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JPS5111725A |
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JPS511455A |
Substituted naphthoquinones of the formula (I) and pharmaceutically acceptable salts thereof wherein R1, R2, R3 and R4 represent alkyl, aryl, alkoxy, hydroxy, hydrogen or halogen or any two of the groups R1, R2, R3 and R4 taken together ...
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JPS50160254A |
Cpds. of formula (I) and their pharmaceutically acceptable salts, and inters. of formula (II) are new: (where R1-4 are each H, halogen, alkyl or alkoxy; or any two of R1-4 together with the C atoms to which they are bonded may form an op...
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JPS50125987A |
A method of activating inactive copper salt catalysts for phenol oxidation by the addition of acid.
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JPS5026535B1 |
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JPS5075218A |
Alpha-dihydroxyanthraquinones used as intermediates in the synthesis of many dyestuffs, such as the Alizarin Saphirols (e.g. Color Constitution No. 63000, 63005, 63010, 63011, 63315 and 63610) can be replaced on an equimolar basis by alp...
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JPS5063018A |
Dioxazine dyestuffs of the formula WHEREIN THE A denote aromatic radicals, especially benzene radicals, and the X denote alkoxy, aralkoxy, aryloxy, alkylmercapto, aralkylmercapto or arylmercapto groups, and, in the case that X denotes an...
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JPS5018452A |
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JPS505341A |
Trimethylbenzoquinone is made by oxidizing isophorone with a thallic compound in the presence of water and preferably an acid.
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JPS504033A |
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JPS49128937A |
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JPS4940219B1 |
Quinones of the formula:
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JPS49108032A |
2,3,6-Trimethyl-phenol is converted to trimethyl hydroquinone by oxidising the phenol with hydrated manganese dioxide in the presence of an aliphatic carboxylic acid containing 1-3 carbon atoms and then reducing the resulting benzoquinone.
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JPS49102634A |
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JPS4934978B1 |
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JPS4930911B1 |
1,223,446. Silver and mercury carbonate compositions. SCHERICO Ltd. 14 Aug., 1968 [21 Aug., 1967], No. 38917/68. Heading C1A. [Also in Division C2] An oxidizing composition comprises silver and/or mercury carbonate dispersed on an inert ...
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JPS4954337A |
Process for the manufacture of tetraaryloxybenzoquinones of the formula WHEREIN R denotes an aromatic radical, characterised in that a tetrahalogeno-1,4-benzoquinone is reacted with an alkali metal salt of an aromatic hydroxy compound in...
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JPS4936642A |
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JPS4924931A |
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JPS498246B1 |
Pharmaceutical solutions, especially for parenteral administration, consist of stable aqueous solutions containing coenzyme Q and comprising coenzyme Q, especially coenzymes Q4 to Q10, water and sufficient polyoxyethylene-(hydrogenated c...
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JPS4840341B1 |
1,268,653. Trimethylbenzoquinone. BADISCHE ANILIN- & SODA-FABRIK A.G. 12 Aug., 1969 [13 Aug., 1968], No. 40176/69. Heading C2C. Trimethyl-p-benzoquinone is prepared by reacting 2,3,6-trimethylphenol with oxygen in the presence of a cobal...
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JPS4878101A |
Process for the liquid phase oxidation of organic compounds, particularly the oxidation of an aromatic nucleus to the corresponding quinone, using an aqueous solution of a persulphate compound as oxidising agent in the presence, as catal...
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JPS4867233A |
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JPS4861463A |
Production of anthraquinone by catalytic oxidation of indans with oxygen in the presence of a vanadium (V) compound with one or more than one compound of thallium and antimony. Anthraquinone which can be prepared by the process according...
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JPS4834155A |
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JPS4810779B1 |
1,232,524. Benzoquinones. CIBA GEIGY A.G. 18 July, 1969 [29 July, 1968], No. 36293/69. Heading C2C. Compounds of the formula where R is an alkyl, alkenyl or cycloalkyl radical, X 1 is H or a substituent and X 2 is halogen or another elec...
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