Patents
Patents for C07C 46 - Preparation of quinones (1,836)
06/1998
06/16/1998US5767327 Dissolving substituted biphenyl compound in alkanoic acid or alkanediol solvent, adding peroxide or oxygen oxidizing agent to form diphenoquinone
05/1998
05/07/1998WO1998018746A1 Method for preparing trimethylbenzoquinone
05/07/1998CA2267089A1 Method for preparing trimethylbenzoquinone
04/1998
04/28/1998US5744624 Saponification, salt formation, from diester )
04/28/1998US5744623 Terpene-quinones with antitumour activity
04/01/1998CN1177954A Method for synthesising 2 -ethyl -anthraquinone
03/1998
03/24/1998US5731313 Use of anthracyclinone derivatives in amyloidosis
03/18/1998EP0662004B1 Use of persistent free-radicals in magnetic resonance imaging
03/18/1998CN1176233A Low thickness antifragmentation plates
03/04/1998EP0826490A2 Low thickness antifragmentation plates
03/03/1998US5723675 Method for preparing anthraquinones
02/1998
02/28/1998CA2213981A1 Low thickness antifragmentation plates
02/11/1998CN1172791A Distillation process for improving yield of pure products from crude anthracene
01/1998
01/27/1998US5712416 Oxidation and condensation of phenol to form benzoquinone in the presence of oxygen transfer catalysts of iron, manganese and chromium dihydrodibenzotetraza(14)annulenes
01/27/1998US5712402 Catalytic applications of mesoporous metallosilicate molecular sieves and methods for their preparation
01/20/1998US5710292 Rhenium catalysts
01/20/1998CA1339634C Process for the preparation of 4-demethoxydaunomycinone, the aglycone of 4-demethoxy-daunorubicin
01/15/1998WO1998001410A1 Process for the preparation of optically active anthracyclinones and intermediates thereof
01/08/1998WO1997031936A3 Novel ortho-naphthoquinone derivatives, novel synthesis therefor, and their use in the inhibition of neoplastic cell growth
01/07/1998EP0815069A1 Method for synthesising 2-ethyl-anthraquinone
12/1997
12/23/1997US5700448 Contrast media
12/17/1997EP0812816A1 Process for producing quinones
12/17/1997EP0672019B1 Process for recovering sulfur and hydrogen from hydrogen sulfide
12/16/1997US5698744 Process for the selective oxidation of compounds
12/09/1997US5696276 Process for preparing 5,8-dihydroxynaphthoquinone derivatives, novel 5,8-dihydroxynaphthoquinone derivatives and their use as anticancer agent
11/1997
11/11/1997US5686635 Vitamin k and coenzyme intermediates
10/1997
10/29/1997EP0802730A1 Pesticidal compounds
10/29/1997EP0802729A1 Pesticidal compounds
10/22/1997EP0801639A1 Method for preparing substituted anthraquinones and use thereof for preparing rheins
10/14/1997US5677471 Process for the preparation of quinone derivative
10/08/1997EP0799813A2 Distillation process for the recovery of pure products from crude anthracene
09/1997
09/30/1997US5672725 Oxidation of corresponding dihydroxy compound using sulfuryl chloride
09/30/1997US5672607 Antiviral naphthoquinone compounds, compositions and uses thereof
09/30/1997US5672556 Oxidation catalysts
09/16/1997CA2030942C Process for preparation of 2-substituted-1, 4-naphthoquinone
09/10/1997CN1158837A Manufacture of vitamin K1
09/04/1997WO1997031936A2 Novel ortho-naphthoquinone derivatives, novel synthesis therefor, and their use in the inhibition of neoplastic cell growth
07/1997
07/02/1997CN1153508A Naphthoquinone derivs.
