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公开(公告)号:US3927045A
公开(公告)日:1975-12-16
申请号:US43298474
申请日:1974-01-14
申请人: RHONE POULENC SA
发明人: MICHELET DANIEL , RAZOUTZ MICHEL
IPC分类号: B01J23/00 , B01J31/04 , C07B61/00 , C07C27/00 , C07C37/07 , C07C39/08 , C07C46/06 , C07C67/00 , C07C45/16 , C07C37/00
摘要: 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.
摘要翻译: 通过在含有1-3个碳原子的脂族羧酸存在下,用水合二氧化锰氧化苯酚,然后还原所得到的苯醌,将2,3,6-三甲基苯酚转化为三甲基氢醌。
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公开(公告)号:US3910967A
公开(公告)日:1975-10-07
申请号:US46020374
申请日:1974-04-11
申请人: RHONE POULENC SA
发明人: MICHELET DANIEL
摘要: Trimethylbenzoquinone is made by oxidizing isophorone with a thallic compound in the presence of water and preferably an acid.
摘要翻译: 在水和优选酸的存在下,用非金属化合物氧化异佛尔酮来制备三甲基苯并醌。
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公开(公告)号:US3795708A
公开(公告)日:1974-03-05
申请号:US3795708D
申请日:1970-06-23
申请人: RUETGERSWERKE AG
CPC分类号: C07C309/00 , C07C39/08 , C07C46/06 , C07C50/02
摘要: ACCORDING TO THE INVENTION 2,3,6-TRIMETHYLHYDROQUINONE IS PREPARED FROM 2,3,6-TRIMETHYLPHENOL, BY SULFONATION OF 2,3,6-TRIMETHYLPHENOL, OXIDATION OF THE 2,3,6TRIMETHYLPHENOL-4-SULFONIC ACID FORMED AND DIRECT REDUCTION OF THE TRIMETHYLQUINONE IN AQUEOUS SOLUTION TO TRIMETHYLHYDROQUINONE; SAID SULFONATION IS CARRIED OUT IN AN ORGANIC SOLVENT WHICH IS NOT MISCIBLE WITH WATER AND IS INERT TO THE SULFONATING AGENT. THE OXIDATION IS CARRIED OUT IN AQUEOUS PHASE IN THE PRESENCE OF AN ORGANIC SOLVENT WHICH IS INERT TO THE OXIDIZING AGENT, AND IN WHICH THE QUINONE FORMED IS SOLUBLE AND THE HYDROQUINONE FORMED BY REDUCTION IS INSOLUBLE.
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公开(公告)号:US2899334A
公开(公告)日:1959-08-11
申请号:US2899334D
IPC分类号: B41M5/323 , C07C37/055 , C07C37/07 , C07C37/62 , C07C45/46 , C07C46/06 , C07C49/825 , C07C50/02
CPC分类号: C07C50/02 , B41M5/323 , C07C37/055 , C07C37/07 , C07C37/62 , C07C45/46 , C07C46/06 , C07C49/825 , Y10S428/913 , Y10S430/165 , C07C39/19 , C07C39/245 , C07C39/10
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公开(公告)号:US2730535A
公开(公告)日:1956-01-10
申请号:US31155352
申请日:1952-09-25
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公开(公告)号:US2573136A
公开(公告)日:1951-10-30
申请号:US11468849
申请日:1949-09-08
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公开(公告)号:US2446856A
公开(公告)日:1948-08-10
申请号:US50655143
申请日:1943-10-16
申请人: UNIV MINNESOTA
发明人: IRVIN SMITH LEE
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19.
公开(公告)号:US20180201599A1
公开(公告)日:2018-07-19
申请号:US15676398
申请日:2017-08-14
申请人: BASF SE
IPC分类号: C07D311/72 , C07C50/04 , C07C46/08 , C07C50/02
CPC分类号: C07D311/72 , C07C46/08 , C07C50/02 , C07C50/04
摘要: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two- or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.
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公开(公告)号:US09745242B1
公开(公告)日:2017-08-29
申请号:US15348322
申请日:2016-11-10
摘要: A method of producing thymoquinone and/or thymohydroquinone in Monarda by growing Monarda with elevated levels of carvacrol and/or thymol in the fresh plant tissue and vigorous growth, harvesting the Monarda, leaving the Monarda to senensce in the presence of oxygen and extracting the thymoquinone and/or thymohydroquinone from the senesced tissue.
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