专利号:US-4800234-A 优先权日:1986-12-22 标 题 :Synthesis of 1,1,2,2-tetrahydroperfluoroalkanols and their esters 发明人:LANTZ ANDRE; MICHAUD PASCAL 权利人:ATOCHEM 摘要:The invention relates to the preparation of 1,1,2,2-tetrahydroperfluoroalkanols and their esters. n A 2-(perfluoroalkyl)ethyl iodide is oxidized using peroxomonosulphuric acid or peroxodisulphuric acid in a carboxylic acid or carboxylic acid ester.
专利号:US-2003232978-A1 优先权日:2001-08-24 标 题 :Reagents that facilitate the purification of compounds synthesized on a solid support 发明人:SEEBERGER PETER H; HEWITT MICHAEL C; PALMACCI EMMA R; PLANTE OBDIAH J 摘要:Disclosed is a novel capping-and-tagging (“cap-tagâ€?) strategy that aids in the purification of compounds assembled by multi-step synthetic methods. The incorporation of a unique cap-tag into undesired intermediates during a multi-step synthesis allows for the straightforward removal of these undesired compounds at the conclusion of the synthetic protocol by several methods based on affinity chromatography and scavenging resins. Importantly, this invention may be exploited in any automated synthetic protocol. In preferred embodiments, the cap-tag system is exploited for the purification of carbohydrates prepared via automated solid-phase methods.
专利号:US-5650393-A 优先权日:1992-08-06 标 题 :Amphiphilic compounds derived from amino acids or peptides, their methods of synthesis and their application as drug delivery systems 发明人:PAVIA ANDRE A; PUCCI BERNARD; RIESS JEAN G; ZARIF LEILA; GUEDJ CAMILLE 权利人:ALLIANCE PHARMA 摘要:Amphiphilic derivatives of amino acids or peptides are provided, comprising a polyhydroxylated hydrophilic part derived from a sugar, from a polyol, from an aminopolyol or from an oligosaccharide, and at least one hydrophobic part derived from a hydrocarbon, fluorocarbon, or a mixed fluorocarbon/hydrocarbon, saturated or unsaturated, having from 5 to 20 carbon atoms, the hydrophobic part(s) being linked to the hydrophilic part by a junction bearing an amino acid or a peptide.
专利号:US-6933394-B2 优先权日:2002-03-06 标 题 :Catalyst for synthesizing alkylene carbonate 发明人:SAKAKURA TOSHIYASU; YASUDA HIROYUKI 权利人:NAT INST OF ADVANCED IND SCIEN 摘要:The present invention provides an alkylene-carbonate synthesis catalyst comprising a compound insoluble to one phase containing alkylene carbonate produced when the alkylene oxide and carbon dioxide are reacted with the catalyst and soluble to the other phase substantially free of alkylene carbonate. The catalyst allows alkylene carbonate to be produced with high yield and selectivity and be readily collected. The catalyst also facilitates repeated or continuous reaction process in a cost-effective manner. The present invention also provides an apparatus for producing alkylene carbonate using the catalyst.
专利号:US-5463082-A 优先权日:1993-07-08 标 题:Fluorous multiphase systems 发明人:HORVATH ISTVAN T; RABAI JOZSEF 权利人:EXXON RESEARCH ENGINEERING CO 摘要:Stoichiometric and catalytic chemical transformations may be carried out in solution using novel fluorous multiphase systems (FMS). The term 'fluorous' is defined as a carbon-fluorine bond rich organic molecule. The FMS consists of a fluorous phase containing a fluorous solvent, typically a fluorocarbon or a fluorohydrocarbon and a reagent or a catalyst containing a sufficient number of fluorous moieties to render it preferentially soluble in the fluorous solvent without impairing the ability of the catalyst or reagent to be effective in the reaction and while maintaining the reaction in a liquid or fluid phase. The nonfluorous solvent may be any suitable organic or nonorganic solvent(s) with limited or no solubility in the fluorous solvent that is effective for dissolving the reactant(s) and most desirably, for separating the resulting product(s). Typically, such solvents have a Hildebrand solubility parameter of at least about 18.0 MPa1/2. Appropriate fluorous moieties are linear, branched and carbocyclic fluorocarbon alkyl chains with high carbon numbers. FMS reagents and catalysts can be prepared by (1) fluorination (i.e., replacement of C--H bonds with fluorine); (2) fluorofunctionalization, e.g., the attachment of fluorous moieties to the reagents or catalysts; or (3) by total synthesis. The invention is useful in separations technology and in catalyst design and synthesis.
专利号:US-2006128957-A1 优先权日:2002-07-11 标题:Fluorous tagging and scavenging reactants and methods of synthesis and use thereof