Class 546/349 - Alkylation or dealkylation process

Subclass of Class 546 - Organic compounds -- part of the class 532-570 series
Definition: Processes in which an alkyl group is formed or removed.
No. of patents: 29
Last issue date: 10/07/2008

Number	Title	Issue Date
7432268	17β-hydroxysteroid dehydrogenase type 3 inhibitors for the treatment of androgen dependent diseases There are disclosed compounds of the formula (I): prodrugs thereof, or pharmaceutically acceptable salts of the compounds or of said prodrugs which are useful as inhibitors of Type 3 17β-Hydroxysteroid Dehydrogenase. Also ...	10/07/2008
7148177	Method for producing alkali metal catalyst and use thereof for the side-chain alklation of alkyl aromatics The invention relates to a process for the preparation of an alkali metal catalyst by mixing an alkali metal with pulverulent, solid potassium carbonate as support, wherein the potassium carbonate has a specific surface area of at least 0.3 m2/g, and to t...	12/12/2006
7041856	Coupling catalyst and process using the same There are disclosed a process for producing a coupling compound of formula (1): (Y—)(n−1)R1—R2—(R1)(n′−1), (1) wherein R1 and R2	05/09/2006
7026478	Iron catalyzed cross coupling reactions of aromatic compounds A process for the production of compounds Ar—R1 by means of a cross-coupling reaction of an organometallic reagent R1-M with an aromatic or heteroaromatic substrate Ar—X catalyzed by one or several iron salts or iron complexes as catalysts ...	04/11/2006
6911451	Phenylalanine derivatives Phenylalanine derivatives of formula (1) are described: wherein L1 is a linker atom or group; X1 is a group selected from —N(R3)CO—, —N(R3)SO	06/28/2005
6642273	Unsaturated derivatives at the 4-position of 6-tert-butyl-1,1-dimethylindane and their use in human and veterinary medicine and in cosmetics An unsaturated derivative at the 4-position of 6-tert-butyl-1,1-dimethylindane corresponding to the following formula: ##STR1## in which: X represents: a divalent radical of formula: ##STR2## and Y represents a divalent radical of following formul...	11/04/2003
6635645	2,5,-diazabicyclo[2.2.1]heptane derivatives, their preparation and therapeutic uses The invention relates to 2,5-diazabicyclo[2.2.1]heptane derivatives, to pharmaceutical compositions containing them, and to methods for the treatment or prevention of disorders associated with a dysfunction of the nicotinic receptors utilizing them....	10/21/2003
6630510	Substituted succinic acid metallo-ଲ-lactamase inhibitors and their use in treating bacterial infections This invention relates to novel substituted succinic acid metallo-ଲ-lactamase inhibitors which are useful potentiators of ଲ-lactam antibiotics. Accordingly, the present invention provides a method of treating bacterial infections in animals or...	10/07/2003
6245918	Preparation of a molten salt from trialkyloxonium anion and amine Process for the preparation of an ionic compound, Q+ A- liquid at less than 150° C., wherein a trialkyloxonium of the anion is reacted with an amine in a hydrocarbon solvent. The aforesaid ionic compound can be used as a solvent in ...	06/12/2001
6096894	Production method of 2-(p-alkylphenyl)pyridine compound A method of producing a 2-(p-alkylphenyl)pyridine compound economically, easily and industrially, which comprises adding manganese dioxide and trimethylchlorosilane, or adding manganese chloride to an organic ether solvent, and reacting p-alkylphenylmagne...	08/01/2000
5763668	Process for aminating a mixture obtained in cracking a mineral oil fraction with ammonia or a primary or secondary amine over specific heterogeneous catalysts Amines are prepared by reacting a mixture obtained in the cracking of mineral oil fractions with ammonia or a primary or secondary amine of the general formula I ##STR1## where R1 and R2 are each hydrogen, C1 -C2...	06/09/1998
5705648	Mepiquat chloride Mepiquat chloride is formed from the reaction between N-methylpiperidine and chloromethane in an anhydrous liquid solvent selected from the group consisting of acetone, methyl ethyl ketone, toluene, tetrahydrofuran, isopropanol, acetonitrile, N,N-dimethyl...	01/06/1998
5360911	Process for the preparation of stilbazolium salts A novel process is disclosed for producing stilbazolium salts. Said novel process employs a heterocyclic amine catalyst, such as pyrrolidine, an alkylated pyridine salt and a substituted benzaldehyde which unexpectedly results in increased reaction rates ...	11/01/1994
5290932	Preparation of amines by reductive amination using zeolite catalyst Amines of the general formula I ##STR1## where R1 and R2 are each C1 -C20 -alkyl, C3 -C20 -cycloalkyl, C4 -C20 -alkylcycloalkyl, C4 -C20 -cy...	03/01/1994
