专利号:WO-2024110994-A1 优先权日:2022-11-25 标题 :A process for the preparation of ledipasvir 发明人:GANGARAJULA SUDHAKAR; CHENNAM RAMU; KUMARAGURU THENKRISHNAN; BABURAO RODE HARIDAS; MADDI REDDY SRIDHAR; CHADA REDDY RAJI; GHOSH SUBHASH 权利人:COUNCIL OF SCIENT AND INDUSTRIAL RESEARCH AN INDIAN REGISTERED BODY INCORPORATED UNDER THE REGN OF S 摘要:The present disclosure relates to process for the preparation of Ledipasvir (I) or of its pharmaceutically acceptable salts. The present disclosure also provides novel intermediates (IV–XI) that are used in the synthesis of Ledipasvir. The main strategies of the present invention are late-stage functionalization such as difluorination and cyclopropanation of the key intermediates of Ledipasvir (I). (Formula (I))
专利号:US-8652431-B2 优先权日:2009-11-10 标 题 :Metal fluorophosphate synthesis and use as an active material for a battery electrode 发明人:PATOUX SEBASTIEN; BOURBON CAROLE; DUMONT-BOTTO ERWAN; DOLLE MICKAEL; ROZIER PATRICK 权利人:PATOUX SEBASTIEN; BOURBON CAROLE; DUMONT-BOTTO ERWAN; DOLLE MICKAEL; ROZIER PATRICK; COMMISSARIAT ENERGIE ATOMIQUE; CT NATIONALE DE RECH SCIENT 摘要:A method of synthesis of a metal fluorophosphate having the following general formula (1): X a M b (PO 4 ) c F d (1), in which: X is an alkaline metal selected among sodium (Na) and lithium (Li) or a mixture of said metals; M is a transition metal selected among the following elements: Co, Ni, Fe, Mn, V, Cu, Ti, Al, Cr, Mo, Nb or a combination of at least two of said metals, 0≦a≦5; 0.5≦b≦3; 0.5≦c≦3; and d is an integer equal to 1, 2 or 3. The method contains an electric-field-activated sintering process for a mixture (1) formed by at least one first phosphate-containing solid precursor and at least one second fluorine-containing solid precursor.
专利号:US-6225511-B1 优先权日:1990-10-26 标题 :Synthesis of fluorinated ethers 发明人:CHAMBERS OWEN ROSS; SIMPSON RODERIC NIGEL FRASER 权利人:RHONE POULENC CHEMICALS 摘要:Fluorinated ethers of the formula:wherein R is hydrogen, fluorine, alkyl of 1 to 6 carbon atoms, or fluoroalkyl of 1 to 6 carbon atoms, R' is hydrogen, alkyl of 1 to 6 carbon atoms, or fluoroalkyl of 1 to 6 carbon atoms, and R'' is fluorine, alkyl of 1 to 6 carbon atoms or fluoroalkyl of 1 to 6 carbon atoms are prepared by fluorinating a corresponding ether of formula:with a solid transition metal fluoride fluorinating agent such as cobaltic fluoride.
专利号:US-2011091370-A1 优先权日:2009-10-15 标 题 :Mechanochemical Synthesis of Carbon Fluorides and an Electrochemical Cell using the Synthesized Carbon Fluorides 发明人:BEHL WISHVENDER K; READ JEFFREY A 权利人:US GOV SEC ARMY 摘要:Carbon fluoride is synthesized by reactively or high intensity/energy milling at ambient room temperature carbon-containing material (such as graphite, carbon black, coke, or other carbon-based material) with an inorganic fluoride agent (such as cobalt trifluoride) other than fluorine gas. The following chemical reaction occurs: xC+CoF 3 →C x F+CoF 2 , wherein x equals 1 to 4. The C x F is separated from the CoF 2 and the CoF 3 by digesting the C x F, CoF 2 and the CoF 3 in hot water of at least approximately 90° C. causing the CoF 2 to dissolve; and then filtering the CoF 2 . The CoF 3 is unreacted and undergoes hydrolysis in the hot water to form Co(OH) 3 or Co 2 O 3 .3H 2 O, which is removed by washing with sulfuric acid. Alternatively, the C x F is separated from the CoF 2 and the CoF 3 by digesting the C x F, CoF 2 and the CoF 3 in heated sulfuric acid followed by filtration and washing with sulfuric acid and then with hot water. The synthesized carbon fluoride is used to form a cathode in electrochemical cells, such as lithium batteries.
专利号:US-6657068-B2 优先权日:2002-03-22 标题:Liquid phase oxidation of halogenated ortho-xylenes 发明人:COLBORN ROBERT EDGAR; HALL DAVID BRUCE; KOCH PETER; OECKEL GERALD 权利人:GEN ELECTRIC 摘要:A method for the manufacture of halophthalic acid by liquid phase oxidation of halo-ortho-xylene is disclosed. The halophthalic acid may be dehydrated to form halophthalic anhydride which is useful in the synthesis of polyetherimide.
专利号:US-6649773-B2 优先权日:2002-03-22 标题:Method for the manufacture of halophthalic acids and anhydrides 发明人:COLBORN ROBERT EDGAR; HALL DAVID BRUCE; KOCH PETER; OECKEL GERALD 权利人:GEN ELECTRIC 摘要:A method for the manufacture of halophthalic acid by liquid phase oxidation of halo-ortho-xylene is disclosed. The halophthalic acid may be dehydrated to form halophthalic anhydride which is useful in the synthesis of polyetherimide.
摘要:Food and Chemical Toxicology., 20(311), 1982 [] 摘要:American Conference of Governmental Industrial Hygienists. Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices. ACGIH, Cincinnati, OH 2014, p. 32 摘要:Jones, L.M., et al. Veterinary Pharmacology & Therapeutics. 4th ed. Ames: Iowa State University Press, 1977., p. 1275 摘要:WHO; Cobalt and Inorganic Cobalt Compounds. Concise International Chemical Assessment Document 69. World Health Organization, Geneva, Switzerland (2006). Available from, as of Feb 7, 2017: 摘要:American Custom Chemicals Corp; Product Search Cobalt Fluoride, Hydrous. Available from, as of Jan 6, 2017: https://www.acccorporation.com/products/ING0008688