异戊醇,丁酸置于candida Antarctica Lipase B体系中,化学反应 4.0H,以99.9%的收率获得丁酸异戊酯 参考文献:A Clean Enzymatic Process For Producing Flavour Esters By Direct Esterification In Switchable Ionic Liquid/solid Phases 标题:A Clean Enzymatic Process For Producing Flavour Esters By Direct Esterification In Switchable Ionic Liquid/solid Phases 摘要:开发了一种清洁的生物催化方法,利用可切换的离子液体/固体相作为反应/分离介质来生产香味酯.研究了不同离子液体与香味乙酰酯(香叶醇乙酸酯,香茅醇乙酸酯,奈缬醇乙酸酯和异戊醇乙酸酯)混合物的相行为,在多个浓度下进行研究,结果发现所有情况下在50oc时均为完全均匀的液态介质,而在室温下则为固态系统.通过在控制温度下对固体离子液体/香味酯混合物采用迭代离心分离协议,可以轻松分离出固态离子液体相和液态香味酯相.已证明,在n,N',N'',N'''-十六烷基三甲基铵双(全氟甲基磺酰)亚胺([c16Tma][ntf2])离子液体中,固定化的南极酵母脂肪酶b(novozym 435)催化剂在脂肪族羧酸(醋酸,丙酸,丁酸或戊酸)与香味醇(异戊醇,香叶醇,香茅醇或香茅醇)之间的酯化反应中极为适合,在适当的反应条件(酶量,脱水分子筛等)下,产率提高至100%.通过这种方法在[c16Tma][ntf2]中合成了十六种不同的香味酯,离子液体分离后产品浓度达到0.757 G Ml−1.在七个连续操作周期中,酶/离子液体系统的残余活性在重复使用后几乎没有变化. Doi:10.1039/c2Gc36081K
专利信息
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-8754259-B2 优先权日:2008-08-15 标 题 :Synthesis of cyclohexane derivatives useful as sensates in consumer products 发明人:YELM KENNETH EDWARD; BUNKE GREGORY MARK; HAUGHT JOHN CHRISTIAN 权利人:PROCTER & GAMBLE; PROCTER & GAMBLE 摘要:The present invention provides synthetic routes for preparing various isomers of cyclohexane-based coolants, such as menthyl esters and menthanecarboxamide derivatives, in particular those substituted at the amide nitrogen, for example with an aromatic ring or aryl moiety. Such structures have high cooling potency and long lasting sensory effect, which make them useful in a wide variety of consumer products. One synthetic route involves a copper catalyzed coupling of a primary menthanecarboxamide with an aryl halide, such reaction working best in the presence of potassium phosphate and water. Using this synthetic route, specific isomers can be prepared including the menthanecarboxamide isomer having the same configuration as l-menthol and new isomers such as a neoisomer having opposite stereochemistry at the carboxamide (C-1) position. The neoisomer unexpectedly has potent and long lasting cooling effect. Preparation schemes for neoisomers of other menthyl derivatives which are useful as coolants, including esters, ethers, carboxy esters and other N-substituted carboxamides are also provided.
专利号:US-6835841-B2 优先权日:2002-09-13 标 题:Asymmetric catalytic hydrogenation process for preparation of chiral cyclic β-aminoesters 发明人:DEERBERG JOERG; MCLEOD DOUGLAS D; YUE TAI-YUEN 权利人:BRISTOL MYERS SQUIBB CO 摘要:A novel process for the asymmetric synthesis of substituted cyclic beta-amino-carboxylates of the type shown in the specification from appropriate beta-enamino-ester starting materials is described. These compounds are useful as intermediates for MMP and TACE inhibitors.