5080719	Smoking compositions containing a heteroaromatic flavorant-release additive This invention privdes novel heteroaromatic compounds, and smoking compositions which contain an invention heteroaromatic compound as a flavorant-release additive as illustrated by the following additive structure: ##STR1## Under typical cigaret...	01/14/1992
5061805	Process for preparing 2-methyl-3,5-dialkylpyridines by dealkylation with sulfur A process for dealkylating the 2-position on a trisubstituted pyridine derivative having the formula ##STR1## where R1 is a straight chain alkyl group from about C2 -C5 and where R2 and R3 are al...	10/29/1991
4701530	Two-stage process for making trimethyl pyridine Process for the production of 2,4,6-trimethyl pyridine wherein a carbonyl compound such as acetone is reacted with ammonia in the presence of a condensation catalyst at a temperature in the range from 100° to 200° C. to produce a mixture of products con...	10/20/1987
4658032	Process for producing 2,3,5-collidine and/or 2,3,5,6-tetramethylpyridine Process for producing 2,3,5-collidine and/or 2,3,5,6-tetramethylpyridine which is characterized by reacting 3,5-lutidine as the starting material with an aliphatic alcohol having 1 to 4 carbon atoms, in the presence of a catalyst for hydrogenation at a te...	04/14/1987
4656299	Substituted cyclopentadienyl cobalt complexes and synthesis of pyridine homologues by means of the complexes A complex of an electron-attracting group-substituted η5 -cyclopentadienylcobalt with a polyene or an acetylene for use as a catalyst, for example, for the synthesis of a substituted pyridine from an alkyne and a nitrile....	04/07/1987
4294968	Method for preparing ଱-picoline from 5-oxohexanenitrile The catalytic method of preparing ଱-picoline from 5-oxohexanenitrile is improved by using as the catalyst carbon-supported palladium....	10/13/1981
4220785	Substituted pyridines This invention relates to substituted pyridines prepared by reacting aldehydes, amines, lower carboxylic acids such as acetic acid in the presence of oxygen. The N-substituted pyridinium salts formed can be converted to pyridines by thermal dealkylation. ...	09/02/1980
4189585	Process for the preparation of pyridine and 2,6-lutidine A process for preparing pyridine with 2,6 lutidine as by-product, by catalytic demethylation of ଱-picoline in the gaseous phase with steam is disclosed wherein the demethylation step is conducted at a temperature of 250°-360° C. using a metallic h...	02/19/1980
4186148	Process for producing 3,7-dimethyl-2,6-octadienylamine derivatives 3,7-Dimethyl-2,6-octadienylamine derivatives are produced by reacting isoprene with a secondary amine in the presence of a catalyst prepared by reacting a secondary amine, a conjugated diene and/or a polycyclic aromatic compound, a lithium salt and sodium...	01/29/1980
4179580	Organic chemical reaction A process for increasing the reaction rate of condensation reactions which occur between non-conjugated non-aromatic olefinically unsaturated hydrocarbons and active hydrogen-containing organic compounds in the presence of alkali metal comprising carrying...	12/18/1979
4138488	Diphenylmethyl picolinic acid derivatives and their use as anti-acne agents Disclosed herein are substituted diphenylmethyl picolinic acids, pharmaceutically acceptable salts, amides and esters thereof. The compounds disclosed are useful as topical anti-acne agents....	02/06/1979
4118388	Process for producing pyridine A process for producing pyridine which comprises oxidatively dealkylating an alkylpyridine, an alkenylpyridine or a mixture thereof in the gaseous phase with molecular oxygen and steam in the presence of a catalyst comprising active components with a gene...	10/03/1978
4041039	Process for preparing 2-ethyl-pyridine Process for the manufacture of 2-ethyl-pyridine from 2-methyl-pyridine and methanol in the gaseous phase with a catalyst consisting essentially of silicon dioxide and oxides of metals of the second and/or third main group or subgroup and/or the fifth main...	08/09/1977
4022785	Substituted pyridines and dihydropyridines This invention relates to a process of preparing alkylpyridines and N-substituted alkyldihydropyridines from hexahydrotriazines. These products may be further reacted to form other compositions. The products of the reaction are useful as corrosion inhibit...	05/10/1977
3948803	Catalyst Catalyst compositions comprising a compound of the formula MX(CuCN)n, wherein M is lithium or magnesium, X is chloro, bromo, or iodo and n is one, two or three, in solution in a solvent selected from e.g. tetrahydrofuran, tetrahydropyran and di...	04/06/1976

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Class 546/349 - Alkylation or dealkylation process