Class / Patent application number | Description | Number of patent applications / Date published |
546250000 | Process of forming pyridine ring | 18 |
20080214825 | Method For Producing Substituted Halopyridines - Methods for producing substituted halopyridines (II) by reacting a β-hydroxy-y-acyl butyronitrile (I) or a suitable acyl-protected derivative with hydrogen halides, or substances or mixtures that can release hydrogen halides. In the formulae (I) and (II): R, R | 09-04-2008 |
20090043101 | PROCESS FOR PRODUCTION OF 5-CHLORO-2,4-DIHYDROXYPYRIDINE - To provide an industrially advantageous process for producing 5-chloro-2,4-dihydroxypyridine, which is an inhibitor acting on a biodegradation enzyme that biodegrades an anti-malignant-tumor agent 5-fluorouracil. The process is carried out under mild conditions with a small number of steps and produces less industrial waste. | 02-12-2009 |
20090099368 | DEHYDROGENATION PROCESS - Processes comprising: providing a dehydrogenatable compound; and subjecting the dehydrogenatable compound to a dehydrogenation reaction at a temperature of from 150 to 400° C., in the presence of oxygen, and at a temperature profile of the dehydrogenation reaction which does not differ substantially from the temperature profile of the dehydrogenation reaction in the absence of oxygen under otherwise identical conditions. | 04-16-2009 |
20100004457 | PROCESS FOR THE PREPARATION OF 2-TRIFLUOROMETHYL-5-(1-SUBSTITUTED)ALKYLPYRIDINES - 2-Trifluoromethyl-5-(1-substituted)alkylpyridines are produced efficiently and in high yield from an alkyl vinyl ether and trifluoroacetyl chloride by cyclization. | 01-07-2010 |
20100016603 | PRODUCTION PROCESS OF 2,3'-BIPYRIDYL-6'-ONE - A production process where 2,3′-bipyridyl-6′-one can be produced in high purity at low cost on an industrial scale without using an expensive catalyst or special equipment is provided. A process for producing 2,3′-bipyridyl-6′-one comprises reacting an acetylpyridine derivative with at least one of compounds represented by formulae (II) to (V) to synthesize a bipyridine derivative and hydrolyzing the bipyridine derivative by one-pot preparation. In formulae (II) to (V), each of R2 to R8, X and Y represents a given group. | 01-21-2010 |
20100029948 | PROCESS FOR THE SYNTHESIS OF DIAMINOPYRIDINES FROM GLUTARONITRILES - A liquid-phase process is provided for the manufacture from glutaronitriles and related compounds of 2,6-diaminopyridine and related compounds, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a dehydrogenative aromatization process. | 02-04-2010 |
20100292482 | NOVEL PRECURSORS - The present invention relates to a Compound of the formula (I), wherein X represents CN, COOR, wherein R represents hydrogen or a carboxyl protecting group, CONR′2, wherein R′ represents hydrogen or a carboxyl protecting group, or nitro; R1, R2, R3, R4, R5 independently of each other represent hydrogen, C1-C6 alkyl, halogen, trifluoromethyl, cyano, nitro, substituted aryl or substituted heteroaryl group; Y represents hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C7-C13 alkaryl, trifluoromethyl, cyano, nitro, substituted aryl or substituted heteroaryl group; and wherein the stereochemically unspecified double bonds in the above formula (I) represent either the E,E; E,Z; Z,E or Z,Z configuration. | 11-18-2010 |
20110077406 | CROSS-COUPLING OF PHENOLIC DERIVATIVES - Embodiments of the invention provide methods and materials for chemical cross-coupling reactions that utilize unconventional phenol derivatives as cross-coupling partners. Embodiments of the invention can be used to synthesize a variety of useful organic compounds, for example the anti-inflammatory drug flurbiprofen. | 03-31-2011 |
