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JPH0451536B2 |
2,3,5-trimethyl-benzoquinone is produced by oxidizing 2,3,6-trimethyl-phenol in the presence of a catalyst of cupric chloride and lithium chloride in a solvent mixture of an aromatic hydrocarbon and a lower aliphatic alcohol having 1 to ...
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JPH04226972A |
PURPOSE: To provide a new 8-fluoroanthracyclin glycoside deriv. which is increased in the activity and selectivity of the known glycoside having an antitumor property and has the excellent antitumor property and also provide the pharmace...
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JPH04224538A |
PURPOSE: To provide the preparation process of an alkyltetrahydroanthrahydroquinone-containing solution, that of alkyltetrahydroanthrahydroquinone or alkyltetrahydroantraquinone and that of hydrogen peroxide. CONSTITUTION: Alkylanthraqui...
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JPH04221337A |
PURPOSE: To produce an anthraquinone compound from a para-substituted benzene and phthalic anhydride as raw materials. CONSTITUTION: 1,4-Dimethylanthraquinone is produced from para xylene and phthalic anhydride in the presence of a heter...
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JPH0449531B2 |
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JPH0449532B2 |
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JPH0448785B2 |
The invention is for a process for removing unalkylated anthraquinones from alkylated anthraquinone by forming a solution thereof, reducing the solution sufficiently so that at least part of the unalkylated anthraquinone is in the reduce...
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JPH0447655B2 |
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JPH04210958A |
PURPOSE: To obtain new naphthacenequinones used for contrast formation or light absorption for reversible photochromic systems. CONSTITUTION: A compound of formula I or II [R is 6-14C aryl which may have substituents (alkyl, alkoxy, alky...
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JPH0446939B2 |
Vitamin K3 (I; 2-methylnaphtho-1,4-quinone), vitamin K4 (IIa; 2-methyl-1,4-dihydroxynaphthalene) and vitamin K4 diacetate (IIb) are prepared by reacting 1-acetoxy-buta-1,3-diene (IV) with methylbenzoquinone (V) to give the novel compound...
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JPH0446940B2 |
1-Amino-2-phenoxy-4-hydroxyanthraquinones, which are useful as a red disperse dye for polyester fibers, and also useful as an intermediate for the production of other red disperse dyes, are produced in a high yield and purity by reacting...
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JPH04178341A |
PURPOSE: To produce the title substance with hardly forming any by-products by bringing an aromatic compound providing the title compound by oxidation into contact with an H2-containing gas and an O2-containing gas in the presence of a p...
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JPH0437816B2 |
A process for purifying crude monochloro- or monobromoanthraquinone is described. In this process, monochloro- or monobromoanthraquinone which contains by-products as impurities is mixed with a hot non-polar aliphatic solvent in such a r...
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JPH0435448B2 |
New benzo-1,4-quinones and salts thereof with organic or inorganic acid and bases have the formula I (I) wherein p is 1 or 2 and q is 0 or 1, provided that p+q is 1 or 2, R is a residue of formula II (II) wherein Q is selected from the r...
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JPH04164092A |
NEW MATERIAL:A compound expressed by formula I (R and X are H or hydroxyl-protecting group). EXAMPLE: A compound expressed by formula II. USE: A carcinostatic agent. PREPARATION: γ-Rhodomycinone is treated with trifluoroacetic anhydride...
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JPH0428248B2 |
There is described a novel process for the manufacture of hydroquinone derivatives of the formula II wherein R represents an ether protecting group, and their conversion into d- alpha -tocopherol starting from compounds of the formula I ...
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JPH04112820A |
PURPOSE: To obtain a hair-dye enabling fast-dyeing of hair without damaging the hair, free from stimulation and giving excellent feeling in use by using 1,2-hydroxy-1,4-naphthoquinone in combination with an organic compound containing ni...
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JPH0419974B2 |
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JPH0417172B2 |
PURPOSE:A reaction mixture resulting from the oxidation of 2-methyl-naphthalene is treated with a specific solvent and an aqueous bisulfite solution to separate the titled compound with which can be used as a vitamin K3 in high yield and...
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JPH0415214B2 |
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JPH04501414A |
4-substituted anthracyclinones of formula (I): wherein R represents a straight or branched alkyl, alkenyl or alkynyl group of up to 16 carbon atoms optionally substituted by (a) an aryl group which is unsubstituted or substituted by an i...
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JPH0412246B2 |
A process for oxidizing an organic compound by ceric sulfate dissolved in an aqueous sulfuric acid solution, wherein the organic compound is oxidized (1) by means of a ceric sulfate-aqueous sulfuric acid solution or a cerous sulfate-cont...