06/1997
06/25/1997EP0780357A1 Preparation of vitamin K1
06/19/1997WO1997021709A1 Use of mono- or diketone tetracyclic derivatives, resulting novel compounds and therapeutical use thereof
06/19/1997WO1997021684A1 Use of tricyclic 1,4-dihydro-1,4-dioxo-1h-naphthalene derivatives, resulting novel compounds and therapeutical use thereof
06/19/1997CA2240279A1 Use of tricyclic 1,4-dihydro-1,4-dioxo-1h-naphthalene derivatives, resulting novel compounds and therapeutical use thereof
06/10/1997US5637741 Oxidation of 2-methylnaphthalene with hydrogen peroxide and-or organic peracid in carboxylic acid solution in presence of palladium compound
06/04/1997EP0776328A1 8-fluoro-anthracyclines, processes for their preparation and pharmaceutical compositions containing them
05/1997
05/09/1997WO1997016404A1 Method for preparing substituted anthraquinones and use thereof for preparing rheins
05/07/1997EP0681578B1 Antiviral naphthoquinone compounds, compositions and uses thereof
05/07/1997DE19541262A1 Production of 1,4-cyclohexane:di:one compounds
04/1997
04/22/1997US5623040 Polymerisable photochromic naphthacenediones, polymers of these monomers, process for their preparation and the use thereof
04/01/1997US5616734 Process for the catalytic oxidation of aromatic compounds
03/1997
03/26/1997EP0764886A2 Naphthoquinone derivative and electrophotosensitive material using the same
03/05/1997EP0759898A1 Naphthoquinone derivatives
03/04/1997US5608092 Intermediates for vitamin k derivatives
02/1997
02/06/1997WO1997003940A1 Novel 6-substituted-5,8-dioxy-1,4-naphthoquinone derivatives
01/1997
01/23/1997WO1997002271A1 Pesticidal compounds
01/23/1997CA2226089A1 Pesticidal compounds
01/22/1997CN1140704A Process for selective oxidation of compounds
01/22/1997CN1033855C Reduction of carboxylic esters
12/1996
12/24/1996US5587495 4-substituted anthracyclinones and anthracycline glycosides and the process for preparing them
10/1996
10/24/1996WO1996033015A1 Pretreatment of catalyst support to enhance catalytic dehydrogenation of a hydroquinone
10/24/1996CA2212892A1 Pretreatment of catalyst support to enhance catalytic dehydrogenation of a hydroquinone
10/02/1996EP0735014A1 Process for the selective oxidation of compounds
09/1996
09/26/1996WO1996029297A1 Catalytic applications of mesoporous metallosilicate molecular sieves and methods for their preparation
09/25/1996CN1131911A Anthracyclinone derivatives and their use in amyloidosis
09/24/1996US5559257 Process for the preparation of tetrachloro-1,4-benzoquinone
09/19/1996WO1996028410A1 Method for synthesising 2-ethyl-anthraquinone
09/19/1996CA2214017A1 Method for synthesising 2-ethyl-anthraquinone
09/18/1996EP0731782A1 Process for catalytically dehydrogenating anthrahydroquinone
09/11/1996EP0731078A1 Terpene-quinone with antitumor activity
07/1996
07/25/1996WO1996022269A1 Process for producing quinones
07/24/1996EP0722319A1 Anthracyclinone derivatives and their use in amyloidosis
07/18/1996WO1996021355A1 Pesticidal compounds
07/18/1996WO1996021354A1 Pesticidal compounds
07/18/1996CA2209998A1 Pesticidal compounds
07/18/1996CA2209906A1 Pesticidal compounds
06/1996
06/11/1996US5525744 Multi-step oxidation-chlorination of hydroquinone with an iron catalyst using chlorine as the oxidant; no hydrogen chloride in waste gas
05/1996
05/14/1996US5516407 Indirect cerium mediated electrosynthesis
04/1996
04/17/1996CN1120834A Ozonide reducing agent
04/04/1996WO1996010005A1 Process for catalytically dehydrogenating anthrahydroquinone
04/04/1996CA2175582A1 Process for catalytically dehydrogenating anthrahydroquinone
04/03/1996EP0704421A1 Process for producing 2-methyl-1,4-naphthoquinone
04/02/1996US5504219 Optically active compounds and intermediates thereof, and process for manufacturing same
03/1996
03/26/1996US5502214 1,2-benzoquinones and methods for making and using same
03/12/1996US5498712 Fiber-reactive, blue, cotton
02/1996
02/22/1996WO1996004895A1 Anthracyclinone derivatives and their use in amyloidosis
02/22/1996CA2173623A1 Anthracyclinone derivatives and their use in amyloidosis
02/15/1996WO1996004292A1 8-fluoro-anthracyclines, processes for their preparation and pharmaceutical compositions containing them
02/15/1996WO1996004230A1 Terpene-quinone with antitumor activity
02/15/1996CA2196752A1 8-fluoro-anthracyclines, processes for their preparation and pharmaceutical compositions containing them
02/15/1996CA2173157A1 Terpene-quinone with antitumor activity
01/1996
01/30/1996US5488119 Polymerisable photochromic naphthacenediones, polymers of these monomers, process for their preparation and the use thereof
12/1995
12/19/1995US5476955 Process for the preparation of a quinone derivative
12/19/1995CA1337762C Process for preparing 4-demethoxydaunomycinone
12/13/1995EP0686618A1 Process for the selective oxidation of aromatic compounds
12/13/1995EP0686613A1 Ozonide reducing agent
12/07/1995DE4419799A1 Organo rhenium derivs. used as catalysts
11/1995
11/30/1995WO1995032176A1 Naphthoquinone derivatives
11/30/1995CA2190152A1 Naphthoquinone derivatives
11/22/1995CN1112363A Process for preparing 5,8-dihydronaphthoquinone derivatives, novel 5,8-dihydronaphthoquinone derivatives and their use as anticancer agent
11/16/1995DE19515991A1 Ketone esp. cyclohexanone prepn. from olefinic cpd. with oxidant recovery
11/14/1995US5466711 Medicaments
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