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JP2701114B2 |
PURPOSE: To obtain the subject compound by reducing nitro group of 5'-chloro-3'- nitro-2'-hydroxyacetophenone, returning the pH of the reaction mixture to neutral level or thereabout after the completion of the reduction reaction and con...
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JPH1017520A |
To provide a method for formylating an aromatic compound by which a formylation of an aromatic compound is performed to provide an aromatic aldehydes useful as an intermediate for a dye, a medicine or an agrochemical in high yield and hi...
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JP2696933B2 |
The present invention relates to substituted cyclopentanone and cyclohexanone derivatives and substituted cyclopentenone and cyclohexenone derivatives, which are useful as intermediates for pharmaceutical products and agricultural chemic...
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JP2672865B2 |
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JP2664761B2 |
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JPH09263549A |
To obtain the subject compound at a low cost and in a high yield, useful as a raw material for a quinazoline derivative by brominating a m- substituted benzene derivative such as 2-nitrotoluene in the presence of a specific compound. Thi...
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JPH09143131A |
To realize an industrially short-cut process for producing 3-amino-2- oxo-1-hydroxypropane derivative in high yield, from a compound obtained by an α-amino acid via a novel intermediate to this derivative which is important as an interm...
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JPH09143132A |
To realize a production process for an adduct of an amine to an α,β-unsaturated compound, useful in medical and cosmetic preparations, detergent and cleaning compositions and the like, promptly in high yield by carrying out the additio...
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JPH09136866A |
To provide the subject compound useful as a material for a practical organic linear optical element having excellent nonlinear optical effect, chemical and thermal stability and transparency and enabling easy growth and processing of the...
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JP2592421B2 |
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JP2588977B2 |
The invention relates to compounds of formula: in which: - R1 represents a hydrogen atom or a halogen atom; - R2 represents a cyclohexyl or a phenyl; - R3 represents a cycloalkyl containing from 3 to 6 carbon atoms; - R4 represents a hyd...
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JP2581740B2 |
1. Optically active alpha-amino aldehydes of the formulae see diagramm : EP0288764,P16,F7 see diagramm : EP0288764,P16,F8 in which R1 represents an optionally substituted alkyl, alkenyl, aralkyl or aryl radical, and R2 and R3 , independe...
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JPH0931036A |
To easily and economically obtain a diaminofluorenone useful for a charge generating pigment by catalytic reduction of a dinitrofluorenone using a specific catalyst. (A) 2,7-diaminofluorenone is produced by a catalytic reduction of (B) 2...
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JPH0925260A |
To inexpensively, industrially and advantageously obtain an α- aminoα,β-unsaturated-γ-dicarbonyl compound useful as a medicine intermediate, etc., by ready after-treatment after reaction from readily available raw materials. A compou...
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JP2571475B2 |
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JPH08325214A |
PURPOSE: To obtain an aminonaphthoquinone by reacting a naphthoquinone with a free O-alkylhydroxylamine, useful as a raw material for a fungicide, with an extremely improved yield, in simple operation of post-treatment after the reaction...
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JPH08301821A |
To obtain the subject compound useful as a dyestuff for a synthetic fiber in optimal reaction time and yield by reacting in the presence of a hydroxycarboxylic acid. This N,N'-disubstituted 1,4-diaminoanthraquinone is obtained by reactin...
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JPH08291118A |
PURPOSE: To industrially obtain 1-amino-2-alkoxy-4-hydroxyanthraquinone at low cost in high yield with byproduct formation suppressed, by reaction of raw material compounds in the presence of an alkaline agent and a phenolic compound whi...
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JP2549157B2 |
This process comprises reacting 2 mol of an aminoarylamine with 1 mol of a benzoquinone or hydroquinone in the presence of oxidising agents at 10 to 120 DEG C.
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JPH08283595A |
To improve the chlorine resistance, light fastness, washing resistance, and fixation yield by using a specific anthraquinone compd. An anthraquinone compd. of the formula [wherein R1 represents H, a (substd.) 1-6C alkylcarbonyl, a (subst...
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JP2546302B2 |
PURPOSE:To readily obtain the title high-purity compound having high sensitivity, hardly any darkdecay, etc., by dissolving a hydroxycyclobutenedione derivative in a polar solvent and carrying out reaction while dripping the resultant so...
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JPH08268977A |
To easily produce an aromatic amine in high yield by reacting an aromatic nitro compound with CO in water and a water-insoluble organic solvent in the presence of a catalyst containing Pd and a water-soluble phosphine under pressure and ...
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JP2529825B2 |
This invention relates to analogs of peptidase substrates in which the amide group containing the scissile amide bond of the substrate peptide has been replaced by an activated electrophilic ketone moiety. These analogs of the peptidase ...
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JPH08225502A |
PURPOSE: To efficiently obtain β-aminoenone useful as a basic raw material for an intermediate for medicines and agrochemicals from a readily available raw material compound by a simple operations by reacting a specific β- alkoxyaminok...
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JPH08208573A |
PURPOSE: To purify a 4,4'-bis(dialkylamino)benzophenone by efficiently and simply removing a blue by-product from a crude product of the 4,4'-bis(dialkylamino)benzophenone. CONSTITUTION: A crude product of a 4,4'-bis(dialkylamino)benzoph...
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JP2507069B2 |
New process for the synthesis of the levodopa, L-(-)-2-amino-3-(3,4-dihydroxyphenyl)propionic acid, drug used in the treatment of the Parkinson's disease. The process consists in resolving with d-camphorsulfonic acid, or with a salt ther...