20120190855 | Method and Substances for the Preparation of N-Substituted Pyridinium Compounds - Methods for the synthesis of N-substituted carboxylated pyridinium compounds by reaction of a pentamethine precursor with a primary amine are provided. In this reaction an N-substituted alkoxycarbonyl pyridinium heterocycle is formed. | 07-26-2012 |
20140005403 | FUNCTIONALIZED PYRIDINE N-OXIDES AND PROCESSES FOR THE PREPARATION OF THE SAME | 01-02-2014 |
20140171650 | PROCESS FOR THE PREPARATION OF 4-AMINO-5-FLUORO-3-CHLORO-6-(SUBSTITUTED)PICOLINATES - 4-Amino-5-fluoro-3-chloro-6-(substituted)picolinates are prepared from trifluoroacetic acid, p-methoxyaniline, a C | 06-19-2014 |
20140296533 | PROCESS FOR THE PREPARATION OF 4-AMINO-5-FLUORO-3-CHLORO-6-(SUBSTITUTED)PICOLINATES - 4-Amino-5-fluoro-3-chloro-6-(substituted)picolinates are prepared from trifluoroacetic acid, p-methoxyaniline, a 3,3-dialkoxyprop-1-yne and a substituted methylene amine by a series of steps. | 10-02-2014 |
20150133669 | NEW PROCESS FOR THE PREPARATION OF 2-CYCLOPENTYL-6-METHOXY-ISONICOTINIC ACID - The present invention relates to new processes for the preparation of 2-cyclopentyl-6-methoxy-isonicotinic acid, which is a useful intermediate for the synthesis of pyridine-4-yl derivatives as immunomodulating agent. Moreover, the present invention also relates to new intermediates used in those processes. | 05-14-2015 |
546251000 | The pyridine ring is unsubstituted or hydrocarbyl substituted only | 5 |
20110003997 | Process for the synthesis of 3-methyl-pyridine - The present invention discloses a process for the synthesis of 3-methyl-pyridine from formaldehyde, paracetaldehyde, ammonia and acetic acid, whereby said compounds are reacted and said process comprises the following parameters:
| 01-06-2011 |
20110028727 | PROCESS FOR THE SELECTIVE PREPARATION OF 3-METHYLPYRIDINE (3-PICOLINE) FROM ACROLEIN AND ONE OR MORE AMMONIUM SALTS DISSOLVED IN WATER - The present invention relates to a process for the selective preparation of 3-methylpyridine, characterized in that acrolein and one or more ammonium salt(s) dissolved in water are reacted continuously under high pressures and at temperatures of 200-400° C. | 02-03-2011 |
20110237799 | Process for Producing Phosphonium Borate Compound, Novel Phosphonium Borate Compound, and Method of Using the Same - The invention relates to methods for carbon-carbon bond forming reactions, carbon-nitrogen bond forming reactions and/or carbon-oxygen bond forming reactions using phosphonium borate compounds represented by the Formula: (R | 09-29-2011 |
546252000 | Starting materials include a nitrogen containing hetero ring (e.g., starting materials include a piperidine ring, etc.) | 1 |
20110251397 | METHOD FOR PREPARATION OF 3-METHYLPYRIDINE - The present invention relates to a method for the preparation of 3-methylpyridin by reacting 2-methyl-2,5-di-aminopentane and/or 3-methylpiperidin at about atmospheric pressure and a temperature of 180° C. to 400° C. in a hydrogen atmosphere free of oxygen gas in the presence of a suitable catalyst and of water and/or a volatile alcohol. | 10-13-2011 |
546254000 | Starting materials include an acyclic hydrocarbyl ether or an acyclic hydrocarbyl alcohol | 1 |
20120283446 | METHOD FOR SYNTHESIZING BIO-BASED PYRIDINE AND PICOLINES - The present invention relates to a method for synthesizing bio-based pyridine and picolines, said method including at least the following steps: a first step involving subjecting a glycerol filler, created from the methanolysis of vegetable oils or animal fats, to a dehydration reaction leading to acrolein; a second step involving partial condensation of the effluent from the first step so as to separate a water-rich flow as well as an acrolein-rich flow; and a third step involving reacting the acrolein from the preceding step with acetaldehyde in the presence of ammonia so as to obtain, by means of a condensation reaction, the biobased pyridine and picolines. | 11-08-2012 |