| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 544245000 |
Polycyclo ring system having the diazine ring as one of the cyclos
| 290 |
| 544298000 |
Chalcogen bonded directly to diazine ring carbon
| 164 |
| 544322000 |
Nitrogen attached directly to diazine ring by nonionic bonding
| 116 |
| 544295000 |
Plural diazine rings
| 68 |
| 544297000 |
Nitrogen attached directly at 2-position by nonionic bonding and sulfur bonded directly to the nitrogen
| 48 |
| 544333000 |
Additional hetero ring which is unsaturated
| 38 |
| 544243000 |
Phosphorus attached directly or indirectly to the diazine ring by nonionic bonding
| 30 |
| 544335000 |
Chalcogen attached indirectly to the diazine ring by nonionic bonding
| 16 |
| 544334000 |
Halogen attached directly to the diazine ring by nonionic bonding | 5 |
| 20090023923 | 1,3-Bis(Substituted Phenyl)-3-Hydroxypropan-1-One or 2-Propen-1-One Compound, and Salt Thereof - There is provided a novel process intermediate represented by the general formula (1) or (2): | 01-22-2009 |
| 20100160630 | PROCESS FOR PRODUCING TRICHLOROPYRIMIDINE COMPOUND - A process for producing a trichloropyrimidine compound represented by the formula (2): | 06-24-2010 |
| 20130060032 | POTASSIUM FLUORIDE DISPERSION AND PROCESS FOR PRODUCING FLUORINE-CONTAINING ORGANIC COMPOUND USING THE SAME - A potassium fluoride dispersion essentially consisting of potassium fluoride and an aprotic organic solvent having a boiling point higher than that of methanol, which is obtainable by mixing a mixture containing potassium fluoride and 5 to 50 parts by weight of methanol per 1 part by weight of potassium fluoride with the aprotic organic solvent followed by concentrating the obtained mixture, and a process for producing a fluorine-containing organic compound comprising contacting an organic compound having at least one group capable of being substituted nucleophilically with a fluorine atom with the potassium fluoride dispersion. | 03-07-2013 |
| 20140275539 | STABILIZATION OF RADIOIODINATED AND ASTATINATED PHARMACEUTICALS AND IMAGING AGENTS - Provided herein are stabilized radioiodinated and astatinated compounds, and to methods for their preparation. | 09-18-2014 |
| 20150368206 | METHODS FOR PREPARATION OF (4,6-DIHALO-PYRIMIDIN-5-YL)-ACETALDEHYDES - This invention relates to the synthesis of chemical compounds and particularly to methods for the preparation of (4,6-dihalo-pyrimidin-5-yl)-acetaldehydes. The methods involve preparing a compound of the following general formula V from a compound of the following general formula IV through hydrolysis under the action of mercury dichloride and calcium carbonate, according to the following equation: | 12-24-2015 |
| 544294000 |
Polycyclo-carbocyclic ring system having at least three cyclos | 1 |
| 20140243527 | PURIFICATION METHODS FOR BETULONIC ACID AND BOC-LYSINATED BETULONIC ACID, AND ORGANIC SYNTHESIS OF BETULONIC ACID AMIDES WITH PIPERAZINE DERIVATIVES - The present invention provides a method of purifying betulonic acid contained the reaction product of organic synthesis of a Jones oxidation reagent and betulin extracted from the bark of a birch, a method of preparing a piperazine betulonic acid amide derivative, which is used as a chemical having an antibacterial function, using the high-purity betulonic acid obtained by the purification method and a derivative prepared by this method, a method of purifying a Boc-lysinated betulonic acid monomer ester contained in the reaction product of organic synthesis of lysine and the high-purity betulonic acid (starting material) obtained by the purification method, and a method of purifying Boc-lysinated betulonic acid contained in the reaction product of hydrolysis of the high-purity Boc-lysinated betulonic acid monomer ester. | 08-28-2014 |
| Entries |
| Document | Title | Date |
|---|
| 20090043096 | METHOD OF PRODUCING AROMATIC COMPOUND - A method of producing an aromatic compound of the following formula (3) comprising reacting a compound of the following formula (1) with an olefin compound of the following formula (2) in the presence of a transition metal complex: | 02-12-2009 |
| 20090176983 | Tenofovir Disoproxil Hemi-Fumaric Acid Co-Crystal - The present invention provides a novel crystalline form of Tenofovir disoproxil fumarate (Tenofovir DF), designated Co-crystal TDFA 2:1, methods for the preparation thereof and its use in pharmaceutical applications, in particular in anti-HIV medicaments. The crystalline form TDFA 2:1 can be used in combination with other anti-HIV medicaments such as Efavirenz, Emtricitabine, Ritonavir and/or TMC114. | 07-09-2009 |
| 20090221820 | Ligands for Transition-Metal-Catalyzed Cross-Couplings, and Methods of Use Thereof - Ligands for transition metals are disclosed herein, which may be used in various transition-metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The disclosed methods provide improvements in many features of the transition-metal-catalyzed reactions, including the range of suitable substrates, number of catalyst turnovers, reaction conditions, and efficiency. For example, improvements have been realized in transition-metal-catalyzed cross-coupling reactions. | 09-03-2009 |
| 20090234119 | Ionic Liquids - The present invention relates to compositions of matter that are ionic liquids, the compositions comprising any of eleven cations combined with any of three fluorinated sulfonated anions. Compositions of the invention should be useful as solvents and, perhaps, as catalysts for many reactions, including aromatic electrophilic substitution, nitration, acylation, esterification, etherification, oligomerization, transesterification, isomerization and hydration. | 09-17-2009 |
| 20100184977 | Nickel or Iron Catalysed Carbon-Carbon Coupling Reaction of Arylenes, Alkenes and Alkines - Organozinc compounds of the type R | 07-22-2010 |
| 20100261900 | Process for the palladium-catalyzed coupling of terminal alkynes with heteroaryl tosylates and heteroaryl benzenesulfonates - A process for the palladium-catalyzed coupling of terminal alkynes with heteroaryl tosylates and heteroaryl benzenesulfonates | 10-14-2010 |
| 20110263849 | METHOD FOR RAPIDLY METHYLATING HETEROAROMATIC ARENE AND METHOD FOR PRODUCING TRACER FOR USE IN PET - Provided is a method whereby a heteroaromatic ring aryl can be very rapidly methylated at a high yield. In an N-alkyl-2-pyrrolidinone, a heteroaromatic ring aryltrialkylstannan is cross-coupled with methyl iodide in the presence of a palladium complex, a phosphine ligand, a cuprous halide, a carbonic acid salt and/or an alkali metal fluoride to thereby rapidly methylate the heteroaromatic ring aryl. (Formula shows a case wherein the heteroaromatic ring aryl is a pyridyl group.) | 10-27-2011 |
| 20160046609 | SYNTHESIS AND NOVEL SALT FORMS OF (R)-5-((E)-2-PYRROLIDIN-3YLVINYL)PYRIMIDINE - The present invention relates to the stereospecific synthesis of (R)-5-((E)-2-pyrrolidin-3-ylvinyl)pyrimidine, its salt forms, and novel polymorphic forms of these salts. | 02-18-2016 |
