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JPS5513289A |
A process, which does not pollute the environment, for the preparation of quinizarin consists in reacting a mixture of phthalic anhydride p-chlorophenol, sulphuric acid and boric acid or boric anhydride at elevated temperatures in such a...
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JPS552420B2 |
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JPS54154749A |
A process for the reductive removal of halogen atoms from amino-, acylamino- or hydroxyanthraquinones, said halogen atoms being bonded in the alpha -position and/or ortho-position to amino, acylamino or hydroxyl groups, which comprises c...
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JPS54133490A |
Novel coated catalysts and a process for their preparation by atomizing a mixture of water and a vanadium-V compound, with or without other metal compounds, and applying this mixture to carrier particles which are themselves in motion, d...
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JPS54109936A |
A process for separating p-benzoquinone as quinhydrone from the reaction solution obtained in the oxidation of phenol with oxygen in the presence of copper salts and of nitriles as the solvent, which comprises suspending and/or dissolvin...
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JPS5492945A |
Naphthoquinones derivatives of formula (I) wherein R<1> is a substituted or unsubstituted cyclo-(C3-12)alkyl group are active against Theileria in cattle and sheep. Processes for producing the compounds, pharmaceutical preparations and m...
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JPS5448726A |
1. Process for the preparation of para-benzoquinone by oxidising phenol with molecular oxygen or with a gas containing molecular oxygen, in an organic solvent, in the presence of cuprous or cupric ions and of a copper complexing agent, c...
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JPS5436244A |
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JPS5416461A |
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JPS5412334A |
p-Benzoquinone is prepared by oxidizing phenol with molecular oxygen or with a gas in which oxygen is present, in the liquid phase, in the presence of cuprous or cupric ions. The improvement resides in carrying out the reaction in the pr...
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JPS5412335A |
A synthesis of Vitamin E has the condensation of 2,4-pentanediene and 1,2-epoxy-2,6,10,14-tetramethylpentadecane including intermediates in this synthesis which uses base catalyzed condensations of aliphatic compounds to construct the Vi...
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JPS53141231A |
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JPS53141297A |
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JPS53108934A |
PURPOSE: 2-Methyl-3-prenyl-4,5,6-trimethoxyphenol of formula I (R is group of formula II, where n=0-9; A, B are H or A-B exhibits that they link with each other), for example, 2-methyl-3-decaprenyl-4,5,6-trimethoxyphenol.
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JPS5330705B2 |
1459737 Preparation of 1,4-naphthaquinone BAYER AG 21 May 1975 [2 Aug 1974] 21830/75 Heading C2C The invention comprises a process for the preparation of 1,4-naphthaquinone by passage of a gaseous mixture of naphthalene and oxygen over a...
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JPS5391141A |
The present invention provides a composition suitable for external application against skin injuries and diseases, such as ulcera, [e.g., Ulcus Cruris (indolent leg ulcer)], burns, scalds, open skin wounds, and the like, and having as it...
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JPS5324416B2 |
A process for producing quinones corresponding to anthracenes or alkylnaphthalenes in high yields and selectivities, which comprises reacting the anthracenes or alkylnaphthalenes with hydrogen peroxide in the liquid phase in the presence...
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JPS5371051A |
A process has been provided for the purification of crude anthraquinone made by (1) oxidation of naphthalene to naphthoquinone (2) reaction of the oxidation product with butadiene to give tetrahydroanthraquinone and (3) oxide-hydrogenati...
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JPS5365834A |
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JPS5317585B1 |
1364796 Quinones F HOFFMANN-LA ROCHE & CO AG 17 May 1972 [17 May 1971 17 Dec 1971] 23119/72 Heading C2C A process for the manufacture of quinones o the general formula in which at least one of the symbols R 1 , R 2 , R 3 and R 4 represen...
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JPS5312559B1 |
1300872 Halogenated biphenols GENERAL ELECTRIC CO 3 May 1971 [9 July 1970] 12819/71 Heading C2C [Also in Division C3] In a process for separating a polyphenylene oxide from the reaction product containing a tetra-organo-substituted diphe...
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JPS539210B2 |
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JPS538355A |
An apparatus for the bending of large area construction units, particularly of tightly welded tube walls for boiler construction, with a supporting table for that part of the construction unit which is not to be deformed, which is held d...
