Patents
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Patents for C07C 46 - Preparation of quinones (1,836)
12/2013
12/04/2013CN101906030B Method for extracting juglone from walnut green husk residue by microwave reflux
11/2013
11/27/2013CN102584560B Synthesis method of compounds of 5-benzoyl-1, 4-naphthaquinone with similar gossypol effect
11/06/2013CN102660378B Method for extracting natural coenzyme Q10 by using palm residue
10/2013
10/31/2013WO2013159593A1 Method for extracting coenzyme q10 and application of coenzyme q10
10/30/2013CN103373913A Extraction method of alkannin
10/30/2013CN102070431B Method for synthesizing saprorthoquinone
10/29/2013US8568779 Method for producing coenzyme Q10 particle
10/24/2013US20130281740 Method for Cultivation of Monarda Fistulosa for Production of Thymoquinone
10/23/2013EP2651868A2 Process for the preparation of atovaquone
10/23/2013CN103360230A Synthesis method of 2-ethylanthraquinone
10/23/2013CN103360229A Method for preparing 2-ethylanthraquinone by continuous 2-(4-alkylbenzoyl)benzoic acid ring-closing reaction
10/23/2013CN102126942B Method for synthesizing hypericin
10/16/2013CN103352092A Method for preparation of chrome tanning agent and combined production of vitamin K3 through using chromium-rich sludge
10/16/2013CN102584559B Method for separating and purifying 2,3,5-trimethyl benzoquinone
10/10/2013WO2013098832A3 Novel process for selective isolation and purification of 2-[4-(4-chlorophenyl) cyclohexyl]-3-chloro-1, 4-naphthoquinone and atovaquone
10/10/2013US20130267717 Process for the preparation of atovaquone
10/09/2013CN102633614B Preparation method of 2, 3, 5-trimethyl benzoquinone (TMBQ)
10/02/2013CN102108047B Method for preparing 2,3,5-trimethylhydroquinone
09/2013
09/25/2013CN103319322A Method, using response surface methodology, for optimizing ultrasonic extraction technology of free anthraquinone from cassia seeds
09/25/2013CN103319321A Extraction method of juglone and derivative in walnut green tangerine peel
09/25/2013CN102219768B Perylenequinone compounds and their extraction and separation method and use
09/19/2013US20130245324 Process for the oxidation of hydrocarbons with the use of iridium metal catalyst complexes
09/18/2013CN103304585A Copper complex, preparation method and application thereof
09/18/2013CN103304396A Method for separating and purifying 1403C from fermentation liquid of 1403C
09/11/2013CN103288619A Synthesis method of novel gossypol derivative
09/11/2013CN103288618A Synthesis method of thymoquinone serving as blood vessel inhibition medicament
09/11/2013CN103285932A Catalyst for preparing naphthoquinone
09/04/2013CN103274953A Naphthol and o-naphthoquinone compounds thereof and preparation method and medical application thereof
09/04/2013CN103274920A Efficient hypericin synthesizing method initiated by monochromatic light
09/04/2013CN102329208B Method for extracting chimaphilin from one-flowered wintergreen
09/04/2013CN102079696B Hypericin purifying method
08/2013
08/22/2013WO2013121190A1 Method for preparing a herbicidal compound
08/21/2013CN103254056A Method and device for preparing vitamin K3
08/08/2013US20130204019 Yield-efficient process for the production of highly pure 2-methyl-1, 4-naphthoquinone and its derivatives
07/2013
07/31/2013CN203090918U Reaction kettle for preparing anthraquinone by one-pot process
07/24/2013CN102050716B Method for separating and purifying 2-ethyl anthraquinone from sulphuric acid
07/17/2013CN103204771A Naphthoquinone or naphthalenone compounds and preparation methods thereof and applications of drugs thereof
07/17/2013CN102432864B Method for reducing content of quinine in polyphenyl ether product and recovering biphenyl diquinone
07/17/2013CN102219665B Method for synthesizing 2,3,5-trimethylbenzoquinone and 2,3,5-trimethylhydroquinone
07/10/2013EP2611763A1 Process for industrial production of 2 -methyl - 1, 4 - naphthaquinone
07/10/2013CN103193613A Method for separating emodin by means of co-crystallization
07/03/2013CN102199080B Method for preparing shikonin with high optical purity by asymmetric total synthetic method
06/2013
06/26/2013CN103172508A Method for preparing 1,4-benzoquinone by directly oxidizing benzene
06/19/2013CN102295549B Benzindene triptycene and spirofluorene-benzindene triptycene derivative and preparation method thereof
06/12/2013CN102241577B Preparation method of 2,3,5-trimethylhydroquinone
06/12/2013CN101987815B Purification process for preparing high-purity coenzyme Q10
06/12/2013CN101863766B Beta-hydroxyisovalerylshikonin derivative and preparation method thereof
05/2013
05/29/2013CN101906028B Method for extracting benzoquinone compound in lithospermum
05/22/2013CN101665422B Method for preparing trimethylbenzoquinone with resin-supported catalyst
