| Document |
Document Title |
|
JPS632249B2 |
PURPOSE:To prepare the titled compound useful as a synthetic raw material of ubiquinones, in high yield and purity, by using an easily available 2,3,4,5-tetraalkoxytoluene as a starting raw material, and oxidizing the raw material. CONST...
|
|
JPS631933B2 |
A method for synthesizing p- or o-benzoquinone derivatives represented by formula III or IV by oxidizing, with an aqueous hypohalite solution having a pH of from 8 to 10, a p- or o-hydroquinone derivative represented by formula I or II O...
|
|
JPS635051A |
PURPOSE: To obtain naphthoquinone useful as a raw material for the synthesis of dyes and pharmaceuticals, etc., using a fluidized bed, in high efficiency and yield, by carrying out gaseous phase oxidization of naphthalene using a specifi...
|
|
JPS6261580B2 |
|
|
JPS6261579B2 |
|
|
JPS6261014B2 |
PURPOSE:To take out the titled substance from the top of a distilling column and recover and circulate anthraquinone form the bottoms, by melting crude anthraquinone at a specific temperature below a temperature at which the thermal poly...
|
|
JPS6261013B2 |
|
|
JPS6261012B2 |
|
|
JPS62289543A |
PURPOSE: An antitumor agent having improved cytocidal and antitumor effects, comprising 2,3,6-trichloronaphthazarin, etc., as active ingredients. CONSTITUTION: An antitumor agent comprising a compound shown by formula I [ring A is group ...
|
|
JPS62281831A |
There is provided a simple and economic process for the production of polyprene type compounds such as ubiquinones, vitamin K1, vitamin K2, plastoquinones and solanesol type compounds The process comprises gradually building up stepwise ...
|
|
JPS6256851B2 |
6-Chloro-2,3-dihydroxy-1,4-naphthoquinone and its 2,3-diesters exhibit useful anti-psoriatic activity in mammals.
|
|
JPS6255650B2 |
A color photographic sensitive material containing a polymer comprising at least 1 mol % of a repeating unit represented by formula (I) (I) wherein A represents a divalent group, n is 1 or 2, R1 represents hydrogen, a halogen atom or an ...
|
|
JPS62267362A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
|
|
JPS6254094B2 |
Various valuable intermediate products occurring in the synthesis and being useful in synthesizing doxorubicin and related compounds.
|
|
JPS6245217B2 |
A process for the preparation of anthraquinone from 1, 4, 4a, 5, 8, 8a, 9a, 10a-octahydroanthraquinone (OHAQ) which comprises contacting OHAQ as a melt with a catalyst.
|
|
JPS6239147B2 |
A compound of the general formul: wherein alpha beta means a saturated bond or a double bond; each R independently of one another is a methyl group or a methoxy group, or two R's taken together represent a group of -CH=CH-CH=CH-; n is ze...
|
|
JPS6237618B2 |
|
|
JPS6236020B2 |
|
|
JPS6236018B2 |
|
|
JPS6236021B2 |
A method of producing shikonin, having the following chemical structure (1) which method comprises dehydrating 2-(1'-acetoxy-4'-hydroxy-4'-methylpentyl)-5,8-diacetoxy-1,4-
naphthoqui none, treating the resulting product with an alkali hy...
|
|
JPS6236019B2 |
|
|
JPS6232740B2 |
1. Process for the preparation of para-benzoquinones by the oxidation of phenol, or of phenols which are monosubstituted or polysubstituted in the ortho- and/or metaposition, with molecular oxygen or a gas containing molecular oxygen, th...
|
|
JPS6232732B2 |
This invention provides processes for the production of benzene from anthracene, 9,10-anthraquinone from anthracene, and benzene from 9,10-anthraquinone. In the conversion of anthracene to 9,10-anthraquinone, anthracene is reacted with a...
|
|
JPS62120376A |
PURPOSE: To economically extract and separate naphthoquinone and phthalic acid from a slurry, by oxidizing naphthalene in the vapor phase in the presence of a catalyst using an aromatic hydrocarbon having a specified boiling point and sp...
|
|
JPS62120337A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
|
|
JPS6299339A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
|
|
JPS6299344A |
An improved process for the manufacture of the antipsoriatic agent, 6-chloro-l,4-diacetoxy-2,3-Âdimethoxynaphthalene, is herein described which involves in situ Diels-Alder coupling of 2,3-dimethoxyÂbenzo-l,4-quinone with a 3-chloro-l-...
|
|
JPS6293251A |
PURPOSE: To produce a 2-alkylanthraquinone, by adding an alkali to a diluted reaction mixture prepared by cyclizing an alkylbenzoybenzoic acid in sulfuric acid or fuming sulfuric acid and diluting the reaction mixture with water, neutral...
|
|
JPS6217217B2 |
Said material contains a quinone-type compound which corresponds to one of the formulae (A) or (B) and which is capable in reduced state and under alkaline conditions of releasing a photographically useful group e.g. a dye:wherein:each o...
|
|
JPS6216939B2 |
|
|
JPS6281347A |
PURPOSE: To readily and safely obtain the titled compound useful for biological reaction with simple treatment in and after the reaction without side reaction, by oxidizing a hydroquinone compound in the presence of a specific copper bas...
|
|
JPS6212778B2 |
|
|
JPS6261945A |
PURPOSE: To improve yield and selectivity in obtaining the aimed compound through liquid-phase oxidation of alkylphenols, by using a readily producible and inexpensive magnesium oxide catalyst containing a metal ion added. CONSTITUTION: ...
|
|
JPS628422B2 |
|
|
JPS627899B2 |
|
|
JPS625413B2 |
|
|
JPS625414B2 |
|
|
JPS623818B2 |
|
|
JPS623819B2 |
|
|
JPS623134B2 |
|
|
JPS6159302B2 |
|
|
JPS6159301B2 |
|
|
JPS6159295B2 |
|
|
JPS6159300B2 |
|
|
JPS6154795B2 |
A process for producing chroman, a compound of the formula, or an optically active compound thereof wherein R2, R3 and R4 are each a hydrogen atom or a C1-C4 alkyl group, which comprises reacting a compound of the formula, or an opticall...
|
|
JPS6148492B2 |
A process for the manufacture of anthraquinones in which o-benzyl-toluene is first oxidized with 25 to 50 weight-% nitric acid at atmospheric pressure and moderate temperatures, and then further oxidized with a more dilute nitric acid at...
|
|
JPS6148493B2 |
An anthraquinone is prepared by oxidation of o-benzyltoluene with nitric acid in two oxidation stages, the first oxidation stage being performed with a nitric acid of 25 to 50 weight-% strength under atmospheric pressure at temperatures ...
|
|
JPS61227548A |
PURPOSE: To obtain the titled substance useful for the synthesis of various agents, using an easily handleable catalyst and a mild oxidizing agent, in high yield, by oxidizing 2-methylnaphthalene with hydrogen peroxide in the presence of...
|
|
JPS61221148A |
PURPOSE: To obtain the titled compound in high selectivity, a kind of vitamin K which is an anti-hemorrhagic vitamin, without forming by-products, by oxidizing 2-methylnaphthalene by the use of a highly selective catalyst comprising spec...
|
|
JPS6137255B2 |
1511813 Preparation of quinones E I DU PONT DE NEMOURS & CO 27 July 1976 [28 July 1975] 31251/76 Heading G2C 1,4-quinones are prepared by contacting monohydroxy aryl compound unsubstituted in the position para to the hydroxyl group and s...
|
