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Class 546/250 - Process of forming pyridine ring


Subclass of Class 546 - Organic compounds -- part of the class 532-570 series
Definition: Processes of forming the pyridine ring, i.e., six-membered
No. of patents: 189
Last issue date: 05/04/2010


1          
NumberTitleIssue Date
7709648Process for the preparation of 2-substituted-5-(1-alkylthio)alkylpyridines
2-Substituted-5-(1-alkylthio)alkylpyridines are produced efficiently and in high yield. ...
05/04/2010
7705154Process for the preparation of 2-substituted-5-(1-alkylthio)alkylpyridines
2-Substituted-5-(1-alkylthio)alkylpyridines are produced efficiently and in high yield by cyclization and thioalkylation. ...
04/27/2010
7557216Process 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...
07/07/2009
7541469Process for the preparation of 2-substituted-5-(1-alkylthio)alkylpyridines
2-Substituted-5-(1-alkylthio)alkylpyridines are produced efficiently and in high yield from a non-pyridine source by cyclization. ...
06/02/2009
7491828Liquid phase process for the synthesis of annulated pyridines over molecular sieve catalysts
The present invention relates to a process for producing annulated pyridines by reacting cyclic ketone, aldehyde and ammonia in presence of molecular sieve type catalysts in an environmentally friendly, economical and highly selective heterogeneous method. ...
02/17/2009
7439366Phenacylamine derivatives, process for their production and pesticides containing them
The present invention relates to a phenacylamine derivative of the formula (I) or a salt thereof: wherein A is alkyl, cycloalkyl, phenyl which may be substituted by Y, pyridyl which may be substituted by Y, or pyrazolyl whi...
10/21/2008
7417041Imidazopyrimidines as transforming growth factor (TGF) inhibitors
Novel fused heteroaromatic compounds, including derivatives thereof, to intermediates for their preparation, to pharmaceutical compositions containing them and to their medicinal use are described. The compounds of the present invention are potent inhibitors of tran...
08/26/2008
7321043Processes for the preparation of 2-aminomethylpyridines and the 2-cyanopyridines used in their preparation
Disclosed herein is a process for the preparation of a compound of the formula (II): or a salt thereof, wherein X is halogen; each Y, which may be the same or different, is halogen, haloalkyl, alkoxycarbonyl or a...
01/22/2008
7288493Body armor with improved knife-stab resistance formed from flexible composites
Flexible body armor formed from flexible composites which have improved knife-stab resistance. The body armor is formed from composites which include layers of a fabric base, formed from high tenacity fibers, and a rubber layer bonded to the fabric base. A thermopla...
10/30/2007
7256304Process for producing 3-unsubstituted 5-amino-4-nitrosopyrazole compound, and 2-hydroxyimino-3-oxopropionitrile, 3-hydrazono-2-hydroxyiminopropionitrile compound, and processes for producing these
The present invention is to provide a process for preparing a 3-unsubstituted-5-amino-4-nitrosopyrazole compound represented by the formula (1): wherein R1 represents a hydroge...
08/14/2007
72382116-alkoxy-2,3-diaminopyridine couplers in which the amino radical in position 2 is a disubstituted amino radical, and use of these couplers for dyeing keratin fibres
The invention relates to a dye composition that is useful for dyeing keratin fibers, containing at least one oxidation base and at least one coupler of the 6-alkoxy-2,3-diaminopyridine type in which the amino radical in position 2 is a disubstituted amino radical, t...
07/03/2007
7232909Pyridine derivatives
This invention is to provide a process for producing 2-amino-4,6-disubstituted nicotinic acid ester analogs and salts thereof, comprising the reaction shown by the following scheme. The ester analogs can be prepared in one pot, and in good yield by using tertiary al...
06/19/2007
7227040Process for forming branched composition catalytically by carbon-hydrogen bond activation in a saturated moiety
A branched composition can be formed by reacting a reagent containing a saturated hydrocarbon moiety in the presence of (a) a catalyst capable of activating a carbon-hydrogen bond therein and (b) a branching reagent having a moiety that binds to the carbon atom in t...