05/08/2013CN103086864A Shikonin tetramer compound and purpose thereof in pharmacy
05/08/2013CN103086863A Alkannin dimer compounds and uses of the same in drug preparation
05/08/2013CN103086862A Hydroxydecyl quinone derivative for treating or preventing nerve diseases
05/08/2013CN103086861A Hydroxydecyl benzoquinone derivative and application thereof
05/01/2013CN103073409A Method for separating and purifying emodin in Rhizoma Polygoni Cuspidati
05/01/2013CN102675077B Two preparation methods of 2, 3, 5 6-chloranil
05/01/2013CN102391092B Method for preparing high-purity coenzyme Q10 in large scale
04/2013
04/24/2013CN103055790A Equipment of preparing anthraquinone by one-kettle method and method of preparing anthraquinone using same
04/10/2013CN103030549A P-benzoquinone derivative and application thereof
04/10/2013CN102180782B Method for synthesizing hypericin
03/2013
03/28/2013WO2013041676A1 Process for preparing chiral quinone
03/27/2013EP2573063A1 Process for preparing chiral quinone
03/27/2013CN102993247A Method for separating anthraquinone ingredient of semen cassiae by low-pressure and medium-pressure preparative column
03/27/2013CN102992989A Synthetic method of beta-menadione
03/21/2013WO2012173909A3 Synthesis of 7-acetyleno quinone methide derivatives and their application as vinylic polymerization retarders
03/20/2013CN102976915A Preparation method of 1,4-naphthaquinone
03/20/2013CN102976914A Method for preparing p-benzoquinone
03/06/2013CN102153457B Method for preparing 2,3,5-trimethyl hydroquinone intermediate (2,3,5-trimethyl benzoquinone) by unsym-trimethyl benzene oxidation
02/2013
02/27/2013CN102134188B Tetrahydroanthraquinone compound Prisconnatacin and preparation method and application thereof in preparation of anti-tumor medicaments
02/06/2013CN102220387B Method for extracting and purifying resveratrol and emodin from fresh giant knotweed
01/2013
01/30/2013CN202705269U Stable pressure type oxyanthraquinone production device
01/30/2013CN202700475U Anthraquinone oxidizer with reinforced heat insulation function
01/30/2013CN101687752B Process for the preparation oftrans-2,3-disubstituted naphthoquinones
01/24/2013US20130023663 Substituted stilbenes and their reactions
01/16/2013EP2545025A1 Synthesis of alpha-tocopherolquinone derivatives, and methods of using the same
01/16/2013CN102884037A Synthesis of alpha-tocopherolquinone derivatives, and methods of using the same
01/16/2013CN102875351A Technical method for extracting emodin from polygonum cuspidatum
01/09/2013CN102863324A Extracting method of mapau quinone
01/03/2013WO2013002265A1 Method for producing 2-chloromethylbenzaldehyde, 2-chloromethylbenzaldehyde-containing composition, and method for storing same
01/02/2013CN202643600U Energy-saving oxyanthraquinone production device
01/02/2013CN202643599U Power-saving type Oxyanthraquinone production device
01/02/2013CN102850203A Juglone derivative and application thereof
01/02/2013CN102850194A Method for extracting and separating chemical components of cassia seed
01/02/2013CN102060397B Method for treating waste water generated in extraction process of active ingredient of polygonum cuspidatum
12/2012
12/20/2012WO2012173909A2 Synthesis of 7-acetyleno quinone methide derivatives and their application as vinylic polymerization retarders
12/20/2012CA2835868A1 Synthesis of 7-acetyleno quinone methide derivatives and their application as vinylic polymerization retarders
12/19/2012CN102826988A Extraction method of horminone
12/19/2012CN102826987A Extraction method of belamcandaquinone A
12/12/2012CN101575278B Method for preparing high purity dihydroirisquinone, pallason B
12/12/2012CN101575277B Method for preparing high purity irisquinone, pallason A
12/05/2012CN101711779B Application of Selaginella pulvinata (Hook.et Grev.) Maxim. extract in preparing medicaments for resisting Alzheimer diseases
11/2012
11/28/2012CN102795983A Anthraquinone derivative material and preparation method and application thereof
11/21/2012EP2523931A1 Yield-efficient process for the production of highly pure 2-methyl-1,4-naphthoquinone and its derivatives
11/15/2012WO2012153162A1 Novel method for preparation of atovaquone
11/14/2012CN102775291A Emodin derivative and application thereof in preparing antibacterial agents
11/14/2012CN102775290A Preparation method of 2-(chloromethyl)-5,6-dimethoxy-3-methyl-1,4-para benzoquinone
11/07/2012CN202516322U Drying equipment for quinones products
11/07/2012CN202516321U Drying device for quinones products
10/2012
10/31/2012CN102757301A Method for oxidizing phenol
10/24/2012CN102744076A 1, 4-naphthoquinone catalyst and preparation method thereof
10/17/2012CN102731285A Anthraquinone compounds and applications thereof
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