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  • functionalities
  • The results indicate that the AgNP@ESM biocomposite can achieve both SERS and catalytic functionalities simultaneously in a single entity with high performance, which promotes the potential applications of ESM modified with functional materials. (edu.au)
  • This direct functional group interconversion of non-activated carboxylic acids was achieved using mild reaction conditions and tolerated a variety of desirable functionalities. (ku.edu)
  • undergo
  • A range of 3 H -indoles and 2 H -benzo[ b ][1,hiazines smoothly undergo asymmetric Strecker reaction with ethyl cyanoformate in the presence of a Cinchona alkaloid -based thiourea catalyst at 10 °C to give structurally diverse nitrogen-containing heterocycles in good to excellent yields and with excellent ee. (rsc.org)
  • This reaction extends the scope of the traditional DcA reaction to carboxylic acids that do not typically undergo two electron decarboxylation and produces CO2 as the only stoichiometric byproduct. (ku.edu)
  • ligands
  • After the examination of the effect of NHC ligands on the efficiency of C-O bond activation, it was found that ICy shows a high catalytic activity. (nii.ac.jp)
  • The use of ICy led to the development of new reactions, which cannot achieve by using conventional common ligands. (nii.ac.jp)
  • catalyst
  • The catalyst materials are not consumed during the reaction but provide a template of sorts that helps the reactants find one another and bond. (innovations-report.com)
  • The present invention relates to a process for preparing a catalytic reaction using a bed of a copper-containing catalyst. (allindianpatents.com)
  • To reduce the complexity of the system during catalyst screening we first studied the nitroso Diels-Alder reaction with the highly enantioenriched diene 1 a (R = (S)CHPhOTBDPS (TBDPS = tert-butyldiphenylsilyl), 98 % ee) readily obtained by our recently reported desymmetrization of 1,4-cyclohexadiene (the ent series in Scheme 1 can be neglected). (docme.ru)
  • bonds
  • Supports are generally inert, simply providing a thermally stable platform for the metal particles, but some are "active" in that they are also involved in the bonds that speed along the catalytic reaction. (innovations-report.com)
  • Together with the oxidative insertion of Zn metal into C-X bonds, metathesis reactions of ZnCl 2 with more polar, more reactive organometallic reagents (typically organolithiums, RLi, or Grignard reagents, RMgX) are one of the most important synthetic tools to prepare organozinc reagents ( 2 ). (pnas.org)
  • as well as the reactions of saturated hydrocarbons that are the major subject of this booklet, the activation of C--H bonds in arenes or even olefins and acetylenes are thought of. (patricia-salon.ru)
  • A major reason for the sluggish development of XHI is likely that there are good ways to achieve the substitution of polar X-H bonds through classical uncatalysed nucleophilic displacement reactions. (rsc.org)
  • aromatic
  • In some organisms such as the hyperthermophile Thermotoga maritima, specific tyrosine and aromatic amino acid transaminases have not been identified to date, suggesting an additional role for histidinol-phosphate aminotransferase in other transamination reactions generating aromatic amino acids. (uzh.ch)
  • The reaction using γ-disubstituted allylboronic acids and various aromatic and aliphatic ketones afforded homoallylic alcohols bearing two adjacent quaternary stereocenters with excellent regio-, diastereo- and enantioselectivity (up to 97:3 er) in high yield. (diva-portal.org)
  • environmentally
  • Related to this stoichiometric metathesis, a flurry of recent reports have established that the use of catalytic amounts of environmentally benign ZnCl 2 with Grignard reagents greatly enhances the reactivity and selectivity of the latter in numerous cornerstone methodologies in organic synthesis such as alkylations ( 3 , 4 ), nucleophilic substitutions ( 5 ), or cross-coupling applications ( 6 ). (pnas.org)
  • pathways
  • during this first quantity, common info on cellulose constitution and houses is given, in addition to the rules of homogeneous and heterogenous cellulose reactions and degradation pathways. (patricia-salon.ru)
  • activation
  • This monograph is dedicated to the activation and diverse changes of saturated hydrocarbons (alkanes), i.e. reactions observed by means of the C--H and C--C bond cleavage. (patricia-salon.ru)
  • cross-coupling
  • Notably, both the metal complexes are catalytically active and can promote cascade reactions such as Ir catalyzed hydrogenation and Pd catalyzed Suzuki-Miyuara cross-coupling reactions simultaneously inside the cage while keeping the entire cage structure intact. (nanowerk.com)
  • chemical reactions
  • They make chemical reactions that normally occur at extremely high temperatures and pressures possible within factories, cars and the comparatively balmy conditions within the human body. (innovations-report.com)
  • A central goal of enzymology is to understand the physicochemical mechanisms that enable proteins to catalyze complex chemical reactions with high efficiency. (nih.gov)
  • insertion
  • Catalysed X-H insertion reactions into diazo compounds (where X is any heteroatom) are a powerful yet underutilized class of transformations. (rsc.org)
  • compounds
  • While NO removal reaction needed relatively a larger amount of Pt, NO_2 removal reaction needed a trace amount of relatively inactive compounds such as Co and Mn, which enhanced both store and release reactions. (nii.ac.jp)
  • Studying seemingly simple metathesis reactions between ZnCl 2 and t BuMgCl has, surprisingly, revealed a much more complex chemistry involving mixed magnesium-zinc compounds that could be regarded as Mg-Zn hybrids. (pnas.org)
  • conditions
  • A protic solvent, 2,2,2-trifluoroethanol ( CF 3 CH 2 OH ), was successfully introduced into hypervalent iodine( III )-involved catalytic cycles as an effective solvent, and the first iodoarene-catalyzed intramolecular carbon-nitrogen bond forming reaction was achieved under strong acid-free and mild conditions. (rsc.org)
  • metal
  • These investigations uncovered the adsorbate induced dynamic restructuring of metal surfaces on the timescales of chemisorption, catalytic reactions and on longer times controlled by mass transport. (springer.com)
  • indicate
  • Mechanistic studies of the allylic C−H trifluoroacetoxylation indicate that the reaction proceeds via ( η 3 -allyl)palladium(IV) intermediate. (diva-portal.org)
  • materials
  • Approaches to the preparation of enantioenriched materials via catalytic methods that destroy stereogenic elements of a molecule are discussed. (rsc.org)
  • development
  • After the seminal observations 3 and the subsequent demonstration by Merck that XHI could be used industrially (see panel D in Fig. 1 ), 4 it would seem logical that all aspects of this reaction would have been quickly refined, yet its development throughout the 80's and 90's was sporadic. (rsc.org)