06/05/2007
7179307Use of an extract of in oxidation dyeing for dyeing keratin fibres
Use of an extract of the plant Myrsine africana in oxidation dyeing for dyeing keratin fibers, a novel composition comprising this plant extract, a process for the oxidation dyeing of keratin fibers using this composition, as well as the colored products obta...
02/20/2007
7175670Couplers of 2,3,5-triaminopyridine and use of the same for dyeing keratin fibers
The present invention relates to a dye composition comprising at least one oxidation base and at least one coupler of the 2,3,5-triaminopyridine type. This composition may be useful for dyeing keratin fibers, such as the hair. Also disclosed are a process for dyeing...
02/13/2007
7148356Process for the catalytic synthesis of biaryls and polymers from aryl compounds
A process for producing organic substituted aromatic or heteroaromatic compounds including biaryl and biheteroaryl compounds in a two-step reaction. In the first step, the aromatic or heteroaromatic compound is borylated in a reaction comprising a borane or diborane...
12/12/2006
7071212N-(4-carbamimidoyl-phenyl)-glycine derivatives
The invention is concerned with novel N-(4-carbamimidoyl-phenyl)-glycine derivatives of the formula: wherein R1, E, X1 to X4 and G1 and G2 are as defined in ...
07/04/2006
7057079Method of synthesizing alkenone compounds
A method of producing a halogen alkenone ether by attaching carboxylic acid halogenides or carboxylic acid anhydrides to a vinyl ether. According to the invention the method is carried out in the presence of an onium salt of a carbonic acid which can be regenerated....
06/06/2006
70449876-alkoxy-2,3-diaminopyridine couplers in which the amino radical in position 2 is a monosubstituted amino radical, and use of these couplers for dyeing keratin fibres
The invention relates to a dye composition that is useful for dyeing keratin fibres, containing at least one oxidation base and at least one coupler of the 6-alkoxy-2,3-diaminopyridine type in which the amino radical in position 2 is a monosubstituted amino radical,...
05/16/2006
7008561Ether carboxylic acids based on alkoxylated mercaptobenzothiazoles and use of the same as corrosion inhibitors
The present invention relates to compounds of formula (1) and the salts thereof which correspond to formula (2). In the formulae, A is C2- to C4-alkylene, x is a number from 1 to 100, y is a number...
03/07/2006
7001887Peptide derivatives
A compound of Formula (1):   wherein R1 represents an amidinophenyl group, etc.; R2 represents a hydrogen atom, etc.; R3 repr...
02/21/2006
6974485Use of an extract of Myrsine africana in oxidation dyeing for dyeing keratin fibres
Use of an extract of the plant Myrsine africana in oxidation dyeing for dyeing keratin fibres, a novel composition comprising this plant extract, a process for the oxidation dyeing of keratin fibres using this composition, as well as the coloured products obt...
12/13/2005
6969768Preparation of 4-haloalkylnicotinic esters
A process for preparing 4-haloalkylnicotinic esters of the formula (I), where RF is (C1-C4)-haloalkyl and R is (C1-C6)-alkyl; w...
11/29/2005
6967253Method for synthesis of 5-(3-pyridylmethylene-)imidazolidine-2,4-dione
Process for the synthesis of 5-(3-pyridylmethyl)imidazolidine-2,4-dione, according to which 5-(3-pyridylmethylene)imidazolidine-2,4-dione is subjected to a hydrogenation reaction. ...
11/22/2005
6921762Substituted indolizine-like compounds and methods of use
Selected novel substituted indolizine-like compounds are effective for treatment of diseases, such as TNF-α, IL-1β, IL-6 and/or IL-8 mediated diseases, and other maladies, such as cancer, pain and diabetes. The invention encompasses novel compounds, analogs, prodr...
07/26/2005
6921828Processes for the preparation of 2-aminomethlpyridines and the 2-cyanopyridines used in their preparation
The invention relates to a process for the preparation of a compound of formula (V), according to the following scheme: wherein the various substituants are as defined in the description ...
07/26/2005
6867302Process for the catalytic synthesis of biaryls and polymers from aryl compounds
A process for producing organic substituted aromatic or heteroaromatic compounds including biaryl and biheteroaryl compounds in a two-step reaction. In the first step, the aromatic or heteroaromatic compound is borylated in a reaction comprising a borane or diborane...
