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JPH0354096B2 |
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JPH0354095B2 |
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JPH03176463A |
NEW MATERIAL:A sulfonic acid ester of 4-amino-1-halo-2-butanol expressed by formula I (X is Cl or Br; R is substituted or unsubstituted lower alkyl, phenyl or benzyl) or salt thereof. USE: Useful as an intermediate for synthesizing 3-pyr...
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JPH03135435A |
PURPOSE: To reduce the hazard in using a Raney catalyst by storing a catalyst compsn. prepd. by compounding respectively specific amts. of ice and the Raney catalyst in a columnar or angular container having a hermetically sealing cap. C...
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JPH03502331A |
Disclosed is an improved process for the preparation of haloaromatic amines by the catalytic hydrogenation of halonitroaromatic compounds in the presence of a chromium-containing Raney cobalt catalyst. The catalyst gives good hydrogenati...
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JPH0332538B2 |
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JPH03106861A |
PURPOSE: To provide readily and quantitatively the subject compound useful as dyestuff intermediates in high purity by hydrogenating a specific aromatic nitro compound and a specific carboxylic acid as a starting material in the presence...
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JPH0395144A |
PURPOSE: To industrially and advantageously obtain the title compound which is an intermediate for antiallergic agent by successively carrying out acetylation, Fries rearrangement reaction, nitration and catalytic reduction reaction usin...
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JPH03501353A |
PCT No. PCT/AU88/00216 Sec. 371 Date Jan. 22, 1990 Sec. 102(e) Date Jan. 22, 1990 PCT Filed Jun. 28, 1988 PCT Pub. No. WO89/00082 PCT Pub. Date Jan. 12, 1989.Method for the production of a catalyst suitable for use in the synthesis of me...
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JPH0368541A |
PURPOSE: To aminate a carbonyl-contg. org. compd. with high selectivity to an amine product compared with that to a hydroxylated product, by reduction amination in the presence of a catalyst in a liq. solvent contg. an aminating promotor...
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JPH0365507A |
PURPOSE: To effectively and profitably remove a chlorate in a saline solution under a safe and mild condition by bringing the saline solution into contact with a chlorate decomposition catalyst under the absence of hydrogen. CONSTITUTION...
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JPH0316947B2 |
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JPH0316948B2 |
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JPH0347156A |
PURPOSE: To advantageously perform the reductive amination of the title compd. by aminating a carbonyl group or an imino group at low temp. capable of avoiding the decomposition of a nitrile group and subsequently aminating the nitrile g...
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JPH0314298B2 |
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JPH0314309B2 |
Catalytic hydrogenation of furfurylamine or tetrahydrofurfurylamine in the presence of a cobalt-based catalyst into piperidine can be industrially carried out in an organic solvent, wherein addition of ammonia is not needed. It has been ...
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JPH0338562A |
PURPOSE: To obtain a compound useful as a high purity dye intermediate selectively in a high yield by reacting a corresponding unalkylated amine with an alcohol in the presence of a hydrogenation catalyst. CONSTITUTION: In the presence o...
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JPH0338536A |
PURPOSE: To produce corresponding alcohols in a high selectivity by hydrogenating α-hydroxy ketones, especially dihydroxy acetone, in a liquid phase in the presence of a carboxylic acid. CONSTITUTION: When α-hydroxy ketones (preferably...
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JPH039914B2 |
1. Process for the preparation of 2-(2-thienyl)- and -(3-thienyl-ethylamines of the formula I : see diagramm : EP0069002,P5,F2 in which R1 and R2 , which may be the same or different, represent each a hydrogen atom, a straight- or branch...
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JPH039118B2 |
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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JPH038358B2 |
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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JPH036131B2 |
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JPH035372B2 |
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JPH031305B2 |
1. Process for the preparation of 4-amino-2,2,6,6-tetramethyl-piperidine by reacting 2,2,6,6-tetramethyl-piperidin-4-one with excess ammonia and hydrogen in the presence of hydrogenation catalysts at elevated temperature and elevated pre...
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JPH0261936B2 |
A nitrile, such as acrylonitrile, is hydrated to the corresponding amide in the presence of a Raney copper catalyst that, before use in the reaction, is partially oxidized by contact with a controlled oxidizing system comprising oxygen, ...
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JPH0257052B2 |
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JPH02280838A |
PURPOSE: To obtain a catalyst by dipping a metallic reaction tube material containing nickel and copper in a molten aluminum to form an aluminum layer on the metallic material, activating the surface of the metallic with an alkali. CONST...
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JPH02279502A |
PURPOSE: To increase the rate of heat transfer of a reactor and to increase the reaction rate by treating the Ni-contg. metal and Raney alloy deposited successively on a reaction tube made of a metal or an alloy with an aq. alkaline soln...
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JPH02275829A |
PURPOSE: To relatively readily obtain the subject compound useful as intermediate of medicine and agricultural chemical, etc., from raw material of low cost in high yield and high selectivity by reducing 3,3,3-trifluoropropanal with hydr...
