| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 558073000 | The phosphorus is in a ring | 28 |
| 20110124899 | METHOD FOR PREPARING COMBRETASTATIN - The Invention relates to a method for preparing a combretastatin (A): formula (I) in the form of a base or of an addition salt with an acid, which comprises coupling, in the presence of a base and of T3P, the salt of the (Z)-amino compound of formula (II) with a doubly protected L-serine derivative of formula (III) in which PG denotes a group protecting the amine function, so as to obtain the compound of formula (Z)-(Ib): formula (IV), then deprotecting and opening the ring of (Z)-(Ib) in the presence of an acid, so as to obtain the combretastatin (A) in the form of a salt; and, optionally, adding a base, so as to obtain the combretastatin (A) in the form of a base, the salt of the (Z)-amino compound having been obtained by enrichment of the salt of the amino compound of formula (V) in (Z) isomer. | 05-26-2011 |
| 558076000 | Additional phosphorus containing ring | 16 |
| 20080287701 | BISBIPHENYLACYLPHOSPHINE OXIDE AND PREPARATION METHOD THEREFORE - A bisbiphenylacylphosphine oxide of formula (I) and its preparation method are provided. The formula of —Ar— is | 11-20-2008 |
| 20120149932 | PHOSPHORUS-CONTAINING COMPOUNDS USEFUL FOR MAKING HALOGEN-FREE, IGNITION-RESISTANT POLYMERS - Phosphorus-containing compounds useful for flame retardant epoxy resins are disclosed. The flame retardant epoxy resins may be used to make electrical laminates. This invention is particularly useful in end use applications in which a low bromine or low halogen content is required or desired. | 06-14-2012 |
| 20130296597 | PHOSPHORUS-CONTAINING OLIGOMER AND METHOD FOR PRODUCING THE SAME, CURABLE RESIN COMPOSITION AND CURED PRODUCT OF THE SAME, AND PRINTED WIRING BOARD - A phosphorus-containing oligomer is represented by formula (1): | 11-07-2013 |
| 20140357885 | DOPO DERIVATIVE FLAME RETARDANTS - The present invention relates to novel, halogen-free flame retardant derived from 9,10-Dihydro-9-Oxa-10-Phosphaphenantrene-10-oxide (DOPO). This invention also relates to the use of the halogen free DOPO derived flame retardant in polymers. | 12-04-2014 |
| 20150126762 | PROCESS FOR THE PREPARATION OF DOPO-DERIVED COMPOUNDS AND COMPOSITIONS THEREOF - This invention relates to a process for producing compounds derived from 9,10-Dihydro-9-Oxa-10-Phosphaphenantrene-10-oxide (DOPO). In particular, the invention relates to producing DOPO-derived compounds by reacting DOPO with diol compounds in the presence of a catalyst. This invention also relates to DOPO derived composition containing a high melting point diastereomer. The DOPO derived compounds may be useful as flame-retardants. | 05-07-2015 |
| 20150344507 | PHOSPHORUS-CONTAINING COMPOUNDS USEFUL FOR MAKING HALOGEN-FREE, IGNITION-RESISTANT POLYMERS - Phosphorus-containing compounds useful for flame retardant epoxy resins are disclosed. The flame retardant epoxy resins may be used to make electrical laminates. This invention is particularly useful in end use applications in which a low bromine or low halogen content is required or desired. | 12-03-2015 |
| 558077000 | Phosphorus, and two chalcogens bonded directly thereto, in the same ring (e.g., cyclic phosphonates, etc.) | 10 |
| 20130317246 | METHOD FOR THE PURIFICATION OF BIPHEPHOS - The invention relates to a process for the purification of 6,6′-[(3,3′-di-tert-butyl-5,5′-dimethoxy-1,1′-biphenyl-2,2′diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepin), abbreviation: biphephos (see formula 1). | 11-28-2013 |
| 20150073169 | PURIFICATION PROCESS - A process for reducing the level of contaminant metals in ligands used in the preparation of catalysts is disclosed. | 03-12-2015 |
| 558078000 | Acyclic divalent chalcogen single bonded directly to the ring phosphorus (e.g., cyclic phosphites, etc.) | 8 |
| 20130041171 | MACROMOLECULAR ANTIOXIDANTS BASED ON STERICALLY HINDERED PHENOLS AND PHOSPHITES - A sterically hindered phenol and phosphite based compound represented by the following formula: | 02-14-2013 |
