multicomponent reactions in ionic liquids

... enhancing lipase activity in the synthesis of sugar ester using ionic liquids was investigated In the lipase-catalyzed esterifications of glucose with vinyl laurate or lauric acid in [Bmim][TfO], 2.4 ... 提出함 仁荷大學校 大學院 生物工學科 NGUYEN MINH HIEP LIPASE-CATALYZED SUGAR ESTERS SYNTHESIS IN IONIC LIQUIDS By NGUYEN MINH HIEP A THESIS submitted to the faculty of INHA UNIVERSITY In partial fulfillment of ... SCIENCE Department of Marine Science and Biological Engineering February 2009 TRƯỜNG ĐẠI HỌC KỸ THUẬT INHA Luận văn thạc sĩ NGUYỄN MINH HIỆP TỔNG HỢP SUGAR ESTERS TRONG IONIC LIQUIDS DƯỚI SỰ XÚC TÁC...

Ngày tải lên: 29/07/2015, 03:24

... tris(hydroxymethyl)aminoethane INTRODUCTION Ionic liquids (ILs) are organic salts remaining as liquids under ambient temperatures Since the rst reports on performing biotransformations in ILs,1,2 interests in using 18 IONIC ... Ammonium Ionic Liquids Other Abbreviations 2.1 Introduction 2.2 Ionic Liquids, Water, and Proteins 2.2.1 Ionic Nature of Ionic Liquids 2.2.2 Protic and Aprotic Ionic Liquids 2.2.3 Water Present in ... only in presenting the highest enzyme activity but also in stabilizing the protein against unfolding at high temperatures and in promoting protein renaturation upon cooling 2.2.3 Water Present in...

Ngày tải lên: 22/03/2014, 09:20

... Biocatalytic Reactions in Ionic Liquids 339 Whole-cell Systems and Enzymes other than Lipases in Ionic Liquids 339 Lipases in Ionic Liquids 342 Conclusions and Outlook 345 Outlook 348 Index 356 Ionic Liquids ... Reactions and Acid-Catalyzed Reactions in Ionic Liquids 174 Stoichiometric Organic Reactions 175 Molten salts as reagents 175 Reactions in chloroaluminate(III) and related ionic liquids 177 Reactions ... publications concerning ionic liquids as a function of time, as determined using SciFinder Preface Robin’s response is insightful It reflects, in part, the burgeoning growth of papers in this area...

Ngày tải lên: 09/05/2014, 17:05

... (Vidinha, Lourenco, Nunes, Duarte, and Barreiros) Similarly, ionic liquids are finding increasing use in the popular area of nanomaterials Much of this effort is directed toward using ionic liquids ... ranging from to 60 The fructosyl units are linked by (21) Ionic Liquids in Catalytic Biomass Transformation 19 linkages with the glucose as the terminating unit of the polymer chain [38] Inulins ... of 5-HMF using inulin in ionic liquids under mild conditions Combining [BMIM][Cl] and a strong acidic cation exchange resin gave a 5-HMF yield of 55% in 20 Subsequently, a two-step in one pot...

Ngày tải lên: 29/06/2014, 09:20

... with running buffer and the sample is introduced by dipping one end into the sample and applying an electric field (electrokinetic injection) or by applying gas pressure (hydrodynamic injection) ... solved by coupling CE with MS The main difficulty of coupling CE with MS lies in the fact that the MS system operating under high vacuum and interfacing to CE can reduce hydrodynamic flow in the capillary ... main advantages of CZE over conventional chromatography is that it minimizes or eliminates most sources of band broadening that occur in the later; indeed, broadening is 6-10 times higher in...

Ngày tải lên: 17/09/2015, 17:19

... calculated according to [22]: u in ,c = ζ c I RTin ,c AMEA xO2 ,in Pc Ach 4F (39) u in ,a = ζ a I RTin ,a AMEA x H ,in Pa Ach 2F (40) ISSN 2076-2895 (Print), ISSN 2076-2909 (Online) ©2013 International ... usually determine the limiting current density This is because an increase in current density corresponds to an increase in oxygen consumption The hydrogen molar fraction distribution in the anode ... cm2 serpentine flow-fields with single channel, double channel, cyclic-single channel, and symmetric-single channel patterns to investigate the effect of flow-field design High and low inlet humidity...

