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JPS5320025B2 |
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JPS5320026B2 |
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JPS5320024B2 |
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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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JPS5319578B2 |
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JPS5318499B2 |
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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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JPS5315061B2 |
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JPS5350147A |
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JPS5344552A |
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JPS539210B2 |
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JPS539213B2 |
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JPS539211B2 |
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JPS539209B2 |
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JPS538766B2 |
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JPS537489B2 |
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JPS5323960A |
PURPOSE: To prepare the title compounds, useful as intermediates of dyes, in high yield with reducing the formation of tarry matter by the reaction of dinitroauthraquinones with phenol in the presence of an alkali hydroxide and a specifi...
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JPS536140B2 |
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JPS536151B2 |
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JPS5315352A |
PURPOSE: To prepare 2,2'-hydroxy-3,3'-bi-1,4-naphthoquinolyl, useful as agrichemicals and polymerization inhibitors, the reaction of 2,3-epoxy-2,3-dihydro1,4-naphthoquinone with an alkylamine in water.
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JPS5315353A |
PURPOSE: To prepare 2-hydroxy-3-methyl-1,4-naphthoquinone having the action of vitamine K, by the reaction of 2,3-epoxy-2,3-dihydro-2-methyl-1,4-naphthoquinone with a trialkylamine in water.
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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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JPS531267B2 |
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JPS531266B2 |
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JPS5250788B2 |
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JPS52142028A |
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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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JPS5238083B2 |
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JPS5233636B2 |
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JPS5233637B2 |
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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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JPS5230499B1 |
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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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JPS5265258A |
PURPOSE: Nitroanthraquinoues prepared by nitration of anthroquinoues with conc. NHO3 can be advantageously collected with an upright centrifuge by specific operations.
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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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JPS5213792B2 |
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JPS5225763A |
TITLE: 2,6 ANTHRAQUINONYLENE AMIDINES AS ANTI-AMEBIC AGENTS Novel 2,6 anthraquinonylene amidines that are effective against cecal and hepatic amebic infestations in warm-blooded animals.
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JPS525503B2 |
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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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JPS5146833B2 |
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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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JPS5195055A |
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JPS5125015B1 |
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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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