| 20130324756 | METHOD FOR THE PREPARATION OF BIPHEPHOS - The invention relates to a process for producing 6,6′-[(3,3′-di-tert-butyl-5,5′-dimethoxy-1,1′-biphenyl-2,2′diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepine), abbreviated to biphephos (see formula 1), with low chlorine content | 12-05-2013 |
| 20140288322 | Preventing Solvent of Crystallization in Production of Polyphosphite Ligands - Residual wash solvent, e.g., ethyl acetate, is removed from polyphosphite, e.g., bisphosphite, crystals by a process comprising the steps of: A. Mixing the polyphosphite crystals and residual wash solvent with a secondary alcohol, e.g., isopropyl alcohol (IPA), to form a mixture of polyphosphite crystals, residual wash solvent and secondary alcohol, and B. Drying the mixture to remove the residual wash solvent and secondary alcohol to a content of less than 0.5 wt % based on the weight of the polyphosphite crystals. | 09-25-2014 |
| 20140350280 | EXTRACTION SOLVENT CONTROL FOR REDUCING STABLE EMULSIONS - Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the diphosphite-containing compounds. | 11-27-2014 |
| 20160159840 | BISPHOSPHITES HAVING AN UNSYMMETRIC OUTER BIPHENOL UNIT - Bisphosphites having at least one unsymmetric outer biphenol unit are useful for the hydroformylation of an olefin. | 06-09-2016 |
| 558079000 | And divalent chalogen double bonded directly to the ring phosphorus (e.g., cyclic phosphates, etc.) | 3 |
| 20110207955 | Process for the production of organic dithiopyrophosphates - Organic dithiopyrophosphates of formula wherein R | 08-25-2011 |
| 20120264965 | PROCESSES FOR PRODUCTION OF CYCLIC ALKYLENE PHOSPHOROHALIDITE AND CYCLIC PHOSPHORIC ACID ESTER - A process for producing a cyclic alkylene phosphorohalidite, which comprises reacting a specific phosphorus trihalide with a specific alkylene glycol compound under conditions where the phosphorus trihalide is present in an excess amount relative to the amount of the alkylene glycol compound in the reaction system to order to obtain the cyclic alkylene phosphorohalidite by reacting the alkylene glycol compound with the phosphorus trihalide; and a process for producing a cyclic phosphoric acid ester by using the obtained cyclic alkylene phosphorohalidite as a raw material. | 10-18-2012 |
| 20140066646 | 1,3,2-Dioxaphosphorinane, 2-Sulfide Derivatives For Use As Anti-Wear Additives In Lubricant Compositions - The present disclosure relates to a non-acidic, sulfur-containing, phosphorus-containing compound of the formula I | 03-06-2014 |
| 558080000 | And nitrogen in the ring | 1 |
| 558081000 | And chalcogen or carbon in the ring | 1 |
| 20110207956 | INTRAMOLECULAR C-H AMINATION WITH PHOSPHORYL AZIDES - A highly effective Co(II)-based system has been developed for catalytic intramolecular C—H amination with phosphoryl azides without the need of terminal oxidant or other additives, resulting in the high-yielding production of cyclophosphoramidates with nitrogen gas as the by-product; additional features of this new catalytic system include the amination of primary C—H bonds and formation of 7-membered ring structures. | 08-25-2011 |
| 558082000 | And carbon and chalcogen in the ring | 10 |
| 20100069657 | METHOD FOR THE PRODUCTION OF DIBENZ[C,E] [1,2]-OXAPHOSPHORIN DERIVATIVES, AMINO-DIBENZ[C,E] [1,2]-OXAPHOSPHORIN AND ALSO USE THEREOF - The invention relates to general syntheses of (6H)-dibenz[c,e] [1,2]-oxaphosphorins which are substituted with nitrogen compounds on the phosphorus atom and comprising commercially available 6H-dibenz[c,e] [1,2]-oxaphosphorin-6-oxides. These nitrogen-containing (6H)-dibenz[c,e] [1,2]-oxaphosphorins can be used as reactive starting substances for further syntheses or as flameproofing agents or as stabilisers. | 03-18-2010 |
| 20100105939 | PHOSPHORUS-CONTAINING COMPOUND AND METHOD FOR PREPARING THE SAME - The present invention provides a phosphorus-containing compound of formula (I): | 04-29-2010 |