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JPH02273639A |
PURPOSE: To easily obtain the subject compd. with high selectivity in high yield by catalytically hydrocracking an aq. soln. containing isoxazolines and not substantially containing an acid within a fixed bed reactor in the presence of a...
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JPH02273630A |
PURPOSE: To obtain the subject compound in high yield and to simply carry out post-treatment of waste water formed by reacting a Grignard reagent with benzaldehyde to give 1-phenyl alcohol and then subjecting 1-phenyl alcohol to hydrogen...
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JPH0251557B2 |
A new synthetic route is provided for the production of 7-(2-aminomethylphenylacetamido)-3-(1-carboxymethyltetrazol-
5-ylthiome thyl)-3-cephem-4-carboxylic acid.
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JPH0250101B2 |
A mixture of methyl anthranilate, dissolved in a water-miscible solvent, with a solution of formaldehyde is reduced in a hydrogen atmosphere in the presence of a hyrogenation catalyst at moderate temperatures and pressures to yield methy...
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JPH02268143A |
PURPOSE: To obtain novel bis(diaminopolyalkoxy)-N-alkylamine easily by contact- aminating bis(polyalkoxy)-N-alkylamine and NH as raw materials in the presence of an amination catalyst. CONSTITUTION: Bis(polyalkoxy)-N-alkylamine having st...
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JPH02247149A |
PURPOSE: To obtain the subject comd. at a high rate of conversion by conducting a catalytic dehalogenation of an α,α-dihalogenated butyraldehyde with hydrogen in the presences of a noble metal catalyst or a Raney Ni, a hydrogen halide ...
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JPH02241545A |
PURPOSE: To obtain the title catalyst element and to achieve the miniaturization of a reaction apparatus and the excellent followability to load fluctuation by bonding an Ni-Cu-Al alloy powder to the surface of the base material of a rea...
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JPH02231448A |
PURPOSE: To recover highly pure acetic acid having an improved quality as determined by the permanganate time, by treating acetic acid containing impurities and obtained from e.g. the catalytic carbonylation of methanol by hydrogenation ...
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JPH02231442A |
PURPOSE: To advantageously obtain phenol without being accompanied by forming by-product acetone by combination of a cumene synthesis process, cumene oxidation process, acid scission process for cumene hydroperoxide and a process for rec...
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JPH0240056B2 |
A process for the production of an amine composition with a high proportion of diethylenetriamine to piperazine comprising reacting ethylenediamine with itself or monoethanolamine in the presence of a nickel, cobalt or rhodium catalyst a...
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JPH02212469A |
PURPOSE: To obtain the title substance which is nseful as a medicine, agrochemical or a starting substance in the pure form simply, economically in high yield by catalytic reduction of a pyrrolidine or its salt and benzaldehyde in the pr...
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JPH02202879A |
PURPOSE: To obtain the subject compound useful as an ultraviolet absorber for plastics, coating material, etc., in high yield with a simple process in an easily separable and purifiable state by reducing 2-phenylbenzotriazole-N-oxides wi...
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JPH0234341B2 |
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JPH0231700B2 |
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JPH0231704B2 |
A new process for the preparation of the d-2-(6-methoxy-2-naphthyl)-propionic acid of formula I which comprises resolving a racemic mixture of the d- and 1-2-(5-halo-6-methoxy-2-naphthyl)-propionic acids of formula II wherein halo stands...
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JPH02180856A |
NEW MATERIAL: A compd. represented by formula I (wherein R is ethyl). EXAMPLE: 1-Diethylamino-4-nitropentene-1. USE: A medicine. A novel raw material used in the production of 4-amino-1- diethylaminopentane=(novoldiamine) represented by ...
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JPH02152938A |
PURPOSE: To economically obtain the subject useful compd. by decomposing and separating a heavy oxo fraction obtained by hydrogenating an oxo processed product and recirculating the further remaining heavy fraction to an oxo process reac...
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JPH02138176A |
PURPOSE: To obtain the title substance in a short time, in high yield and inexpensively by catalytically hydrogenating crude coal tar-based isoquinoline to give 1,2,3,4-tetrahydroisoquinoline having low sulfur content and then isomerizin...
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JPH02131437A |
PURPOSE: To obtain 1,3-dichloro- and 1-chloro-1,1,2,2-tetrafluoropropane simultaneously in high yield by allowing 1,3,3-trichloro-1,1,2,2-tetrafluoropropane to react with hydrogen. CONSTITUTION: 1,3,3-Trichloro-1,1,2,2-tetrafluoropropane...
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JPH02126940A |
PURPOSE: To obtain a catalyst having a fine structure of CuAl2 dendrites separated by thin eutectic layers by atomizing a molten Al-Cu alloy consisting of 40-50wt.% Cu and the balance Al at ≥100°C/sec cooling rate. CONSTITUTION: A mol...
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JPH02117646A |
PURPOSE: To enable the reductive amination of a high-molecular prim.-hydroxy- containing compd. in an open system by reacting a prim- or sec-hydroxyl compd. with an amine in the presence of a reductive amination catalyst and hydrogen at ...
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