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JPH02117631A |
PURPOSE: To obtain 1-(4'-isobutylphenyl)ethanol useful as an intermediate for ibuprofen by hydrogenating 4-isobutylacetophenone in the absence of a solvent and in the presence of a treated active spongy Ni catalyst precleaned with an org...
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JPH0217533B2 |
The invention relates to a process for the preparation of optionally p-chlorine-substituted 2,6-diaminotoluene, which is characterized in that 3,4-dichlorotoluene is dinitrated in the presence of an inert, water-immiscible, organic solve...
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JPH02104555A |
PURPOSE: To obtain 4-aceotoxyphenylmethyl carbinol useful for the preparation of an adhesive, etc., without a side reaction efficiently from an economical standpoint by heating 4-acetoxyacetophenone in the absence of a solvent with a spe...
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JPH0216305B2 |
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JPH02101047A |
PURPOSE: To obtain the subject compd. useful in many kinds of chemical producing processes such as polyamide so as to have good color characteristics by purifying crude phenyl ester of aromatic carboxylic acid by hydrogenation treatment ...
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JPH0285249A |
PURPOSE: To obtain the subject substance useful as an intermediate for β-lactam antibiotic substance, etc., in high efficiency at a low cost by carrying out the reduction reaction of 4-chloro-3-hydroxybutyronitrile simultaneous to the c...
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JPH0278646A |
PURPOSE: To obtain a compound useful for the production of poly(4- hydroxystyrene) advantageously by heating 4-acetoxyphenylmethyl carbinol in the presence of a catalytic amount of an acid catalyst at specified temperature for a specifie...
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JPH0210198B2 |
In order to improve the wear resistance properties of lubricants, at least one compound of the following formula is incorporated therein: (I) Rf is a perfluorinated radical, a=0 to 10, b=0 or 1 (if a=o and c=1), c=1 to 4 (2 if a NOTEQUAL...
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JPH029566B2 |
A process for the preparation of a 3-bromo-4-fluorobenzaldehyde acetal of the formula in which R1 is methyl or ethyl, which comprises reacting a 3-bromo-4-fluoro-benzoic acid halide with ammonia to form 3-bromo-4-fluoro-benzoic acid amid...
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JPH029598B2 |
The invention is a new family of phosphine compounds which can be used to make optically active metal coordination complex catalysts which combine high efficiency with a capability of performing rapidly (high efficiency and rapidly being...
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JPH026339B2 |
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JPH02245A |
PURPOSE: To obtain the subject compd. useful as an intermediate at an economical cost by reacting 4-dimethylaminobenzonitrile with bromine and subsequently treating the reaction product with alkali methoxide in the presence of copper bef...
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JPH0153868B2 |
1. A process for the production of beta-hydroxy-propionic acid amide by the conversion of acrylonitrile with water in the presence of basic catalysts, characterized in that the conversions carried out in the presence of metals and/or met...
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JPH0149265B2 |
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JPH0149135B2 |
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JPH01258651A |
PURPOSE: To obtain the subject compound useful as a raw material for aromatic polyamides, polyimides, etc., in high yield, by using dinitrodiphenyl ethers or nitrophenyl aminophenyl ethers as a raw material and reducing the material with...
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JPH01242559A |
PURPOSE: To obtain the subject compound useful as a raw material for pharmaceuticals, etc., in high selectivity at a low cost, by reacting a polyhydric alcohol with ammonia in the presence of a nickel catalyst containing sulfur, selenium...
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JPH0138438B2 |
Composition consisting of from less than 100% to more than about 80% of trans-1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol and a definite amount, but not more than about 20%, of cis-1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol.Process for prepar...
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JPH0135811B2 |
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JPH0134652B2 |
In the manufacture of sheet metal elements or strip having a catalytic surface structure, a mixture of skeleton material powder, and of Raney alloy powder is rolled onto the starting sheet metal element or strip substrate, sintered in a ...
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JPH01149755A |
NEW MATERIAL: A compd. of formula I (X is O, S; Y is F, Cl; (n) is 1, 2). EXAMPLE: 2-Fluoro-4-amino-trifluoromethoxy-benzene. USE: The compd. is useful as an intermediate for synthesis of a pest control agent and bactericidal and fungici...
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JPH01146871A |
NEW MATERIAL: An aminopropylimidazole of formula I (R, R', R" are independently H, a 1-6C alkyl). EXAMPLE: 1-Aminopropyl-2-ethyl-4-methyl-imidazole. USE: The compd. is useful as an accelerator and hardener for epoxy resin systems. PROCES...
