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JPH07204511A |
PURPOSE: To obtain a catalyst having high activity for the reaction of nitriles with water and synthesize objective amides more selectively by controlling a mixture soln. of copper salt and salt of noble element which can form an alloy w...
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JPH0768205B2 |
A benzoylurea derivative represented by the formula, wherein R1 is a hydrogen atom or a fluorine atom, R2 is a trifluoromethyl group, a pentafluoroethyl group or a heptafluoropropyl group, and R3 is a hydrogen atom, a fluorine atom or a ...
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JPH07188128A |
PURPOSE: To obtain a trans, trans-isomer by efficiently forming the Schiff base of a 4,4'-diaminodicyclohexylmethane(HMDA) isomer mixture without changing a solvent, and conducting nearly complete isomerization. CONSTITUTION: (1) An HMDA...
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JPH0764796B2 |
Process for the preparation of aromatic haloamino derivatives, according to which a halonitro aromatic derivative is brought into contact with Raney nickel and hydrogen in the presence of iodide.
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JPH0761988B2 |
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JPH0759538B2 |
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JPH0753830B2 |
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JPH0751539B2 |
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JPH0749403B2 |
A novel, one-pot procedure for the preparation of N-acryloyl- alpha -amino acids involves the steps of: i) reacting a ketone, an ammonium salt, and a cyanide salt in water, optionally in the presence of ammonium hydroxide and a co-solven...
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JPH07138190A |
PURPOSE: To obtain an ester or an amide in which amino group is substituted under neutral conditions in one stage by using the amide as a raw material without forming an inorganic salt as a by-product. CONSTITUTION: This method for produ...
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JPH0745411B2 |
Amines (I) are acylated with carboxylic acid 2-benzothiazolylthio esters (A) by using (I) in the form of an acid addition salt. Pref. (I) is a 7-aminocephalosporin or 6-aminopenicillin deriv. (I) and (A) are of formulae: R1 = H or standa...
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JPH0739377B2 |
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JPH0735358B2 |
The invention relates to novel sulfonic acid esters of formula I (I) wherein R1 is C5-C6cycloalkyl which is unsubstituted or substituted by C1-C7alkyl, unsubstituted or substituted phenyl, R2 is C1-C7alkyl, R3 is phenyl which is substitu...
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JPH07101910A |
PURPOSE: To efficiently obtain an amine with a small amount of a highly active catalyst by using a specific cobalt-based catalyst, reduction-aminating a cyclic ketone or reducing an imino compound of a cyclic ketone. CONSTITUTION: A cycl...
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JPH0714906B2 |
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JPH0748322A |
PURPOSE: To provide a novel process for preparing an amine which is free from drawbacks of the conventional process, is based on an easily-available starting compd., can produce a desired compd. in a high yield, does not cause high cost,...
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JPH0748323A |
PURPOSE: To obtain an N-substd. phenylenediamine which is important in the preparation of high-purity drugs and agricultural products in high yield by reacting N-phenylquinonimine with a specified primary amine in a specified proportion....
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JPH072691B2 |
This invention relates to a new one-step process for preparation of novel N-(acyloxy-alkoxy) carbonyl derivatives useful as bioreversible prodrug moieties for drugs having a primary or secondary amine function thereon.
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JPH0711275A |
PURPOSE: To provide a process for producing a substituted acylating agent by the reaction of an enophile with an ene by the thermal route. CONSTITUTION: A process for producing a substituted acylating agent is provided wherein (a) the mo...
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JPH06104656B2 |
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JPH06345708A |
PURPOSE: To prepare extremely various carbamates by a technically simple and economically advantageous method without using phosgene, chlorine, formic ester, isocyanate, carbamoyl chloride or carbonate which safety considerations is requ...
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JPH06321841A |
PURPOSE: To prepare 3-5C-α,β-monoethylenic unsaturated aldehyde, carboxylic acid or nitrile. CONSTITUTION: At the time of the catalytic gas-phase oxidation or gas-phase ammooxidation of desired α,β-monoethylenic unsaturated compound ...
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JPH0692433B2 |
Novel isoserine compounds such as N;O-diformyl-(S)-isoserine and N-formyl-(S)-isoserine are described and used in a process for converting gentamicin B to isepamicin. Active esters are formed by reaction of the isoserine compounds with N...
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JPH0686422B2 |
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JPH0684317B2 |
A process for the transvinylation of a vinyl derivative of a Bronsted acid with a different Bronsted acid which comprises providing a liquid phase mixture containing said vinyl derivative and said Bronsted acid in the presence of a ruthe...
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JPH06293715A |
PURPOSE: To provide a method for directly and selectively aminating and/or cyanating an aromatic ring. CONSTITUTION: An aromatic compound is aminated and/or cyanated at 200-500°C temperature in the presence of ammonia by using a catalys...
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JPH06279410A |
PURPOSE: To produce the subject compound useful as a synthetic raw material for medicines and agrochemicals from 2-chloro-5-trichloromethylpyridine as a starting raw material by one pot. CONSTITUTION: 2-chloro-5-trichloromethylpyridine i...
