CAS: 7803-60-3; Hypophosphoric Acid

📜Lead(II) Hypophosphate置于硫化氢体系中,用 水 作为反应溶剂,化学反应生成 连二磷酸
参考文献:Cavalier,J.; Cornec,E.,Bulletin De La Societe Chimique De France,1909,Vol. 5,P. 1058-1060
标题:Cavalier,J.; Cornec,E.,Bulletin De La Societe Chimique De France,1909,Vol. 5,P. 1058-1060

专利信息

专利号:US-RE34589-E
优先权日:1989-11-17
标题 :Aqueous synthesis of 2-halo-4,6-dinitroresorcinol and 4,6-diaminoresorcinol
发明人：YIN TYZE-KUAN T
权利人:DOW CHEMICAL CO
摘要:The displacement of halogen from a 1,2,3-trihalo-4,6-dinitroresorcinol can be carried out in an aqueous medium using alkali metal hydroxide to form 2-halo-4,6-dinitroresorcinol. The product is a useful intermediate in the synthesis of 4,6-diaminoresorcinol, which is a monomer for polybenzoxazole polymers. The process from part of a useful aqueous process for synthesizing 4,6-diaminoresorcinol.

专利号:US-10913747-B2
优先权日:2017-07-04
标题 :Efficient process for the preparation of sitagliptin through a very effective preparation of the intermediate 2,4,5-trifluorophenylacetic acid
发明人：DE LUCCHI OTTORINO; PADOVAN PIERLUIGI; BRASOLA ELENA
权利人:FIS FABBRICA ITALIANA SINTETICI SPA; F I S —FABBRICA ITALIANA SINTETICI S P A
摘要:Object of the present invention is an efficient process for the preparation of the active pharmaceutical ingredient Sitagliptine and the 2,4,5-trifluorophenylacetic acid (TFAA) and salt thereof, which is a key intermediate for the synthesis of Sitagliptine.

专利号:US-2007287877-A1
优先权日:2006-06-12
标题 :Method for synthesis of reversion resistant chromium bearing wastes and materials
发明人：FORRESTER KEITH EDWARD
权利人:FORRESTER KEITH EDWARD
摘要:This invention provides a method for stabilization of hexavalent chromium and trivalent chromium bearing wastes, materials, and contaminated soils subject to acid and water leaching tests or leach conditions by addition of water solution, hexavalent chromium reducing agent, precipitating and pH increase agent, and chromium reversion control and stabilizing agents such that leaching of chromium is inhibited to desired levels and resists reversion to hexavalent chromium form over time. The resultant material, contaminated soil and/or waste after stabilization and reversion control is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

专利号:US-11492259-B2
优先权日:2017-06-26
标题:Method for manufacturing metal phosphate nanoparticles by sub-and supercritical solvothermal synthesis and nanoparticles obtained by this method
发明人：AYMONIER CYRIL; BRUMMERSTEDT IVERSEN BO; PHILIPPOT GILLES; LAU NYBORG BROGE NILS
权利人:CENTRE NAT RECH SCIENT; UNIV BORDEAUX; UNIV OF AARHUS
摘要:A method for manufacturing metal phosphate hydrate nanoparticles wherein metal reactants are selected from metal precursors of transition metals,phosphate precursors are selected from: Trisodium phosphate Na3PO4, disodium phosphate Na2HPO4, phosphoric acid H3PO4 and hypophosphoric acid H4P2O6, wherein said method comprises the following step of a reaction medium comprising at least a metal reactant, a phosphate precursor and a solvent, is submitted to a solvothermal treatment at a pressure superior to 50 MPa, and at a temperature of from 100 to 350° C.

专利号:US-2025313471-A1
优先权日:2024-03-29
标题 :Mechanochemical reduction of phosphates as a sustainable route to phosphite salts and organophosphite compounds
发明人：LOEWE PAWEL; CUMMINS CHRISTOPHER C; TAAKILI RACHID; XIN (DECEASED) TIANSI
权利人:MASSACHUSETTS INST TECHNOLOGY
摘要:Disclosed herein, among other things, are methods for the mechanochemical synthesis of phosphite salts and organophosphite compounds from phosphates, such as condensed phosphates.

专利号:US-4407765-A
优先权日:1980-07-02
标题:Synthesis of organic phosphate-phosphonates
发明人：HARDY THOMAS A
权利人:STAUFFER CHEMICAL CO
摘要:A process for the preparation of organic phosphate-phosphonates comprises the steps of reacting an organic acylating agent with an organophosphite triester to form an intermediate followed by reacting the intermediate with an organophosphite diester. n Typically benzoyl chloride is the acylating agent, triethyl phosphite and bis (β-chloroethyl) phosphite the sequential reactants, and the second step is carried out in the presence of a catalytic amount of a tertiary amine. A solvent such as methylene dichloride may be employed. n Organic phosphate-phosphonates are useful as flame retardants, especially in urethane foams.