| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 544358000 |
Piperazines (i.e., fully hydrogenated 1,4-diazines)
| 235 |
| 544338000 |
Polycyclo ring system having the diazine ring as one of the cyclos
| 122 |
| 544406000 |
Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazine ring
| 23 |
| 544405000 |
Additional hetero ring which is unsaturated
| 18 |
| 544337000 |
Phosphorus attached directly or indirectly to the diazine ring by nonionic bonding
| 14 |
| 544357000 |
Plural diazine rings
| 13 |
| 544408000 |
Chalcogen bonded directly to diazine ring carbon
| 9 |
| 544409000 |
Halogen attached directly to the diazine ring by nonionic bonding | 2 |
| 20110275817 | METHOD FOR PRODUCING DICHLOROPYRAZINE DERIVATIVE - A method for producing a hydroxypyrazine derivative represented by formula (I) (wherein R | 11-10-2011 |
| 20150051397 | PYRAZINO[2,3-b]PYRAZINE mTOR KINASE INHIBITORS FOR ONCOLOGY INDICATIONS AND DISEASES ASSOCIATED WITH THE mTOR/PI3K/AKT PATHWAY - Provided herein are Heteroaryl Compounds having the following structure: | 02-19-2015 |
| 544410000 |
Unsubstituted or hydrocarbyl substituted only, or salt thereof | 2 |
| 20150087837 | RHENIUM RECOVERY FROM USED REDUCTIVE AMINATION CATALYSTS - The present invention provides techniques that selectively recover Re from reductive amination catalysts. In particular, the present invention allows Re to be recovered selectively relative to Ni, Co, and/or Cu, and particularly Ni, that are often present on reductive amination catalysts. The present invention uses a combination of oxidation and extraction techniques to selectively recover Re relative to Ni, Co, and/or Cu. Advantageously, the recovery is selective even when using aqueous solutions for extraction. | 03-26-2015 |
| 20160145217 | METHOD FOR PREPARING NITROGEN-CONTAINING AROMATIC COMPOUND BY CATALYTIC PYROLYSIS OF ORGANIC MATERIAL - Provided is a method for preparing a nitrogen-containing aromatic compound through catalytic pyrolysis from organic materials. The method comprises: feeding organic materials and a catalyst into a reactor, to enable the organic material to undergo reactions in the presence of nitrogen and under heating conditions, so as to generate a reaction system flow containing one or more nitrogen-containing aromatic compounds. | 05-26-2016 |
| Entries |
| Document | Title | Date |
|---|
| 20080214814 | Stable ionic liquid complexes and methods for determining stability thereof - Stable ionic liquid complexes capable of maintaining stability at high temperatures, under acidic and highly oxidative conditions in the presence of a transition metal, and methods for determining the stability of stable ionic liquid complexes are provided. In accordance with the disclosure herein, the stable ionic liquid complexes are derived from pyrazole, pyrazine and 1,2,4-triazole. | 09-04-2008 |
| 20090234120 | 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 |
| 20090292122 | PROCESS FOR THE PREPARATION OF CYANO-SUBSTITUTED-NITROGEN-CONTAINING HETEROARYL COMPOUNDS - The present invention provides compounds and methods that can be used to convert nitrogen-containing-heteroaryl carboxamides to the corresponding nitrogen-containing-heteroaryl nitriles reliably in one step, with high yields and without the need for elaborate purification. | 11-26-2009 |
| 20100184982 | DETERGENT-DISPERSANT, ADDITIVE COMPOSITION FOR LUBRICANT, AND LUBRICANT COMPOSITION - Provided is a detergent-dispersant for a lubricant having excellent detergency and dispersibility effects. Specifically provided are: a detergent-dispersant including a heterocyclic compound having a heterocyclic skeleton derived from a compound selected from the group consisting of pyridines, pyrroles, pyrimidines, pyrazoles, pyridazines, imidazoles, pyrazines, triazines, triazoles, tetrazoles, oxazoles, oxadiazoles, thiazoles, thiadiazoles, furans, dioxanes, pyrans, and thiophenes; and an additive composition for a lubricant and a lubricant composition, each containing the detergent-dispersant. | 07-22-2010 |
| 20100228029 | Ligustrazine aromatic acid ether derivative, its preparation method, pharmaceutical composition, and application - Ligustrazine aromatic acid ether derivative of general formula I, its preparation method, pharmaceutical composition and application, wherein Ar is selected from aryl substituted aryl and substituted styryl, R is selected from hydrogen and alkyl with no more than 6 carbon atoms. | 09-09-2010 |