| 20110034717 | METHOD FOR SYNTHESIZING 9,10-DIHYDRO-9-OXA-10-PHOSPHAPHENANTHRENE-10-OXIDE AND DERIVATIVES THEREOF - A method for synthesizing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivatives has a step of introducing 6-chloro-6H-dibenz[c,e][1,2]oxaphosphorin or its derivative, an acid compound and water into a reacting chamber to form an organic layer having 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivative and an aqueous layer. Because the acid compound is from an external source and has a catalyzing effect, employing the method can prevent side reaction from occurring and increase yield of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivative. Furthermore, the method is a one-pot operation of hydrolysis, dehydration and cyclization, so the method does not require purification of intermediates. Therefore, the method is time-and cost-saving and requires less organic solvent, resulting in less pollution to the environment. | 02-10-2011 |
| 20140235886 | PHOSPHORUS-BASED (METH)ACRYLATE COMPOUND AND METHOD OF PREPARING THE SAME - This invention relates to a novel compound having high refractive index suitable for use in optical resin materials, etc., without containing a sulfur atom, and to a method of preparing the same, in which the compound is a phosphorus-based (meth)acrylate compound represented by Formula (I). | 08-21-2014 |
| 558083000 | Plural chalcogens in the ring | 6 |
| 20090326256 | ANALGESIC AGENT COMPRISING CYCLIC PHOSPHATIDIC ACID DERIVATIVE - An object of the present invention is to elucidate an analgesic effect as one of new cPA bioactivities and thus to provide a novel analgesic agent. The present invention provides an analgesic agent which comprises a cyclic phosphatidic acid derivative that is one type of phospholipid. | 12-31-2009 |
| 20150045572 | PROCESS FOR THE PREPARATION OF PHOSPHINIC ACID ESTERS - The invention relates to a process for the preparation of alkyl phosphinates, alkenyl phosphinates, alkynyl phosphinates or phenyl phosphinates by reaction of a corresponding phosphine oxide with an alcohol or phenol in the presence of alkali-metal fluoride or tetraalkylammonium fluoride. | 02-12-2015 |
| 558084000 | The ring phosphorus is attached directly to halogen or an acyclic nitrogen by nonionic bonding | 2 |
| 20110201837 | METHOD FOR PRODUCING 6-CHLORODIBENZO[D,F] [1,3,2]DIOXAPHOSPHEPIN - The invention relates to a method for producing 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin (formula 1), comprising the following steps: a) addition of liquid 2,2′-dihydroxybiphenyl into a reactor to an excess of phosphorous trichloride under inert gas and stirring; b) discharge and neutralization of the resulting gases from the reaction mixture; c) separation of the excess phosphorous trichloride; d) obtention of 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin. | 08-18-2011 |
| 20130172596 | PROCESS FOR PREPARING 6-CHLORODIBENZO[D,F][1,3,2]DIOXAPHOSPHEPIN - The present invention relates to a process for preparing 6-chlorodibenzo[d,f][1,3,2]dioxaphosphepin (I) | 07-04-2013 |
| 558085000 | Acyclic divalent chalcogen single bonded directly to the ring phosphorus (e.g., cyclic phosphites, etc.) | 2 |
| 558086000 | And divalent chalcogen double bonded directly to the ring phosphorus (e.g., cyclic phosphates, etc.) | 2 |
| 20130072708 | PHOSPHORIC ACID ESTER PRODUCTION METHOD - The present invention provides a novel production method which enables obtain a phosphorus compound having both an aromatic substituent and a phosphorinane backbone, without using an expensive hydrogen halide scavenger, without going through a complicated post treatment step or a step of recovering a solvent, and with a favorable yield andpurity. In the present invention, step (1) of allowing phosphorus oxytrihalide to react with a phenol compound or naphthol compound at a molar ratio of 1.1-3.0:1 in the presence of metal halide, and removing unreacted phosphorus oxytrihalide, to produce a mono-substituted phosphorodihalidate; and step (2) of allowing the mono-substituted phosphorodihalidate obtained in the step (1) to react with a diol compound, at a 0.90 to 0.99 molar equivalent based on 1 mole of the halogen atom in the mono-substituted phosphorodihalidate so as to perform a dehydrohalogenation reaction, to obtain a phosphorus compound represented by Formula (V). | 03-21-2013 |
| 20160152551 | PROCESS FOR THE PREPARATION OF CLOMIPHENE | 06-02-2016 |