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JPS531266B2 |
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JPS5245698B2 |
1428311 Process for the production of biologically active quinone derivatives; organonickel compounds EISAI CO Ltd 29 March 1974 [6 April 1973] 14085/74 Headings C2V and C2J A novel process for preparing compounds of the Formula I wherei...
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JPS52128229A |
The treatment of multiple sclerosis with 1,8-dialkyloxy-3 carboxy anthraquinone.
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JPS5233637B2 |
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JPS5233635B1 |
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JPS5233099B2 |
A process for preparing trimethylbenzoquinone is provided which does not involve the formation of a sulphonic acid intermediate which comprises oxidising 2,3,6-trimethyl-phenol directly with manganese dioxide in an aqueous solution conta...
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JPS5293758A |
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JPS5287147A |
Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alkylphenols, alkoxyphenols or 1-naphthols are prepared by contacting an aqueous mixture of the phenol or naphthol with oxygen in the presence of suff...
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JPS5287130A |
Synthetic 2,3-dimethoxy-5-methyl-1,4-benzoquinone is converted into a series of new 6-alkyl derivatives. These 6-alkyl derivatives have straight carbon chains which are both saturated and unsaturated. The unsaturated derivatives contain ...
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JPS5248648A |
The pesticide contains an inert carrier and, as active ingredient, at least one compound of the formula I in which R1 denotes a straight-chain, branched or cyclic alkyl radical having 8 to 14 carbon atoms, R2 denotes an alkenyl radical h...
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JPS5210831B1 |
1397275 Naphthoquinone NIPPON STEEL CHEMICAL CO Ltd 18 July 1972 [21 July 1971] 33597/72 Heading C2C [Also in Division B1] Naphthoquinone is made by the vapour phase oxidation of naphthalene with molecular oxygen in the presence of a cat...
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JPS5217458A |
In the preparation of anthraquinone by reacting a mixture containing naphthalene, phthalic anhydride and tetrahydroanthraquinone with oxygen at elevated temperature while simultaneously separating off at least part of the naphthalene, th...
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JPS5217457A |
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JPS5212139A |
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JPS51141857A |
The nitro group of an alpha -nitroanthraquinone is replaced by chlorine by reaction with an ionic chloride in a solvent in the presence of an acid or of a compound which eliminates an acid. The ionic chloride may be an alkali metal, alka...
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JPS51131844A |
1499276 Aryl ketones KOPPERS CO Inc 14 April 1976 [18 April 1975] 15409/76 Heading C2C Aryl ketones are obtained by acylating a non-hydroxylated aromatic compound with an aliphatic or aromatic carboxylic acid or anhydride thereof in the ...
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JPS5125021B2 |
Anthraquinone is purified by using cyclohexanone alone or in admixture with cyclohexanol, or either of these substituted by methyl, as the solvent for the purification of crude anthraquinone. Preferably a mixture of cyclohexanone and cyc...
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JPS5170195A |
A catalyst which is suitable as an oxidation catalyst, especially in the preparation of naphthoquinone or phthalic anhydride from naphthalene and molecular oxygen and which contains the elements Si, V, S, O and at least one alkali metal,...
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JPS5168551A |
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JPS5168558A |
A process for the preparation of a chloroanthraquinone or a bromoanthraquinone comprising treating a molten mixture of at least one nitroanthraquinone and diluent with halogen at a temperature of about 180 to 300 DEG C, the diluent being...
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JPS5159848A |
Anthraquinone is produced by oxidation of diphenylmethane compounds in the gaseous phase in the presence of oxygen-containing compounds of vanadium and titanium and at least one other metal in a specific ratio by weight. Anthraquinone pr...
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JPS5143752A |
1457499 Anthraquinone BAYER AG 22 May 1975 [2 Aug 1974] 22270/75 Heading C2C An anthraquinone is prepared by reacting a 1,4-naphthoquinone with trans-1-acetoxybutadiene in a polar solvent at from 30 to 60 C., optionally in the presen...
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JPS5143748A |
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JPS5110229B2 |
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JPS516140B2 |
In the production of anthraquinone wherein naphthalene is oxidized to form naphthoquinone and phthalic anhydride, the naphthoquinone is reacted with butadiene to form tetrahydroanthraquinone, and the tetrahydroanthraquinone is reacted wi...
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JPS5119755A |
Anthraquinone is manufactured by oxidation of diphenylmethane compounds in the gas phase, in the presence of vanadium(V) oxide and titanium dioxide in a specific weight ratio. The anthraquinone which may be manufactured by the process of...
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JPS514991B1 |
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