular, compounds having the general formula (I): | 03-28-2013 |