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JPH0469353A |
PURPOSE: To efficiently obtain the subject compound which is an intermediate for pigments, germicides, etc., and chloranil electrodes, additives for lubricating oils, etc., in high purity with good operating efficiency by reacting p-amin...
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JPH0412115B2 |
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JPH0449259A |
NEW MATERIAL:A toluquinone compound of formula I or II. USE: A medicine such as cerebral circulation improving agent, antiinflammatory agent, face paint or antifungal agent. Giving vasohypotonic, antiinflammatory, melanization-inhibitory...
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JPH048038B2 |
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JPH047335B2 |
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JPH0436260A |
NEW MATERIAL:Propene derivatives shown by formula I (R1 is H or methyl, when R1 is H, R2 and R3 are H or 2-methyl-2-propenyl, and when R1 is methyl, R2 and R3 are H or 2-propenyl; R4 is H or OH) and formula II. EXAMPLE: 3,5-Dimethyl-2-(2...
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JPH0436253A |
NEW MATERIAL:An optically active compound expressed by formula I [R1 to R3 are H or 1-4C alkyl; R4 and R6 are OH or protected OH, and further R4 is oxo (in said case, benzene ring has benzoquinone structure); R5 and R8 are OH or acyloxy,...
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JPH042579B2 |
1. Process for manufacturing 2-amylanthraquinone having a high content of the tert-isomer, by reaction of phthalic anhydride with tert-amylbenzene in the presence of a catalyst consisting of a mixture of hydrofluoric acid and boron trifl...
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JPH0380771B2 |
Pharmaceutical compositions comprising combinations of an ubiquinone and dry yeast extract, having a synergetic effect, useful in the treatment of muscular fatigue, senescence or diseases connected to impaired intestinal biochemism. Coen...
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JPH0379331B2 |
Trimethyl-p-benzoquinone of the formula I (I) is prepared by a process wherein A. 2,5,6-trimethylcyclohex-2-en-1-one or 2,3,6-trimethylcyclohex-2-en-1-one is reacted with air or oxygen at from 0 DEG to 150 DEG C. in a virtually anhydrous...
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JPH03258745A |
PURPOSE: To efficiently and economically obtain high-quality chloranil while improving solubility of product in reacting hydroquinone with a chlorine gas in a reaction solvent, by using an acetic acid-water mixed solvent or an acetic aci...
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JPH0372604B2 |
Use of hydroxyanthraquinones for the coloration of human keratin fibres, and process and composition in which they are used. The composition contains, in a cosmetically acceptable medium, at least one hydroxyanthraquinone of the formula:...
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JPH0372052B2 |
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JPH03246242A |
NEW MATERIAL:An optically active (S)- or (R)-pentane compound expressed by formula I (R1, R2 and R3 are H or 1-4C alkyl; R4 is hydroxy, protected hydroxy or oxo, provided that the benzene ring in the formula becomes the benzoquinone ring...
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JPH03246250A |
PURPOSE: To advantageously obtain chlorinated naphthoquinones by chlorinating the subject compounds with a hydrochloric acid solution at a specific concentration and hydrogen peroxide solution using a metal and metal chloride as a cataly...
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JPH0367065B2 |
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JPH03209343A |
NEW MATERIAL: A compd. of formula I (X is H, OH; one of R, R1 is H and the other is F; R2 is H, OH, alkoxy). EXAMPLE: 2β-acetyl2α,4α,5,12tetrahydroxy3β-fluoro1,2,3,4tetrahydr
o6,11 nephthacenedione. USE: A intermediates for novel ant...
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JPH03209374A |
PURPOSE: To obtain a microbicidal and plant growth regulating chemical containing anthracenedione derivatives. CONSTITUTION: A microbicidal and plant growth regulating chemical containing compounds of formula I [A-D are each O, NR1, CR1R...
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JPH0357096B2 |
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JPH0351697B2 |
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JPH03503174A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPH0344048B2 |
Pharmaceutical compositions having vasculoprotecting activity, containing an ubiquinone compound together with one or more compounds of flavanoid, heparinoid, terpenic or glycosidic structure, such as escin, troxerutin, asiaticoside, hep...
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JPH03151343A |
PURPOSE: To obtain the subject compound with high purity in high yield for a short reaction time, by reacting phthalic anhydride with a phenol derivative in the presence of a Lewis acid catalyst and an optional diluent in an automatic cl...
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JPH0339068B2 |
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JPH0337532B2 |
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JPH03109388A |
NEW MATERIAL:A compound expressed by formula I (A is -O- or -NH-; R is alkyl or hydroxyalkyl). USE: An antitumor agent. PREPARATION: A compound expressed by formula II is reacted with 1-7 equivalent 2-hydroxyethylamine in an inert solven...
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JPH0329777B2 |
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JPH0329054B2 |
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