| 20100267955 | SYNTHESIS OF PYRAZINES INCLUDING 2,6-DIAMINOPYRAZINE-1-OXIDE (DAPO) AND 2,6-DIAMINO-3,5-DINITROPYRAZINE-1-OXIDE (LLM-105) - A method for synthesizing a pyrazine-containing material according to one embodiment includes contacting an iminodiacetonitrile derivative with a base and a reagent selected from a group consisting of hydroxylamine, a hydroxylamine salt, an aliphatic primary amine, a secondary amine, an aryl-substituted alkylamine a heteroaryl-substituted alkyl amine, an alcohol, an alkanolamine and an aryl alcoholamine. Additional methods and several reaction products are presented. | 10-21-2010 |
| 20110028721 | Chromophore and Polymer Capable of Detecting the Presence of Various Neurotoxins and Method of Use - Applicants have produced a chromophore and a polymer that are highly sensitive to the presence of various agents, including organophosphates, pesticides, neurotoxins, metal ions, some explosives, and biological toxins. The detection is accomplished by detecting a change in the fluorescence characteristics of the chromophore or polymer when in the presence of the agent to be detected. The chromophore and polymer may be incorporated into sensors of various types, and they are adaptable for potential field use in areas where detection of these types of agents is desired. | 02-03-2011 |
| 20110040091 | PROCESS FOR THE PREPARATION OF (R)-2-PHENYL PROPIONIC ACID DERIVATIVES - The present invention relates to a process for the preparation of (R)-2-phenyl propionic acid derivatives of the formula | 02-17-2011 |
| 20120101276 | CRYSTALS - A main object of the present invention is to provide a novel crystal of 2-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy}-N-(methylsulfonyl)acetamide (hereinafter referred to as “compound A”). A Form-I crystal of compound A shows diffraction peaks at 9.4 degrees, 9.8 degrees, 17.2 degrees and 19.4 degrees in the powder X-ray diffraction spectrum thereof. A Form-II crystal of compound A shows diffraction peaks at 9.0 degrees, 12.9 degrees, 20.7 degrees and 22.6 degrees in the powder X-ray diffraction spectrum thereof. A Form-III crystal of compound A shows diffraction peaks at 9.3 degrees, 9.7 degrees, 16.8 degrees, 20.6 degrees and 23.5 degrees in the powder X-ray diffraction spectrum thereof. | 04-26-2012 |
| 20140024831 | 4'-DEMETHYLEPIPODOPHYLLOTOXIN DERIVATIVE, PREPARATION METHOD AND USE THEREOF - A 4′-demethylepipodophyllotoxin derivative of formula(III) having anti-tumor activity is provided. After the activation of hydroxyl in position C4 of 4′-demethylepipodophyllotoxin, tetramethylpyrazine is introduced by transamination to obtain the 4′-demethylepipodophyllotoxin derivative which is preferably used to inhibit gastric cancer line BGC-823. | 01-23-2014 |
| 20140073789 | Biological Buffers with Wide Buffering Ranges - Amines and amine derivatives that improve the buffering range, and/or reduce the chelation and other negative interactions of the buffer and the system to be buffered. The reaction of amines or polyamines with various molecules to form polyamines with differing pKa's will extend the buffering range, derivatives that result in polyamines that have the same pKa yields a greater buffering capacity. Derivatives that result in zwitterionic buffers improve yield by allowing a greater range of stability. | 03-13-2014 |
| 20140100368 | SULFONYL AMIDE DERIVATIVES FOR THE TREATMENT OF ABNORMAL CELL GROWTH - The present invention relates to a compound of the formula I | 04-10-2014 |
| 20150112065 | Pyrazine Derivative, and Light Emitting Element, Display Device, Electronic Device Using the Pyrazine Derivative - It is an object to provide a novel material having a bipolar property, a light emitting element provided with the novel material, and a display device that includes the light emitting element. It is an object to provide a pyrazine derivative represented by the following general formula (g-1). | 04-23-2015 |
| 20150119575 | PROCESS FOR PRODUCING V-COELENTERAZINE COMPOUNDS - A simple process for producing ν-coelenterazine compounds has been desired. The invention provides a process for producing a ν-coelenterazine compound represented by general formula (II) which comprises (1) the step of reacting a compound represented by general formula (VIII) with a methyltriphenylphosphonium salt in the presence of a base to give a compound represented by general formula (IX), (2) the step of performing a ring-closing metathesis reaction on any one selected from the group consisting of the compound represented by general formula (IX) and a compound represented by general formula (X) which is the compound represented by general formula (IX) wherein the amino is protected with R | 04-30-2015 |
| 20160052893 | PYRIDINE- OR PYRAZINE-CONTAINING COMPOUNDS - Described herein are selective bis-alkynyl pyrazines, bis-alkynyl pyridines, bispyridine substituted ellagic acid derivatives, and pyridine-substituted coumarin derivatives and methods of making thereof. | 02-25-2016 |
