专利号:US-2023002312-A1 优先权日:2019-11-20 标题:A continuous flow process for the synthesis of hydroxamic acid 发明人:PIMPALE MILIND JAGANNATH; KINI PRASHANT VASANT 权利人:UPL LTD 摘要:The present invention relates to a process for the synthesis of hydroxamic acids by continuous flow process wherein said process comprising reacting alkyl ester with hydroxyl amine salt in presence of base in a microreactor system and continuously producing hydroxamic acid.
专利号:US-8653238-B2 优先权日:2006-02-27 标题:Compositions and methods for transport of molecules with enhanced release properties across biological barriers 发明人:WENDER PAUL A; GOUN ELENA A; JONES LISA R 权利人:WENDER PAUL A; GOUN ELENA A; JONES LISA R; UNIV LELAND STANFORD JUNIOR 摘要:Conjugates of a cargo molecule with a transporter molecule are disclosed, where the cargo molecule and the transporter molecule are linked covalently by a releasable linker. The cargo of the conjugate can be a biologically active agent or a reporter molecule. The transporter modulates the transport of the cargo across a biological barrier (e.g., a cell membrane) compared to the transport of the unconjugated cargo. Releasable linkers suitable for rapid and facile conjugation to various types of cargo and transporters are also disclosed, along with methods for using the linkers in the synthesis of conjugates.
专利号:US-2005209355-A1 优先权日:2004-03-22 标 题:[Novel Reactions and the Products of Such Reactions] 发明人:ROITMAN LIPA L 权利人:ROITMAN LIPA L 摘要:A process for the synthesis of novel compounds is described comprising reacting tetrachloroethylene with substances containing active methylene group in the presence of free radical initiators. Also, a process for grafting tetrachloroethylene is described comprising reacting these compounds with polymers containing active methylene group in the presence of free radical initiators. Furthermore, a method of conducting such reactions to high conversion is described, comprising conducting the reactions in the reflux condensate. The present invention provides a novel and high yield route for heretofore unobtainable materials.
专利号:US-5210222-A 优先权日:1991-01-21 标题 :Process for the production of malonic acid anhydride 发明人:O'MURCHU COLM 权利人:LONZA AG 摘要:A process, which is harmless with respect to safety, for the production of malonic acid anhydride. For this purpose, diketene is ozonized in the presence of a suitable carbonyl compound. Malonic acid anhydride is a highly reactive intermediate product for the synthesis of numerous active ingredients for, e.g., pharmaceutical agents, pesticides or dyes.
专利号:US-6531625-B2 优先权日:2000-09-08 标题 :Cinnamic esters 发明人:KUHN WALTER; BRAUN GERHARD; KLEIN STEPHAN 权利人:HAARMANN & REIMBER GMBH 摘要:In a novel process for the synthesis of cinnamic esters or substituted cinnamic esters, carboxylic esters are reacted, by condensation, with benzaldehyde or substituted benzaldehydes, respectively, in the presence of a solid with basic properties.
专利号:US-4818796-A 优先权日:1987-05-13 标 题:Polymers prepared by polymerizing alpha, beta-ethylenically unsaturated acids and epoxy compounds 发明人:DAS SURYYA K; PORTER JR SAMUEL; TYGER WAYNE H 权利人:PPG INDUSTRIES INC 摘要:Hydroxyl-containing polymers prepared by reaction of a polymerizable alpha, beta-ethylenically unsaturated carboxylic acid and an epoxy compound containing greater than 5 carbon atoms are disclosed. The polymer is prepared by free radical organic solution polymerization techniques. Synthesis of the polymers by this technique assures multiple hydroxyl functionality in all polymer chains thereby providing good cure response. The polymers are useful as binders in high solids coating compositions. When used with appropriate curing agents, the resultant coatings have good hardness, high gloss and distinctness of image, have good solvent and humidity resistance and are very resistant to acid etching. n Preferred reactants are: n (a) an alpha, beta ethylenically unsaturated carboxylic acid and n (b) a glycidyl ester of the formula ##STR1## where R=a tertiary aliphatic hydrocarbon group of 4 to 26 carbon atoms.
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