专利号:US-7309799-B2 优先权日:2004-06-01 标 题:Methods for the synthesis of milnacipran and congeners thereof 发明人:BUCHWALD STEPHEN L; SWAGER TIMOTHY M; RARIY ROMAN V 权利人:COLLEGIUM PHARMACEUTICAL INC 摘要:One aspect of the present invention relates to methods for synthesizing milnacipran or congeners thereof. Another aspect of the present invention relates to asymmetric methods for synthesizing enantiomerically enriched milnacipran or congeners thereof. The present invention also relates to methods for synthesizing intermediates useful in the non-asymmetric or asymmetric methods for synthesizing enantiomerically enriched milnacipran or congeners thereof.
专利号:US-2003072716-A1 优先权日:2001-06-22 标 题:Renewable, carbohydrate based CO2-philes 发明人:POOVATHINTHODIYIL RAVEENDRAN; WALLEN SCOTT L 摘要:A composition is disclosed comprising a carbohydrate-based material a dispersed in carbon dioxide. A general method for synthesizing inexpensive, renewable, non-toxic, non-fluorous, carbohydrate based CO 2 -philes is disclosed. These CO 2 -philes are soluble in carbon dioxide. Methods of making the composition are also disclosed. The methods and composition are useful in a variety of applications and can utilize gaseous, liquid and supercritical carbon dioxide. The methods and compositions are useful in the synthesis of surfactants and metal chelates for CO 2 , as a sizing substrate, in CO 2 -based coating processes, for impregnation and plasticizing cellulosic and non-cellulosic materials, in pharmaceutical applications, such as crystallization, dispersion and encapsulation of bioactive molecules in solid systems, in the densification of CO 2 , in the synthesis of biodegradable polymers in CO 2 , and for carbon dioxide removal, to name just a few.
专利号:US-3644446-A 优先权日:1969-07-01 标 题 :Preparation of rhodium and iridium hydride carbonyl complexes 发明人:BOOTH FRANK B; FENTON DONALD M; OLIVIER KENNETH L 权利人:UNION OIL CO 摘要:HYDRIDE CARBONYL COMPLEXES OF RHODIUM AND IRIDIUM WITH BIPHYLIC LIGANDS ARE PREPARED BY TREATMENT OF RHODIUM OR IRIDIUM, COMPLEXES OR SALTS THEREOF WITH AN ALKALI METAL HYDROXIDE, ALKOXIDE OR ARYLOXIDE AND A BIPHYLLIC LIGAND AND A MIDL REDUCING AGENT. IN A TYPICAL SYNTHESIS A RHODIUM CARBONYL SALT IS CONTACTED WITH AN ALKALI METAL ALKOXIDE IN THE PRESENCE OF THE LIGAND AND THE HYDRIDE IS FORMED BY SUBSEQUENT OR SIMULTANEOUS CONTACTING WITH A REDUCING AGENT SUCH AS HYDROGEN, CARBON MONOXIDE OR AN OXIDIZABLE ALCOHOL. THE COMPOUNDS HAVE UTILITY AS HYDROFORMYLATION CATALYSTS.
参考文献:10.1007/s11306-018-1357-5 摘要:Lawal O, Knobel H, Weda H, Nijsen TME, Goodacre R, Fowler SJ, the BreathDx consortium. TD/GC–MS analysis of volatile markers emitted from mono- and co-cultures of Enterobacter cloacae and Pseudomonas aeruginosa in artificial sputum. Metabolomics. 2018 Apr 26;14(5):66. doi: 10.1007/s11306-018-1357-5. 参考文献:10.1186/s12870-019-1855-2 摘要:Li T, Wu Q, Zhu H, Zhou Y, Jiang Y, Gao H, Yun Z. Comparative transcriptomic and metabolic analysis reveals the effect of melatonin on delaying anthracnose incidence upon postharvest banana fruit peel. BMC Plant Biology. 2019 Jul 01;19(1):289. doi: 10.1186/s12870-019-1855-2. 参考文献:10.3390/molecules27051726 摘要:Chávez-Márquez A, Gardea AA, González-Rios H, Vazquez-Moreno L. Characterization of Cabernet Sauvignon Wines by Untargeted HS-SPME GC-QTOF-MS. Molecules. 2022 Mar 07;27(5):1726. doi: 10.3390/molecules27051726.