专利号:US-5847116-A 优先权日:1994-12-09 标 题 :Process for the preparation of intermediates useful in the synthesis of cephalosporins 发明人:WALKER DEREK; LEE JUNNING; MARTIN CHARLES R; ZHANG HAIYAN; SOGLI LORIS; BERNASCONI ERMANNO; MENON VINOD PARAKKAL 权利人:SCHERING CORP; ANTIBIOTICOS SA 摘要:A process is described for preparing 3-exomethylene cephalosporanic acid derivatives for use in the synthesis of cephalosporin antibiotics such as ceftibuten. The process comprises electrochemical reduction of a compound of the formula (IV) ##STR1## wherein: R 3 is ##STR2## is an optional sulfoxide group; n is 2 or 3; R 1 is H and R is H or NHR 2 , where R 2 is H or a protecting group selected from C 6 H 5 CH 2 OC(O)--, C 6 H 5 C(O)-- or C 1 -C 6 alkoxy-C(O)--; or wherein R and R 1 together with the carbon atom to which they are attached comprise --C(O)--, and produces the desired 3-exomethylene compounds with low levels of the corresponding 3-methyl tautomers.
专利号:US-8287715-B2 优先权日:2009-05-19 标题:Synthesis of boron using molten salt electrolysis 发明人:TAYLOR PATRICK R; GOMEZ JUDITH C 权利人:TAYLOR PATRICK R; GOMEZ JUDITH C; COLORADO SCHOOL OF MINES 摘要:The invention relates generally to elemental boron, particularly to elemental boron having a high purity level and to a method of recovering elemental boron by the electrolysis of a molten boron-containing electrolyte.
专利号:US-2012231327-A1 优先权日:2010-03-10 标题:Positive electrode active material for non-aqueous electrolyte secondary battery, process for production of same, and non-aqueous electrolyte secondary battery produced using same 发明人:HIRATSUKA HIDEKAZU 权利人:HIRATSUKA HIDEKAZU; PANASONIC CORP 摘要:At the time of synthesis of lithium nickelate, by adding a firing aid to material to be fired, crystal growth is promoted at a temperature that is lower than a firing temperature necessary for obtaining desired crystal growth of lithium nickelate, and substitution of elements that contribute to structural stability in crystals is promoted. Furthermore, distortion of crystal or loss of oxygen at the time of synthesis is suppressed. Thus, a lithium ion secondary battery having excellent charge and discharge characteristics and cycling characteristics can be provided.
专利号:US-10287302-B2 优先权日:2017-06-12 标题 :Method for synthesis of lithium fluorinated borate salts 发明人:YANG JIN; EITOUNI HANY BASAM 权利人:SEEO INC 摘要:An effective method to synthesize Li borate salt such as Li(RfO)aBFb, in which a and b are integers, and a+b=4, has been disclosed. Using RfO-TMS as the starting material enables a streamlined synthesis scheme and makes purification of the final product simple.
专利号:US-7208604-B2 优先权日:1999-12-06 标题 :Methods for the synthesis of alfentanil, sufentanil, and remifentanil 发明人:MATHEW JACOB; KILLGORE J KENDALL 权利人:MALLINCKRODT INC 摘要:Synthetic pathways are disclosed for synthesizing derivatives or analogs of fentanyl. Specifically set out are pathways for synthesizing alfentanil, sufentanil and remifentanil. The disclosed methods require fewer steps and produce a greater yield of product than methods reported in the prior art.
专利号:WO-2025124974-A1 优先权日:2023-12-11 标题:Synthesis of fumed nanostructured lithium borate powder 发明人:TAKATA Ryo; SCHMIDT FRANZ; SCHÄFER DURDU; WIEGAND ARMIN; HEINDL NICO; KANEEDA MASANOBU; ESKEN DANIEL; HERZOG MARCEL; KANNO RYOJI; NOMOTO KUNIHARU 权利人:EVONIK OPERATIONS GMBH 摘要:A method for making fumed lithium borate, the method comprising: preparing a solution of a lithium precursor, preferably a lithium carboxylate containing 5 to 20 carbon atoms, and a boron source, preferably an organic boron compound, feeding the solution to a flame burning in a flame reaction zone to produce a fumed product comprising fumed lithium borate particles; and obtaining the fumed product.
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合成参考文献
参考文献:10.1007/s00248-014-0432-3 摘要:Kelly LC, Cockell CS, Thorsteinsson T, Marteinsson V, Stevenson J. Pioneer microbial communities of the Fimmvörðuháls lava flow, Eyjafjallajökull, Iceland. Microb Ecol. 2014 Oct;68(3):504–18. doi: 10.1007/s00248-014-0432-3.