Ngày tải lên: 05/09/2013, 14:58

... of isomerizations is in that all atoms of the starting compound are incorporated into the product, respresenting a 100 % atom economy Miscellaneous catalytic reactions in aqueous media 267 which ... mild method for removal of protecting allyl groups under exceedingly mild conditions In an interesting reaction, reshuffling of functional groups can be achieved in the rearrangement of homoallylic ... tools for labeling important compounds, such as drugs, and for mechanistic investigations in reaction kinetics During catalytic hydrogenations in homogeneous aqueous solutions or in aqueous-organic...

Ngày tải lên: 23/12/2013, 07:19

... importance of alumina in the natural aquatic environment and its growing application in drinking and wastewater purification, the knowledge of aluminas structure and possible interactions in water are ... reduction in charge repulsion leading to better packing of the ionic surfactants and the increase of solubilisation of non -ionic surfactants in the hydrophobic microdomains formed by the ionic surfactants ... results in a sharp increase in the adsorption corresponding to solid formation Non -ionic ethoxylated alcohols show strong adsorption affinity for silica as opposed to other minerals such as alumina...

Ngày tải lên: 15/03/2014, 23:22

... thermautotrophicus neither contains methanophenazine, nor the cytochrome b-type proteins that are typical for the Methanosarcina electron-transport chain In an in vitro system from M marburgensis, ... suspensions were placed in a boiling water bath for h to destroy the cells After cooling and centrifugation (10 min, 27 000 g, °C), the supernatants were diluted in washing buffer to obtain preparations ... corresponding sodium motive force values that were maintained in methane-forming cells The results, indeed, support a Na+ translocation stoichiometry of two to four (Figs and 5) Our analyses indicate...

Ngày tải lên: 17/03/2014, 09:20

... · 10 in NaCl/Tris, mounted in glycerol containing 25% NaCl/Tris and 0.1% p-phenylenediamine and examined using a laser scanning microscope (TCS NT) equipped with a Leica (DMIRBE, Inc.) inverted ... penaeidin localization at the site of injection Injection of microorganisms resulted in a dramatic decrease in numbers of both circulating and tissue in ltrating haemocytes within h of injection ... H) Regarding phagocytosis reactions, internalized bacteria were observed after 20 incubation mainly into hyaline haemocytes (Fig 10I) Intracellular phagocytosed bacteria observed in hyaline cells...

Ngày tải lên: 18/03/2014, 01:20

... used in some ionic liquids 3.4.1 Chloroaluminate Systems In case of chloroaluminate ionic liquids, the potential of an aluminum electrode immersed in the acidic ionic liquids that contain AlCl3 ... electrodes in nonchloroaluminate ionic liquids especially for the N(CF3SO2 )− ionic liquids Platinum wire is used for the electrode and immersed in an ionic liquid that contains iodine and an ... LIQUIDS Hiroyuki Ohno 1.1 IONIC LIQUIDS Ionic liquids are salts with a very low melting temperature Ionic liquids have been of great interest recently because of their unusual properties as liquids...

Ngày tải lên: 22/03/2014, 09:20

... explain the dynamical properties on ILs based on MD simulation results taking into consideration mainly following points: how can cross-correlated ionic motions in ILs be modified by interionic ... Applications of Ionic Liquids in Lignin Chemistry 315 Zhu Yinghuai, Karen Tang Yuanting and Narayan S Hosmane Section Organic Reactions and Biological Applications 347 Chapter 14 Ionic Liquids: Green ... F., & Shirota, H (2007) Intermolecular Dynamics, Inter actions, and Solvation in Ionic Liquids Acc Chem Res., 40, 1217-1227 [4] Weingaertner, H (2007) Understanding ionic liquids at the molecular...

Ngày tải lên: 23/03/2014, 03:20

... Shishkina 18 ω = W0/Wing – Wing/W0 = fk7[InH]/(Wik6)0.5 = king[InH]/(Wik6)0.5, where W0 is the oxidation rate of methyl oleate without additivies InH, Wi – the initiation rate Since Wing is determined ... described in Ref 15 The interval from the beginning of the experience to the point of intersection of two straight lines for which tg α1 = tg α2 was taken as τ in the presence of InH The first line ... cellulose hydrolysis by celloviridin complex Phenosan in the form of industrially produced acid is used in cattle breeding by inducing the growth-stimulating action in the forage composition for...

Ngày tải lên: 28/03/2014, 10:20

... Boekel/Kinetic Modelling of Reactions in Foods DK3903_C000 Final Proof page i 12.11.2008 10:19pm Compositor Name: JGanesan Kinetic Modeling of Reactions in Foods Boekel/Kinetic Modelling of Reactions ... and explanation without intent to infringe Library of Congress Cataloging -in- Publication Data Van Boekel, Martinus A J S Kinetic modeling of reactions in foods / Martinus A J S van Boekel p cm ... Boekel/Kinetic Modeling of Reactions in Foods DK3903_C001 Final Proof page 5.11.2008 6:48pm Compositor Name: VBalamugundan Kinetic Modeling of Reactions in Foods 1-2 Quality attributes (intrinsic...

