烯丙醇置于cerium(Iii) Nitrate Hexahydrate,双氧水,Lithium Bromide体系中,用 水 作为反应溶剂,化学反应 10.0H,以99%的收率获得产物2,3-二溴-1-丙醇 参考文献:Bromination Of Alkenols With The H2O2-libr-ceiii And H2O2-libr-ceiv Systems 标题:Bromination Of Alkenols With The H2O2-libr-ceiii And H2O2-libr-ceiv Systems 摘要:烯醇与 H2O2-Libr-Ce(No3)3-6H2O 或 H2O2-Libr-Ce(Nh4)2(No3)6 体系的反应导致双键溴化,反应生成邻位二溴烷醇.反应进行的选择性很高,羟基实际上没有发生氧化. DOI:10.1007/s11172-012-0064-Z
专利号:US-4111933-A 优先权日:1976-04-30 标题:Protection of functional groups during reaction and their subsequent restoration 发明人:ECKERT HEINER; UGI IVAR; KABBE HANS-JOACHIM 权利人:BAYER AG 摘要:In the process for preparing an organic compound of the formula n n A' -- X n n in which n X is an amino group, a hydroxyl group or a carboxyl group, and n A' is the remainder of the molecule, from an organic compound of the formula n n A -- X n n in which n A is the remainder of the molecule which can undergo reaction to form A', by converting A -- X into a compound of the formula n n A -- Z -- COOR n n in which n Z is --NH--, --O-- or a direct C--C bond, and n R is a radical of the formula ##STR1## IN WHICH Y is a direct C--C single bond, the --CHâ•?CH-- group or an arylene group, n R 1 to R 4 each independently is hydrogen, halogen or an alkyl, aryl, aralkyl, alkoxycarbonyl, alkylaminocarbonyl, arylaminocarbonyl or cycloalkylaminocarbonyl radical, or n R 1 + r 2 and R 3 + R 4 each independently completes a 5- or 6-membered carbocyclic ring, or n R 1 and R 3 conjointly with the grouping --C--Y--C-- forms a carbocyclic ring with 5 or 6 carbon atoms, and Hal is halogen, n Thereby to protect X, then converting A -- Z -- COOR into a compound of the formula n n A' -- Z -- COOR n n and then treating the compound A' -- Z -- COOR to restore the group X, the improvement which comprises effecting the treatment of the compound A' -- Z -- COOR with an alkali metal compound of a complex of monovalent cobalt. The process is applicable particularly to aminocarboxylic acids including intermediates from various stages of the synthesis of penicillins and cephalosporis.
专利号:US-8957260-B2 优先权日:2011-02-07 标题 :Process for the oxidation of mesitol 发明人:WEYRAUCH JAN PHILIPP; WEIS MARTINE; TELES JOAQUIM HENRIQUE; EBEL KLAUS; DEGLMANN PETER 权利人:WEIS MARTINE; TELES JOAQUIM HENRIQUE; EBEL KLAUS; DEGLMANN PETER; WEYRAUCH VIVIEN ELLINOR; WEYRAUCH GUNHILD; BASF SE 摘要:The invention relates to a process for the oxidation of mesitol with singlet oxygen, which is released from hydrogen peroxide, this release taking place in the presence of a bismuth compound as catalyst. In the process, 2,4,6-trimethylquinol is formed in high yield and selectivity as product, which can be used in further reactions for the synthesis of vitamins and in particular of vitamin A and vitamin E.
专利号:US-5637757-A 优先权日:1995-04-11 标 题 :One-pot synthesis of ring-brominated benzoate compounds 发明人:HILL JOHN E; FAVSTRITSKY NICOLAI A; MAMUZIC RASTKO I; BHATTACHARYA BHABATOSH 权利人:GREAT LAKES CHEMICAL CORP 摘要:A method of preparing tetrabromobenzoate compounds from tetrabromophthalic anhydride by reacting tetrabromophthalic anhydride with alcohol in the presence of a decarboxylation catalyst. The reaction may be carried out in an excess of alcohol, or with a near stoichiometric amount of alcohol by performing the reaction in an inert solvent.
专利号:US-2009111737-A1 优先权日:1999-05-24 标题:Novel antibacterial agents 发明人:CHRISTENSEN BURTON G; MORAN EDMUND J; GRIFFIN JOHN H; JUDICE J KEVIN; MU YONGQI; PACE JOHN L; MAMMEN MATHAI; AGGEN JAMES 权利人:CHRISTENSEN BURTON G; MORAN EDMUND J; GRIFFIN JOHN H; JUDICE J KEVIN; MU YONGQI; PACE JOHN L; MAMMEN MATHAI; AGGEN JAMES 摘要:This invention relates to novel multibinding compounds (agents) that are antibacterial agents. The multibinding compounds of the invention comprise from 2-10 ligands covalently connected by a linker or linkers, wherein each of said ligands in their monovalent (i.e., unlinked) state have the ability to bind to a an enzyme involved in cell wall biosynthesis and metabolism, a precursor used in the synthesis of the bacterial cell wall and/or the bacterial cell surface thereby interfere with the synthesis and/or metabolism of the cell wall. In particular the multibinding compounds of the invention comprise from 2-10 ligands covalently connected by a linker or linkers, wherein each of said ligands hasn a ligand domain capable of binding to penicillin binding proteins, a transpeptidase enzyme, a substrate of a transpeptidase enzyme, a beta-lactamase enzyme, pencillinase enzyme, cephalosporinase enzyme, a transglycoslase enzyme, or a transglycosylase enzyme substrate; Preferably, the ligands are selected from the beta lactam or glycopeptide class of antibacterial agents.
专利号:US-3957927-A 优先权日:1973-07-03 标题:Manufacture of phosphorus nitride esters 发明人:WURMB ROLF; WERNER DIETMAR; WUNSCH GERD; KIENER VOLKER; SCHWARZ WOLFGANG 权利人:BASF AG 摘要:Cyclic phosphorus nitride esters are prepared as flameproofers of high durability for use on regenerated cellulose. The known synthesis from cyclic phosphorus nitride chlorides with alcohols in the presence of amines is controlled under specific temperature conditions such that desired side-reactions permit the production, in a simple manner and in very high yields, of products showing a durability to washing not hitherto achieved.
专利号:WO-9632368-A1 优先权日:1995-04-11 标题:One-pot synthesis of ring-brominated benzoate compounds
摘要:Wu, T.; Moeller, K. D., Science of Synthesis: Special Topics, (2021) 1, 487. 摘要:National Technical Information Service., OTS0528372 摘要:Toxicology & Carcinogenesis Studies of 2,3-Dibromo-1-Propanol in F344/N Rats and B6C3F1 Mice (Dermal Studies). Technical Report Series No. 400 (1993) NIH Publication No. 94-2855 U.S. Department of Health and Human Services, National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709 摘要:U.S. Department of Health and Human Services, Public Health Service, Center for Disease Control, National Institute for Occupational Safety Health. Registry of Toxic Effects of Chemical Substances (RTECS). National Library of Medicine's current MEDLARS file., p. 83/8212 摘要:BLUM A ET AL; SCIENCE (WASH DC) 201 (4360): 1020 (1978)