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JPH0125748B2 |
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JPH0122252B2 |
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JPH0119373B2 |
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JPH0116836B2 |
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JPS6466150A |
PURPOSE: To selectively obtain O-(aminomethyl)phenol in high yield by reducing 2-(aminomethyl)-4-halo-phenols in the presence of Raney cobalt, Raney copper or Raney iron based catalyst. CONSTITUTION: A compound expressed by formula I (R1...
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JPS6450834A |
PURPOSE: To obtain the titled compound, such as a raw material for alkyd polymers, antifreeze, brake fluid, etc., by hydrogenating 2-chloropropionaldehyde in the presence of a heterogeneous hydrogenation catalyst in a hydroxy group- cont...
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JPS6411017B2 |
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JPS6434932A |
PURPOSE: To industrially and advantageously obtain diols useful as an intermediate for agricultural chemicals, etc., under mild condition in a short time, by reacting aldehydes corresponding to the aimed compound in the presence of an ac...
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JPS6416751A |
PURPOSE: To obtain a compound useful as an intermediate for emulsifying agent, dispersing agent, rust-proofing agent or textile softener or the like in good yield, by reacting primary or secondary amines with formamide in the presence of...
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JPS649963A |
PURPOSE: To produce 3-aminopropanol under a mild condition inexpensively, by catalytically hydrogenating ethylene cyanohydrin in the presence of a Raney nickel catalyst by using a solvent of an alcohol containing a small of ammonia. CONS...
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JPS64368B2 |
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JPS6366292B2 |
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JPS63307832A |
A process for the preparation of alkanediols by hydrogenation of alkynediols of from 3 to 8 carbon atoms in which a solution of the alkynediol in an alcohol of from 1 to 8 carbon atoms, the mass fraction of alkynediol being more than 5%,...
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JPS63294948A |
PURPOSE: To improve the bonding strength of a molded body to a metal body by superposing the molded body obtd. by compression-molding a specified mixture on the metal body, and expanding the molded body by heating in the absence of oxyge...
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JPS63290850A |
PURPOSE: To obtain the titled compound which is an intermediate for functional chemicals, such as medicines, agricultural chemicals or dyes, without containing defluorinated compounds which are by-products, by reducing fluorinated nitrob...
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JPS63287752A |
PURPOSE: To obtain the titled compound useful as an emulsifier, dispersant, rust-proofing agent, etc. in one step and high yield at a low cost, by continuously reacting a compound having nitrile group with formaldehyde in the presence of...
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JPS6355498B2 |
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JPS63256136A |
PURPOSE: To produce the title methanol reforming catalyst having excellent low-temp. activity and which is not deteriorated for a long period by incorporating a Raney-type catalyst consisting of the copper, nickel, and zinc obtained by i...
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JPS63250350A |
NEW MATERIAL:The compound of formula I (n is 2W8; R is n-valent group obtained by removing hydroxyl group from n-valent polyoxyalkylene polyol). USE: Useful as a plastic raw material such as epoxy resin hardener and heat- resistant and f...
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JPS63246353A |
NEW MATERIAL:A polyoxyalkylene polyol derivative expressed by formula I (n represents 2W8; R represents n-valent group, such as a group obtained by removing hydroxyl groups from n-valent polyoxyalkylene polyol). USE: Useful as a raw mate...
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JPS6348267B2 |
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JPS63230694A |
A process for producing a silanic or siloxanic compound containing at least one cycloalkylic ring by hydrogenation of a corresponding particularly defined derivative containing at least one aromatic ring in the presence of a Raney nickel...
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JPS6346054B2 |
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JPS6345649B2 |
n-Octanol is obtained by (i) reacting butadiene with water in a solution containing water, a carbonate and/or bicarbonate salt of a monodentate tertiary amine, and sulpholane in the presence of a palladium compound and a hydrophilic mono...
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JPS63216850A |
PURPOSE: To obtain a compound useful as a raw material for dobutamine hydrochloride which is a cardiotonicum in short process and high yield without discharging a substance which causes pollution, by hydrogenating 4-(4'- hydroxyphenyl)-2...
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JPS63208548A |
2,3,5,6-Tetrafluorobenzoic acid is prepared by hydrogenolysis of pentafluorobenzoic acid (esters).
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JPS63201150A |
There is described a novel process for the preparation of optically active beta -methylcholine from optically active 3-chloro-2-oxypropyltri- methylammonium chloride.
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JPS63196561A |
PURPOSE: To obtain the titled compound useful as a raw material for typtophan, etc., in high efficiency, by reacting anilines with ethylene glycols in the presence of a specific high-silica crystalline metal silicate as a catalyst. CONST...
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