Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 46 - Preparation of quinones
Patents for C07C 46 - Preparation of quinones (1,836)
10/2012
10/17/2012CN102731284A Method for preparing tetrahydro-2-ethyl anthraquinone from working solution for production of hydrogen peroxide by anthraquinone process
10/17/2012CN102728338A Anthraquinone degradation product regeneration catalyst and preparation method thereof
10/10/2012CN102718644A Preparation method for 2-bromoanthraquinone
10/10/2012CN102167721B Method for extracting and purifying tanshinone monomeric compounds from red sage root
10/03/2012CN101774901B Method for preparing atovaquone
10/03/2012CN101698637B High-purity emodin separation method
09/2012
09/27/2012US20120244462 Method for preparing alizarin derivative compound, novel alizarin derivative compound, surface modification method, photoelectric conversion film, photoelectric conversion element, and electrophotographic photoreceptor
09/26/2012CN202446829U Drying device for production of quinone products
09/19/2012CN102675078A Preparation method of agastaquinone
09/19/2012CN102675077A Two preparation methods of 2, 3, 5 6-chloranil
09/19/2012CN101698638B Method for extracting highly purified chrysophanic acid from roots and stems of rhubarb
09/19/2012CN101575279B Method for supercritical fluid extraction of juglone in walnut seed green skin waste residue
09/12/2012CN102666462A Yield-efficient process for the production of highly pure 2-methyl-1,4-naphthoquinone and its derivatives
09/12/2012CN102660378A Method for extracting natural coenzyme Q10 by using palm residue
09/12/2012CN102659552A Method for extracting diospyrin
09/12/2012CN102659551A Preparation method of synthetic anthraquinone
09/11/2012CA2462557C Method of stabilizing reduced coenzyme q10
09/05/2012CN101985102B Online regeneration method for chromatographic silica gel of coenzyme Q10
09/05/2012CN101495128B Isolated extract of walnuts, process for its obtaining and its use
08/2012
08/29/2012CN102649723A Method for extracting irisquinone from Chinese iris seed coat
08/29/2012CN102649722A Irisquinone purification method
08/22/2012CN102643185A Green and simple preparation method for 2,3,5-trimethylbenzoquinone (TMBQ)
08/22/2012CN101717329B Synthesis method of chloroanthraquinone
08/22/2012CN101633612B Device and process for continuously producing 2-ethyl anthracene quinone in channelization way
08/16/2012WO2012080243A3 Process for the preparation of atovaquone
08/15/2012CN102633615A Method of using embelia laeta to prepare bisexual antifertility material embelin
08/15/2012CN102633614A Preparation method of 2, 3, 5-trimethyl benzoquinone (TMBQ)
08/08/2012CN102627677A Method for separating and purifying monomer compounds from Rhizoma Polygoni Cuspidati
08/08/2012CN102627625A Schizandrin, schisanhenol and schisandrin-b derivates and application thereof
08/08/2012CN102627547A Method for purifying irisquinone
08/08/2012CN101759547B Preparation method of 2-hydroxy-1, 4-naphthoquinone
08/01/2012CN202355862U Crystal stirrer used in p-benzoquinone production
08/01/2012CN102617342A (+/-)-alkannin naphthazarin parent nucleus oxygen alkyl acylation derivant and preparation method thereof
08/01/2012CN102614158A Emodin derivative with antitumor activity and preparation method thereof
07/2012
07/25/2012EP2477957A1 Methods for preparing hypericin
07/18/2012CN102584560A Synthesis method of compounds of 5-benzoyl-1, 4-naphthaquinone with similar gossypol effect
07/18/2012CN102584559A Method for separating and purifying 2,3,5-trimethyl benzoquinone
07/18/2012CN102580330A Method and equipment for drying quinone products
07/11/2012CN102557914A Naphthazarin nucleus oxialkyl and acyl substituted alkannin derivative, its preparation and application thereof
07/11/2012CN102557913A Synthesis for hydroxyl-substituted 1,4-naphthoquinone by using 2-pyrone with one pot process
07/11/2012CN102557912A Method for saponifying coenzyme Q10 extracting solution
07/11/2012CN102552226A Application of two naphthoquinone compounds in preparing antitumor medicaments
07/04/2012CN102548945A Apogossypolone derivatives as anticancer agents
07/04/2012CN102531875A 3-Oxo-1,2-naphthoquinone analogues, preparation method and application thereof
07/04/2012CN102531874A Rhodizonic acid catalytic synthesis process
07/04/2012CN101721452B New process for improving utilization ratio of lithospermum
07/04/2012CN101514153B Synthesis method for high-purity substituted anthraquinones
06/2012
06/27/2012EP2467708A1 Quinhydrone-containing sensor
06/27/2012CN102516055A Method for further improving transfer rate of chrysophanol
06/27/2012CN102516054A Method for synthesizing 2-methyl-1, 4-naphthoquinone