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JPH06279375A |
PURPOSE: To obtain the subject compound excellent in purity and nondiscoloring property in high reaction rate and conversion ratio and in a high efficiency by reacting a carboxylic acid with an amine under removing formed water out of th...
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JPH0676365B2 |
The invention relates to a process of producing ketoximes, characterized in that a secondary alcohol, corresponding to the desired ketoxime, is partially oxidated in the liquid phase with 02, an oxidated mixture being thereby formed, whi...
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JPH06263779A |
PURPOSE: To obtain a new crystalline compound extremely low in racemization thereof, easily carrying out peptide cyclization, excellent in storage stability, useful as e.g. a condensation agent for amide linkage formation. CONSTITUTION: ...
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JPH0665661B2 |
The invention concerns the manufacture of nitromethane by nitration of methane in a homogeneous gaseous phase, the nitrating agent being nitric acid, nitrogen peroxide or mixtures thereof. According to the disclosed process, the molar ra...
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JPH0662631B2 |
beta -Lactam antibiotics of the formula in which A is a hydrogen atom, an optionally substituted alkyl, alkenyl, alkinyl or cycloalkyl group, a substituted or unsubstituted phenyl ring, a polycyclic aromatic ring or an optionally substit...
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JPH06210180A |
PURPOSE: To smoothly effect such an org. chemical reaction as nucleophilic substitution reaction and condensation reaction which are usually difficult under normal conditions by using alkylated cyclic inulooligosaccharide obtd. by alkyla...
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JPH06172292A |
PURPOSE: To provide a process for producing a diisocyanate compound without using phosgene during the production processes. CONSTITUTION: The production process comprise the steps of reacting carbon monoxide, oxygen and methanol with eac...
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JPH0645577B2 |
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JPH0643377B2 |
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JPH0636867B2 |
Catalysts containing one of the metals iron, cobalt or nickel or a mixture of these are prepared by reduction of the particular catalyst intermediate with hydrogen at from 80 DEG to 260 DEG C. and under from 1 to 300 bar, in the liquid p...
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JPH06135920A |
PURPOSE: To obtain a new method for synthesizing nitriles simply by irradiating compounds having an N-alkoxyimidoyl halide group with light. CONSTITUTION: This method for synthesizing a nitrile compound comprises irradiating a compound h...
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JPH0634920B2 |
The present invention relates to a process for preparing a catalyst composition containing nickel, alumina and zirconia by simultaneous precipitation of nickel, aluminium and zirconium from a mixed salt solution by means of an aqueous so...
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JPH06100518A |
PURPOSE: To obtain the corresponding hydroxylamino sugar and hydroxylamino acid in high yield from an amino sugar and amino acid having many substd. groups without changing the other substd. groups. CONSTITUTION: Aliphatic non-axial hydr...
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JPH06502867A |
A process is provided whereby organic carbonyl substrates, including esters, ketones and amides, are reduced in a reaction with a silane reducing reagent and a catalyst. According to the invention esters and ketones can be reduced to alc...
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JPH0687774A |
PURPOSE: To efficiently conduct the telomerization of conjugated alkadienes in high yield to obtain intermediates or the like useful for a synthetic resin, an epoxy compound, a surface-active agent or the like by bringing conjugated alka...
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JPH0625109A |
PURPOSE: To prepare nitrogen-containing compounds by bringing a carboxylated N-monosubstituted or N,N-disubstituted nitrogen-containing compound into contact with a specified catalyst. CONSTITUTION: This nitrogen-containing compound is p...
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JPH064578B2 |
A novel process for effectively preparing an optically active cyanohydrin comprising asymmetrically cyanating an aldehyde by reacting the aldehyde with a cyanating agent in the presence of a titanate of an optically active tartaric acid ...
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JPH0584292B2 |
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JPH0581587B2 |
PURPOSE:To obtain a schiff base useful as agricultural chemicals, drugs, a raw material for them, inhibitor for aging, liquid crystal, etc. in a short time in high yield, by reacting a carbonyl compound with a primary amine in the presen...
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JPH05294864A |
PURPOSE: To obtain a new fullerene derivative useful as a cross-linking agent and/or a nucleous constituent of star polymers. CONSTITUTION: This compd. is a polysubstd. fullerene component having more than one substd. groups selected fro...
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JPH0576461B2 |
Aliphatic, cycloaliphatic, heterocyclic aliphatic and aromatic amines are prepared in a liquid phase reaction under the influence of light energy in the presence of a specified ammonium halide photocatalyst whereby addition of N-H bonds ...
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JPH05271163A |
PURPOSE: To obtain diphenylamines by reacting a cyclohexanone with an aniline under a specific condition in the presence of a rhodium-supported catalyst. CONSTITUTION: An aniline of formula I (R1, R2 are each H, a 1-4C alkyl, 1-4C alkoxy...
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JPH05271104A |
PURPOSE: To provide a system having gentle reaction conditions allowing the use of particularly optically active and vital molecules for saponification of an acid deriv., ammonolysis or ester conversion and sepn. of polymer bond molecule...
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