03/15/2005
68379082,5-diaminopyridine oxidation bases for the dyeing of keratin fibres
Dyeing compositions for the dyeing of keratin fibers comprising at least one oxidation base chosen from formula (I), as defined herein and addition salts thereof. The use of the compositions for the dyeing of keratin fibers. Dyeing processes employing the compositio...
01/04/2005
6806372Coupler for use in oxidative hair dyeing
Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): wherein X is selected from halogen and R2SO4; R3 is selected from C1 to...
10/19/2004
67841376-aryl-4-aminopicolinates and their use as herbicides
4-Aminopicolinic acids having aryl or heteroaryl substituents in the 6-position and their amine and acid derivatives are potent herbicides demonstrating a broad spectrum of weed control. ...
08/31/2004
6777556Process for preparing 2-haloalkylnicotinic acids
The present invention relates to a process for preparing 2-haloalkylnicotinic acids and haloalkylnicotinic acid derivatives starting from halomethyl-substituted enones and 3-dialkylaminoacrylic esters and also to intermediates of the process according to the inventi...
08/17/2004
6696552Process for preparing substituted pyridone compounds
A process which comprises admixing in the absence of a solvent an amine of the formula R1 --NH2 and a first ester of the formula ##STR1## wherein R2 is an electron withdrawing group and R3 is an alkyl group; hea...
02/24/2004
6667326Pesticidal aminoheterocyclamide compounds
The invention relates to compounds of the general formula ##STR1## wherein R1, R2, R3, R4, R5, X1, X2, X3, m and n have the significances given in claim 1, and optionally ...
12/23/2003
6624307Process for producing 2,6-dihydroxy-3,4-dialkylpyridines
Commercially viable process for producing 2,6-dihydroxy-3,4-dimethlpridine. The process includes reacting 2-cyanoacetamide with sodium methoxide followed by condensation with ethyl 2-methylacetoacetate in methanol to give the sodium salt of 2,6-dihydroxy-...
09/23/2003
6603006Intermediate for the synthesis of amlodipine, a process for the preparation thereof and corresponding use
An intermediate for the synthesis of amlodipine, a process for the preparation thereof and the corresponding use are disclosed. The intermediate is ethyl 3-amino-4-(2-(phthalimido)ethoxy)crotonate and is of formula III: ##STR1## The process for the p...
08/05/2003
6566527Process for preparing 1-(6-methylpyridin-3-yl)-2-[4-methylsulphonyl)-phenyl]ethanone
A five-step process for preparing 1-(6-methylpyridin-3-yl)-2-[4-methylsulfonyl)phenyl]ethanone of formula (I): ##STR1## The process involves the following steps: (a) 4-(methylthio)benzyl alcohol is converted into 4-(methylthio)benzyl chloride; (b) 4-...
05/20/2003
6541640Process for the preparation of 4-haloalkylnicotinonitriles
4-Haloalkylnicotinonitriles having the formula (I) ##STR1## which are suitable as intermediates in the preparation of pesticides, are obtained by: (a) reacting a 3-amino-1-haloalkyl-2-propen-1-one RF --C(O)--CH.dbd.CH--NH2 (II) in a con...
04/01/2003
6541639Efficient ligand-mediated Ullmann coupling of anilines and azoles
The present invention provides of method of preparing phenyl-substituted azoles. This method uses an efficient ligand-accelerated Ullmann coupling reaction of anilines with azoles. The coupling products are useful for preparing factor Xa inhibitors....
04/01/2003
6504032Process for the production of 2-pyridylpyridine derivatives
A process for producing a 2-pyridylpyridine derivative usable as an intermediate for medicines or agricultural chemicals is provided, which does not require expensive metal catalysts, which does not cause environmental problems, and which can be conducted...
01/07/2003
6486327Method for producing hydroxymethylpyridines
The invention relates to a method for producing hydroxymethylpyridines from the corresponding vinylpyridines by means of ozonisation in an alcohol as solvent and by means of hydrogenation of the peroxide-containing solution produced thereby, in the presen...
11/26/2002
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