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JPH08119914A |
PURPOSE: To obtain the subject new compound suitable for practical organic nonlinear optical elements having great nonlinear optical effect, excellent in chemical and thermal stability and transparency, easy to grow crystals from solutio...
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JPH08119913A |
PURPOSE: To obtain the subject compound under mild condition in high yield by oxidizing a p-dialkylaminocinnamic alcohol with manganese dioxide using a pyridine compound or an alcohol as the reaction solvent. CONSTITUTION: The objective ...
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JPH0827078A |
PURPOSE: To obtain the subject compound useful as an intermediate for medicines in a high purity by safe and simple reaction and purification operations comprising subjecting raw materials to an N-halogenation reaction at a low temperatu...
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JPH0812630A |
PURPOSE: To obtain a benzophenone derivative high in purity and discolored little compared to the case with the single oxidation process using chloranil, without the need of any repurification process. CONSTITUTION: This benzophenone der...
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JPH07316103A |
PURPOSE: To obtain the subject compound useful as an important constituent component for a pharmacologically active compound or a plant protecting agent, by adding a catalytic amount of a noncyclic secondary amine and reacting a CH acidi...
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JPH07107031B2 |
NEW MATERIAL:A compound expressed by formula I (X is H, CH3, F or OH). USE:An electron charge generator for electrophotographic sensitive substances. PREPARATION:3,4-Dichloro-3-cyclobutene-1,2-dione expressed by formula Il is reacted wit...
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JPH07107029B2 |
NEW MATERIAL:A squarylium compound expressed by formula I. USE:An electron charge generator for electrophotographic sensitive substances, capable of producing the electrophotographic sensitive substances having sensitivity over a wide ra...
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JPH07107030B2 |
NEW MATERIAL:A squarylium compound expressed by formula I (X is H, CH3, F or OH). EXAMPLE:A compound expressed by formula II. USE:An electron charge generator for electrophotographic sensitive substances, capable of producing the electro...
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JPH07103076B2 |
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JPH07285905A |
PURPOSE: To provide a method for selectively oxidizing a primary or secondary alcohol having an easily oxidizable group and a heterocycle to an aldehyde or ketone without changing the group and heterocycle. CONSTITUTION: An aldehyde or k...
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JPH0798782B2 |
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JPH07165685A |
PURPOSE: To obtain the subject compound useful as an intermediate for vat dyes, organic photoelectric materials, etc., in high yield and purity by reacting a dihalogenobenzanthrone with a specific sulfonamide compound in the presence of ...
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JPH07157673A |
PURPOSE: To provide an advantageous, environmentally tolerable process for preparing an anthraquinone imide compd. which does not cause economical and industrial problems and does not incur a danger to health. CONSTITUTION: The objective...
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JPH07149697A |
PURPOSE: To obtain in a short time in high yield the compound useful as an intermediate for dyes or medicines etc., without the need for using any toxic metal catalyst, by cyclizing under heating a 2-(2'-aminobenzoyl)benzoic acid compoun...
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JPH07149698A |
PURPOSE: To obtain in a short time in high yield the compound useful as an intermediate for dyes or medicines etc., without the need for using any toxic metal catalyst, by rearrangement under heating of a 6,11-dioxy-5,6- dihydromorphasid...
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JPH0753702B2 |
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JPH07138212A |
PURPOSE: To obtain a new aminoanthraquinone compound useful as an anti- tumor agent having reduced toxicity while retaining strong anti-tumor activity. CONSTITUTION: A compound of formula I [R1 is H, a lower alkyl or a lower alkoxy; R2 i...
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JPH0742257B2 |
The compounds of the general formula in which R<1> and R<2> each denote hydrogen, lower alkyl or lower alkenyl or together denote straight-chain alkylene having 2 to 4 carbon atoms, R<3> denotes hydrogen, halogen or lower alkyl, Q denote...
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JPH0730475B2 |
PURPOSE:To obtain high purity 1-aminoanthraquinones in a high yield without requiring troublesome separation of products or causing environmental disruption by electrolytically reducing 1-nitroanthraquinones once to the hydroquinone bodi...
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JPH0770015A |
PURPOSE: To provide a process for easily producing high-purity o- aminobenzophenone in high yield. CONSTITUTION: o-Aminobenzophenone is produced by the hydrogenative dechlorination reaction of 2-amino-5-chlorobenzophenone in the presence...
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JPH0717848B2 |
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JPH075526B2 |
This invention relates to new N-(methoxyphenacyl)-amine derivatives selected from the group consisting of (i) the N-(methoxyphenacyl)-alkylamines of the general formula (I) wherein A is OCH3, and R is C3-C8-alkyl or C3-C8-hydroxyalkyl; a...
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JPH07612B2 |
The invention relates to a process for the preparation of a compound of general formula (I)wherein R1 represents a hydrogen atom or a C1-10 alkyl, C3-7cycloalkyl, C3-7 cycloalkyl-(C1-4)alkyl, C3-6 alkenyl, C3-10 alkynyl, phenyl or phenyl...
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JPH06510277A |
A method of manufacturing 3-amino-2-cyclohexene-1-one by hydrogenating m-phenylenediamene to produce a novel intermediate salt of 3-amino-2-cyclohexene-1-imine followed by hydrolysis to produce 3-amino-2-cyclohexene-1-one. The novel inte...
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