Ngày tải lên: 02/04/2014, 15:04

... Enzymes in Ionic Liquids 655 Special Techniques for Biocatalysis with Ionic Liquids 657 Conclusions and Outlook 658 Industrial Applications of Ionic Liquids 663 Matthias Maase Ionic Liquids in Industrial ... Biocatalytic Reactions and Their Special Needs 641 Examples of Biocatalytic Reactions in Ionic Liquids 644 Whole Cell Systems and Enzymes Other than Lipases in Ionic Liquids 644 Lipases in Ionic Liquids ... Stable are Ionic Liquids? 682 Are Ionic Liquids Toxic? 683 Are Ionic Liquids Green? 684 How Can Ionic Liquids be Recycled ? 684 How Can Ionic Liquids be Disposed Of? 685 Which is the Right Ionic Liquid?...

Ngày tải lên: 02/04/2014, 16:36

... created in a single operation, with the relative stereochemistry being defined by the usually endo-favoring transition state Asymmetric Diels-Alder reactions using a dienophile containing a chiral ... unprotected by law printed in the Federal Republic of Germany printed on acid-free paper Typesetting K+V Fotosatz GmbH, Beerfelden Printing betz-druck GmbH, Darmstadt Bookbinding Wilhelm Osswald ... N-sulfonylamino acid moiety examined, the polymeric catalyst containing a relatively long oxyethylene chain cross-linkage gave higher enantioselectivity than those with flexible alkylene chain cross-linkages...

Ngày tải lên: 03/04/2014, 12:15

... illustrated with colors indicating where the intermediates reside in the final product The approach used in this book is also unique in that it emphasizes the clever use of many reactions that might ... (http://elsevier.com), by selecting “Customer Support” and then “Obtaining Permissions.” Library of Congress Cataloging -in- Publication Data Application Submitted British Library Cataloguing in Publication Data ... N,N’-bis(1-methyl-3-oxobutylidene)ethylenediamine N O AIBN 2,2'-azo bisisobutyronitrile Alloc allyloxycarbonyl O Am amyl (n-pentyl) An p-anisyl ANRORC aq anionic ring-opening ring-closing aqueous O NA NA O AQN anthraquinone O Ar...

Ngày tải lên: 03/04/2014, 12:15

... about Ionic Liquids (ILs) in Green Chemistry Prepared: Huynh Thanh Dien Ionic Liquids in Green Chemistry    What are Ionic liquids (ILs)? Why consider of ILs? The characteristic properties of ionic ... temperature ionic liquids (RTIL) are salts which are already liquid below room temperature Variations in cations and anions can produce literally millions of ionic liquids, including chiral, fluorinated, ... the potential to catalyze certain reactions in certain systems Ionic liquids are non-volatile, hence they may be used in high vacuum systems and high temperature reactions without the requirement...

Ngày tải lên: 11/06/2014, 23:50

... conducted in 1,2,3-triazolium ionic liquids at room temperature in the prescence of DABCO Interestingly the reaction furnished improved yields within shorter reaction time in the triazolium ionic liquids ... imidazolium ionic liquids (Jeong and Ryu 2010) 4.1 Application of 1,2,3-triazolium ionic liquids in catalyst tagging So far, the major field of application for 1,2,3-triazolium ionic liquids is in ionic ... Applications in Synthesis 237 Chapter 11 Ionic Liquids Recycling for Reuse Samir I Abu-Eishah 239 Chapter 12 Ionic Liquids in Green Carbonate Synthesis 273 Jianmin Sun, Ruixia Liu, Shin-ichiro Fujita...

Ngày tải lên: 29/06/2014, 09:20

... ionic liquid technology by drawing on the inherent ability of the chloroaluminate(III) ionic liquids to catalyse cationic polymerisation reactions, as Advanced Applications of Ionic Liquids in ... advantages, ionic liquids have been investigated as solvents in a number of microwavemediated reactions Microwave heating in ionic liquids was used also for polycondensation reactions leading to polyamides ... Nanoscale Catalysts in Ionic Liquids: Coupling and Hydrogenation Reactions 393 Martin H G Prechtl, Jackson D Scholten and Jairton Dupont Chapter 17 Ionic Liquids: Applications in Heterocyclic Synthesis...

Ngày tải lên: 29/06/2014, 13:20