06/21/2012WO2012080243A2 Novel process
06/21/2012WO2012041918A3 Process for the manufacture of hydrogen peroxide
06/20/2012CN102503799A Structure, preparation and property of p-benzoquinone novel arene derivative
06/20/2012CN102503798A Method for extracting coenzyme Q 10 from bee pollen and application thereof
06/13/2012CN102491891A Method for extracting droserone from round-leaf sundew
06/13/2012CN101575276B Method for synthesizing 2-methyl-1,4-naphthaquinone by taking ionic liquid as catalyst
06/06/2012CN102485709A Preparation method of vitamin K2 compound
06/06/2012CN101560145B Method for separating chrysophanol and physcion by silica-gel column chromatography
05/2012
05/30/2012CN101941898B Purification method of vitamin K3
05/30/2012CN101318889B Method of stabilizing reduced coenzyme Q10
05/09/2012CN102441293A Method for extracting and separating chemical component of semen cassiae
05/09/2012CN101243031B Process for the preparation of ubihydroquinones and ubiquinones
05/03/2012WO2012055253A1 Regeneration method of silica gel for chromatographing coenzyme q10
05/02/2012CN102432864A Method for reducing content of quinine in polyphenyl ether product and recovering biphenyl diquinone
05/02/2012CN102432569A Novel preparation of anticancer-active tricyclic compounds via alkyne coupling reaction
04/2012
04/05/2012WO2012041918A2 Process for the manufacture of hydrogen peroxide
04/04/2012CN102399139A 高光学纯度的紫草素和阿卡宁及其衍生物的制备方法 Shikonin high optical purity and preparation methods 阿卡宁 its derivatives
03/2012
03/28/2012CN102391096A Method for extracting favelanone
03/28/2012CN102391094A Crystallization method for preparing high-purity idebenone
03/28/2012CN102391093A Method for extracting coenzyme Q10 from tobaccos
03/28/2012CN102391092A Method for preparing high-purity coenzyme Q10 in large scale
03/28/2012CN102391091A Synthetic method for 1, 4 naphthaquinone
03/21/2012CN102381932A Phenol oxidation method
03/08/2012WO2012028905A1 Process for industrial production of 2 -methyl - 1, 4 - naphthaquinone
03/08/2012CA2809564A1 Process for industrial production of 2-methyl-1,4-naphthaquinone
03/07/2012CN102369005A Production method for ubiquinone powder for use in preparations and product thereof
02/2012
02/22/2012EP2152657B1 Process for the preparation oftrans-2,3-disubstituted naphthoquinones
02/15/2012CN102351677A Method for chemical synthesis of vitamin K2
02/08/2012EP2415467A1 Production method for ubiquinone powder for use in preparations and product thereof
02/01/2012CN102336643A Process for synthesizing benzoquinones by direct oxidation of phenols
02/01/2012CN101081809B 一种回收软锰矿粉在对苯醌生产工艺中循环使用的方法 A method for recovering Pyrolusite powder in the production process of quinone recycled
01/2012
01/25/2012CN102329210A 2, 6-di(aryl)-anthraquinone and preparation method thereof
01/25/2012CN102329209A Method for extracting emodin from giant knotweed rhizome
01/25/2012CN102329208A Method for extracting chimaphilin from one-flowered wintergreen
01/19/2012US20120012822 Aromatic compound and method for producing same
01/18/2012CN102321128A Combined extraction and purification technique for multiple active ingredients of polygonum multiflorum
01/11/2012CN102311534A Novel quinone compound and preparation method thereof
12/2011
12/28/2011CN102295549A 苯并茚并三蝶烯及螺芴-苯并茚并三蝶烯衍生物及其制备方法 Benzindenyl and triptyl and spirofluorene - benzindenyl and triptyl derivatives and its preparation method
12/28/2011CN102294258A 高铜含量Cu-SBA-15介孔分子筛的制备方法 High copper content Cu-SBA-15 mesoporous molecular sieves prepared medium
12/28/2011CN102294240A 一种用于TMBQ加氢生产TMHQ的Pd/C催化剂及制备方法 An TMBQ TMHQ hydrogenation of Pd / C catalyst and preparation method
12/14/2011CN102276438A 一种1,5（1,8）–二苯氧基蒽醌的生产方法 One kind of 1,5 (1,8) - diphenoxy anthraquinone production methods
12/14/2011CN101560144B 6,11-二氯-5,12-萘并萘醌的合成方法 Synthesis of 6,11-dichloro-5,12-naphthacene quinone
11/2011
11/23/2011CN102249887A Preparation method of 2-menaquinone
11/23/2011CN102249886A Method for preparing beta-methyl naphthoquinone through catalytic oxidation of beta-methylnaphthalene by MCM-41 molecular sieve with iron-containing framework
11/23/2011CN101508637B Method of preparing aloe-emodin
11/17/2011WO2011141595A1 Method for the catalytic oxidation of anthracenes to anthraquinones and catalytic system for carrying out said method
11/17/2011WO2011117324A3 Process for the preparation of vitamin k2
11/16/2011CN102241579A Method for synthesizing anthraquinone
11/16/2011CN102241578A Extraction method of chimaphilin
11/16/2011CN102241577A Preparation method of 2,3,5-trimethylhydroquinone
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