CAS: 630-02-4; N-Octacosane

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溴代十四烷置于magnesium体系中,用 乙醚,甲苯 作为反应溶剂,化学反应 3.5H,反应生成 二十八烷
参考文献:NMR-Based Molecular Ruler For Determining The Depth Of Intercalants Within The Lipid Bilayer
标题:NMR-Based Molecular Ruler For Determining The Depth Of Intercalants Within The Lipid Bilayer
摘要:The Development Of "Molecular Rulers" Would Allow One To Quantitatively Locate The Penetration Depth Of Intercalants Within Lipid Bilayers. To This End,An Attempt Was Made To Correlate The C-13 NMR Chemical Shift Of Polarizable "Reporter" Carbons (E.G.,Carbonyls) Of Intercalants Within Dmpc Liposomal Bilayers-With The Polarity It Experiences,And With Its Angstrom Distance From The Interface.This Requires Families Of Molecules With Two "Reporter Carbons" Separated By A Known Distance,Residing At Various Depths/polarities Within The Bilayer. For This Purpose,Two Homologous Series Of Dicarbonyl Compounds,Methyl N-Oxooctadecanoates And The Corresponding N-Oxooctadecanoic Acids (N = 4-16),Were Synthesized. To Assist In Assignment And Detection Several Homologs In Each System Were Prepared (13)C(-)Enriched In Both Carbonyls. Within Each Family,The Number Of Carbons And Functional Groups Remains The Same,With The Only Difference Being The Location Of The Second Ketone Carbonyl Along The Fatty Acid Chain. Surprisingly,The Head Groups Within Each Family Are Not Anchored Near The Lipid-Water Interface,Nor Are They Even All Located At The Same Depth. Nevertheless,Using An Iterative Best Fit Analysis Of The Data Points Enables One To Obtain An Exponential Curve. The Latter Gives Substantial Insight Into The Correlation Between Polarity (Measured In Terms Of The Reichardt Polarity Parameter,E-T(30)) And Penetration Depth Into The Liposomal Bilayer. Still Missing From This Curve Are Data Points In The Moderate Polarity Range. (C) 2014 Elsevier Ireland Ltd. All Rights Reserved.
DOI:10.1016/j.Chemphyslip.2014.07.007

专利信息

专利号:US-2023183177-A1
优先权日:2020-04-24
标题:Enantioselective chemo-enzymatic synthesis of optically active amino amide compounds
发明人：GRILL BIRGIT; WINKLER MARGIT; SCHWAB HELMUT; STROHMEIER GERNOT; DONSBACH KAI; WALDVOGEL SIEGFRIED R; ARNDT SEBASTIAN; WEIS DOMINIK
权利人:PHARMAZELL GMBH
摘要:The present invention relates to a novel biocatalytic process for the stereoselective preparation of alpha amino amide compounds catalyzed by NHase enzymes. A further aspect of the invention relates to novel NHase enzymes as well as further improved NHase enzyme mutants, nucleic acid molecules encoding these enzymes, recombinant microorganisms suitable for preparing such enzymes and mutants. Another aspect of the invention relates to a chemo-biocatalytic process for the preparation of lactam compounds comprising the new catalytic process for the preparation of alpha amino amide compounds catalyzed by NHase enzymes, as well as the chemical oxidation of the alpha amino amide by applying certain chemical oxidation catalysts suitable for converting the alpha amino amide under retention of its stereochemical configuration to the respective lactam. The novel chemo-biocatalytic process is particularly suited for the synthesis of valuable pharmaceutical compounds, like in particular (S)-Levetiracetam.

专利号:US-5162284-A
优先权日:1991-08-05
标 题 :Copper promoted cobalt-manganese spinel catalyst and method for making the catalyst for Fischer-Tropsch synthesis
发明人：SOLED STUART L; IGLESIA ENRIQUE; FIATO ROCCO A
权利人:EXXON RESEARCH ENGINEERING CO
摘要:A copper promoted cobalt manganese spinel useful for Fischer-Tropsch synthesis of olefins and higher paraffins is prepared from an aqueous solution of cobalt and manganese salts of at least one alpha-hydroxy aliphatic carboxylic acid.

专利号:US-5185378-A
优先权日:1990-10-01
标题:Iron-zinc catalysts for the conversion of synthesis gas to alpha-olefins
发明人：SOLED STUART L; MISEO SABATO; IGLESIA ENRIQUE; FIATO ROCCO A
权利人:EXXON RESEARCH ENGINEERING CO
摘要:New copper-potassium promoted iron-zinc catalysts wherein the iron:zinc atomic ratio is 5:1 or greater, exhibit improved activity, selectivity and stability in the synthesis of alpha-olefins from hydrogen and carbon monoxide.

专利号:US-5100856-A
优先权日:1990-10-01
标 题:Iron-zinc based catalysts for the conversion of synthesis gas to alpha-olefins
发明人：SOLED STUART L; MISEO SABATO; IGLESIA ENRIQUE; FIATO ROCCO A
权利人:EXXON RESEARCH ENGINEERING CO
摘要:New copper-potassium promoted iron-zinc catalysts wherein the iron:zinc atomic ratio is 5:1 or greater, exhibit improved activity, selectivity and stability in the synthesis of alpha-olefins from hydrogen and carbon monoxide.

专利号:US-5248701-A
优先权日:1991-08-05
标题:Substituted cobalt catalysts for Fischer-Tropsch synthesis
发明人：SOLED STUART L; IGLESIA ENRIQUE; FIATO ROCCO A
权利人:EXXON RESEARCH ENGINEERING CO
摘要:A copper promoted cobalt manganese spinel useful for Fischer-Tropsch synthesis of olefins and higher paraffins is prepared from an aqueous solution of cobalt and manganese salts of at least one alpha-hydroxy aliphatic carboxylic acid.

专利号:US-11945764-B2
优先权日:2021-06-09
标 题:Efficient synthesis of diglycolamide molecules
发明人：JANSONE-POPOVA SANTA; POPOVS ILJA
权利人:UT BATTELLE LLC
摘要:A method for producing a diglycolamide molecule having the formula: n nwherein R 1 and R 2 are independently selected from alkyl groups (R) and acyl groups (C(O)R) in which the alkyl groups (R) contain 1-30 carbon atoms and optionally contain an ether or thioether linkage between carbon atoms, and R 5 and R 6 are independently selected from hydrogen atom and alkyl groups containing 1-3 carbon atoms; and one or both pairs of R 1 and R 2 are optionally interconnected to form a ring; the method comprising: combining a diglycolic acid molecule (A) and a secondary amine (B) to form a salt intermediate (C), and heating the salt intermediate (C) to a temperature of 100° C. to 300° C. to form the diglycolamide of Formula (1) in a dehydration process, wherein the method is shown schematically as follows: