Basic Research Needs for Catalysis Science
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Horizon Europe - EU Multiannual Financial Framework
30 November 2018 Dear Prime Minister / Chancellor / Taoiseach / President, Horizon Europe - EU Multiannual Financial Framework (a letter to Heads of State or Government, signed by Nobel Prize and other international award winners and CEOs and Chairmen of leading European companies) At the European Council meeting in December, European leaders will discuss the 2021-2027 EU Multiannual Financial Framework, including the budget to be assigned to Research and Innovation, mainly through the next framework programme Horizon Europe. On this occasion, we want to remind them of the economic impact and the tangible improvements to European citizens' lives that have been generated over the years by the EU framework programmes for Research and Innovation. We urge Europe’s Heads of State or Government to support or even to increase the investment in Horizon Europe. €120 billion was seen as the absolute minimum to make Europe a global frontrunner by the High Level Group set by the European Commission and chaired by Pascal Lamy. Indeed, EU-funded research had a decisive impact and positively contributed to various areas, such as avoiding unnecessary chemotherapy for breast cancer patients; opening the way to batteries and solar cells of the next generation; reducing aircraft emissions and noise; enhancing cybersecurity; qualifying the future impact of artificial intelligence on jobs; etc. European industry underlines that the EU framework programmes help companies to build up know-how, have access to the “state-of-the-art”, achieve synergies and critical mass, access highly skilled and talented people, and network with customers and suppliers. EU-funded research has made an immense contribution to creating and disseminating scientific knowledge indispensable for innovation to flourish. -
Fischer Carbene Complexes in Organic Synthesis Ke Chen 1/31/2007
Baran Group Meeting Fischer Carbene Complexes in Organic Synthesis Ke Chen 1/31/2007 Ernst Otto Fischer (1918 - ) Other Types of Stabilized Carbenes: German inorganic chemist. Born in Munich Schrock carbene, named after Richard R. Schrock, is nucleophilic on November 10, 1918. Studied at Munich at the carbene carbon atom in an unpaired triplet state. Technical University and spent his career there. Became director of the inorganic Comparision of Fisher Carbene and Schrock carbene: chemistry institute in 1964. In the 1960s, discovered a metal alkylidene and alkylidyne complexes, referred to as Fischer carbenes and Fischer carbynes. Shared the Nobel Prize in Chemistry with Geoffery Wilkinson in 1973, for the pioneering work on the chemistry of organometallic compounds. Schrock carbenes are found with: Representatives: high oxidation states Isolation of first transition-metal carbene complex: CH early transition metals Ti(IV), Ta(V) 2 non pi-acceptor ligands Cp2Ta CH N Me LiMe Me 2 2 non pi-donor substituents CH3 (CO) W CO (CO)5W 5 (CO)5W A.B. Charette J. Am. Chem. Soc. 2001, 123, 11829. OMe O E. O. Fischer, A. Maasbol, Angew. Chem. Int. Ed., 1964, 3, 580. Persistent carbenes, isolated as a crystalline solid by Anthony J. Arduengo in 1991, can exist in the singlet state or the triplet state. Representative Fischer Carbenes: W(CO) Cr(CO) 5 5 Fe(CO)4 Mn(CO)2(MeCp) Co(CO)3SnPh3 Me OMe Ph Ph Ph NEt2 Ph OTiCp2Cl Me OMe Foiled carbenes were defined as "systems where stabilization is Fischer carbenes are found with : obtained by the inception of the facile reaction which is foiled by the impossibility of attaining the final product geometry". -
Opportunities for Catalysis in the 21St Century
Opportunities for Catalysis in The 21st Century A Report from the Basic Energy Sciences Advisory Committee BASIC ENERGY SCIENCES ADVISORY COMMITTEE SUBPANEL WORKSHOP REPORT Opportunities for Catalysis in the 21st Century May 14-16, 2002 Workshop Chair Professor J. M. White University of Texas Writing Group Chair Professor John Bercaw California Institute of Technology This page is intentionally left blank. Contents Executive Summary........................................................................................... v A Grand Challenge....................................................................................................... v The Present Opportunity .............................................................................................. v The Importance of Catalysis Science to DOE.............................................................. vi A Recommendation for Increased Federal Investment in Catalysis Research............. vi I. Introduction................................................................................................ 1 A. Background, Structure, and Organization of the Workshop .................................. 1 B. Recent Advances in Experimental and Theoretical Methods ................................ 1 C. The Grand Challenge ............................................................................................. 2 D. Enabling Approaches for Progress in Catalysis ..................................................... 3 E. Consensus Observations and Recommendations.................................................. -
Organic Synthesis: Handout 1
Prof Tim Donohoe: Strategies and Taccs in Organic Synthesis: Handout 1 Organic Synthesis III 8 x 1hr Lectures: Michaelmas Term Weeks 5-8 2016 Mon at 10am; Wed at 9am Dyson Perrins lecture theatre Copies of this handout will be available at hEp://donohoe.chem.ox.ac.uk/page16/index.html 1/33 Prof Tim Donohoe: Strategies and Taccs in Organic Synthesis: Handout 1 Organic Synthesis III Synopsis 1) Introduc5on to synthesis: (i) Why do we want to synthesise molecules- what sort of molecules do we need to make? (ii) What aspects of selecvity do we need to accomplish a good synthesis (chemo-, regio- and stereoselecvity)? (iii) Protecng group chemistry is central to any syntheAc effort (examples and principles) (iv) What is the perfect synthesis (performed in industry versus academia)? 2) The chiral pool: where does absolute stereochemistry come from? 3) Retrosynthesis- learning to think backwards (revision from first and second year). Importance of making C-C bonds and controlling oxidaAon state. Umpolung 4) Some problems to think about 5) Examples of retrosynthesis/synthesis in ac5on. 6) Ten handy hints for retrosynthesis 7) Soluons to the problems Recommended books: General: Organic Chemistry (Warren et al) Organic Synthesis: The DisconnecRon Approach (S. Warren) Classics in Total Synthesis Volumes I and II (K. C. Nicolaou) The Logic of Chemical Synthesis (E. J. Corey) 2/33 View Article Online / Journal Homepage / Table of Contents for this issue 619461 Strychniqae and BYucine. Pavt XLII. 903 Prof Tim Donohoe: Strategies and Taccs in Organic Synthesis: Handout 1 (i) Why do we want to synthesise complex molecules? Isolated from the Pacific Yew in 1962 Prescribed for prostate, breast and ovarian cancer Unique mode of acRon 1x 100 year old tree = 300 mg Taxol Isolated in 1818- poisonous Stuctural elucidaon took R. -
The Selective Synthesis of Aromatics and Furans From
THE SELECTIVE SYNTHESIS OF AROMATICS AND FURANS FROM BIOMASS-DERIVED COMPOUNDS by Eyas Mahmoud A dissertation submitted to the Faculty of the University of Delaware in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Chemical Engineering Summer 2016 © 2016 Eyas Mahmoud All Rights Reserved THE SELECTIVE SYNTHESIS OF AROMATICS AND FURANS FROM BIOMASS-DERIVED COMPOUNDS by Eyas Mahmoud Approved: __________________________________________________________ Abraham M. Lenhoff, Ph.D. Chair of the Department of Chemical and Biomolecular Engineering Approved: __________________________________________________________ Babatunde A. Ogunnaike, Ph.D. Dean of the College of Engineering Approved: __________________________________________________________ Ann L. Ardis, Ph.D. Senior Vice Provost for Graduate and Professional Education I certify that I have read this dissertation and that in my opinion it meets the academic and professional standard required by the University as a dissertation for the degree of Doctor of Philosophy. Signed: __________________________________________________________ Raul F. Lobo, Ph.D. Professor in charge of dissertation I certify that I have read this dissertation and that in my opinion it meets the academic and professional standard required by the University as a dissertation for the degree of Doctor of Philosophy. Signed: __________________________________________________________ Dionisios G. Vlachos, Ph.D. Member of dissertation committee I certify that I have read this dissertation and that in my opinion it meets the academic and professional standard required by the University as a dissertation for the degree of Doctor of Philosophy. Signed: __________________________________________________________ Donald A. Watson, Ph.D. Member of dissertation committee I certify that I have read this dissertation and that in my opinion it meets the academic and professional standard required by the University as a dissertation for the degree of Doctor of Philosophy. -
Dehydrogenation by Heterogeneous Catalysts
Dehydrogenation by Heterogeneous Catalysts Daniel E. Resasco School of Chemical Engineering and Materials Science University of Oklahoma Encyclopedia of Catalysis January, 2000 1. INTRODUCTION Catalytic dehydrogenation of alkanes is an endothermic reaction, which occurs with an increase in the number of moles and can be represented by the expression Alkane ! Olefin + Hydrogen This reaction cannot be carried out thermally because it is highly unfavorable compared to the cracking of the hydrocarbon, since the C-C bond strength (about 246 kJ/mol) is much lower than that of the C-H bond (about 363 kJ/mol). However, in the presence of a suitable catalyst, dehydrogenation can be carried out with minimal C-C bond rupture. The strong C-H bond is a closed-shell σ orbital that can be activated by oxide or metal catalysts. Oxides can activate the C-H bond via hydrogen abstraction because they can form O-H bonds, which can have strengths comparable to that of the C- H bond. By contrast, metals cannot accomplish the hydrogen abstraction because the M- H bonds are much weaker than the C-H bond. However, the sum of the M-H and M-C bond strengths can exceed the C-H bond strength, making the process thermodynamically possible. In this case, the reaction is thought to proceed via a three centered transition state, which can be described as a metal atom inserting into the C-H bond. The C-H bond bridges across the metal atom until it breaks, followed by the formation of the corresponding M-H and M-C bonds.1 Therefore, dehydrogenation of alkanes can be carried out on oxides as well as on metal catalysts. -
Design, Synthesis, Photochemical and Biological Evaluation of Novel Photoactive Molecular Switches
TESIS DOCTORAL Título Design, Synthesis, Photochemical and Biological Evaluation of Novel Photoactive Molecular Switches Autor/es David Martínez López Director/es Diego Sampedro Ruiz y Pedro José Campos García Facultad Facultad de Ciencia y Tecnología Titulación Departamento Química Curso Académico Design, Synthesis, Photochemical and Biological Evaluation of Novel Photoactive Molecular Switches, tesis doctoral de David Martínez López, dirigida por Diego Sampedro Ruiz y Pedro José Campos García (publicada por la Universidad de La Rioja), se difunde bajo una Licencia Creative Commons Reconocimiento-NoComercial- SinObraDerivada 3.0 Unported. ̉ Permisos que vayan más allá de lo cubierto por esta licencia pueden solicitarse a los titulares del copyright. © El autor © Universidad de La Rioja, Servicio de Publicaciones, 2019 publicaciones.unirioja.es E-mail: [email protected] Facultad de Ciencia y Tecnología Departamento de Química Área de Química Orgánica Grupo de Fotoquímica Orgánica TESIS DOCTORAL DESIGN, SYNTHESIS, PHOTOCHEMICAL AND BIOLOGICAL EVALUATION OF NOVEL PHOTOACTIVE MOLECULAR SWITCHES Memoria presentada en la Universidad de La Rioja para optar al grado de Doctor en Química por: David Martínez López Junio 2019 Facultad de Ciencia y Tecnología Departamento de Química Área de Química Orgánica Grupo de Fotoquímica Orgánica D. DIEGO SAMPEDRO RUIZ, Profesor Titular de Química Orgánica del Departamento de Química de la Universidad de La Rioja, y D. PEDRO JOSÉ CAMPOS GARCÍA, Catedrático de Química Orgánica del Departamento de Química de la Universidad de La Rioja. CERTIFICAN: Que la presente memoria, titulada “Design, synthesis, photochemical and biological evaluation of novel photoactive molecular switches”, ha sido realizada en el Departamento de Química de La Universidad de La Rioja bajo su dirección por el Licenciado en Química D. -
Sustainable Catalysis
Green Process Synth 2016; 5: 231–232 Book review Sustainable catalysis DOI 10.1515/gps-2016-0016 Sustainable catalysis provides an excellent in-depth over- view of the applications of non-endangered elements in Michael North (Ed.) all aspects of catalysis from heterogeneous to homogene- Sustainable catalysis: with non-endangered metals ous, from catalyst supports to ligands. The Royal Society of Chemistry, 2015 Four volumes of the book series are divided into RSC Green Chemistry series nos. 38–41 two sub-topics devoted to (i) metal-based catalysts and Part 1 (ii) catalysts without metals or other endangered ele- Print ISBN: 978-1-78262-638-1 ments. Each sub-topic comprises of two books due to the PDF eISBN: 978-1-78262-211-6 detailed analysis of catalytic applications described. All Part 2 chapters are written by the world-leading researchers in Print ISBN: 978-1-78262-639-8 the area; however, covering far beyond the scope of their PDF eISBN: 978-1-78262-642-8 immediate research interests, which makes the book par- ticularly valuable for a wide range of readers. Sustainable catalysis: without metals or other Sustainable catalysis: with non-endangered metals endangered elements begins with a very brief chapter which describes the Part 1 concept of elemental sustainability, overviewing the Print ISBN: 978-1-78262-640-4 abundance of the critical elements and perspectives on PDF eISBN: 978-1-78262-209-3 sustainable catalysts. The chapters follow the groups of EPUB eISBN: 978-1-78262-752-4 the periodic table from left to right, from alkaline metals to Part 2 lead spanning 22 chapters. -
Chemical Synthesis of Carbon-14 Labeled Ricinine and Biosynthesis
1.2 PROC. OF 'nJE OKLA. ACAD. OF SCI. FOR 19M Chemical Synthesis of Carbon-14 Labeled Ridnine and Biosynthesis of Ricinine in Ricinus communis L I IL s. YANG, B. TRIPLE'rJ', IL S. )[LOS and G. B. WALLER Oldahoma State Umvenity, Acricultural Experiment station, Stillwater Ricinine (Fig. 1, tormula V; 1,2-dihydro-4-methoxy-1-methyl-2-oxo ntcotinonttrUe) is a mildly toxic alkaloid produced by the castor plant Bkiflu.t commuflu L. Studies on the biosynthesis of ricinine have been in progreu in our laboratory for several years (Waller and Henderson, 1961; Hadwiger et a!., 1963; Yang and Waller, 1965). Recently Waller et at (1Na) demoll8trated that 7~% to 90% of ricinine-'H and ricinine-8-t 'C wu degraded by the caator plant. This demonstration of metabolic acti vity servea to refute the earlier concepts that regarded alkaloids as by products of a number of irreversible and useless reactions associated with nitrogen metabolism (Pictet and Court, 1907; Cromwell, 1937; Vickery, 1941 ). To enable us to further stUdy the degradation of ricinine by the cutor plant, alkaloid labeled with carbon-14 in the pyridine ring which poueues a high specific activity is required. This report provides detailed information on the micro-scale synthesis of ricinine-3,~14C. The chemical synthesis of ricinine was initiated in the early part of this century by several workers in their attempts to prove the structure of the akaIoid. Spilth and Koller (1923) synthesized ricinine by the oxidation of 4-chloroquinoline via the intermediates 4-chloro-2-aminoquin oline-3-carboxylic acid and 2,4-dichlorontcoUnonitrile. -
Supporting Information
Electronic Supplementary Material (ESI) for RSC Advances. This journal is © The Royal Society of Chemistry 2021 Supporting Information Synthesis, Oligomerization and Catalytic Studies of a Redox- Active Ni4-Cubane: A detailed Mechanistic Investigation Saroj Kumar Kushvaha, a† Maria Francis, b† Jayasree Kumar, a Ekta Nag, b Prathap Ravichandran, a b a Sudipta Roy* and Kartik Chandra Mondal* aDepartment of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India. bDepartment of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507, India. † Both authors contributed equally. Table of Contents 1. General remarks 2. Syntheses of complexes 1-3 3. Detail characterization of complexes 1-3 4. Computational details 5. X-ray single crystal diffraction of complexes 1-3. 6. Details of catalytic activities of complex 3 6.1. General procedures for the syntheses of aromatic heterocycles (6) and various diazoesters (7) 6.2. Optimization of reaction condition for cyclopropanation of aromatic heterocycles (6) 6.3. General synthetic procedure and characterization data for cyclopropanated aromatic heterocycles (8) 6.4. Determination of relative stereochemistry of 8 7. 1H and 13C NMR spectra of compounds 8a-j 8. Mechanistic investigations and mass spectrometric analysis 9. References S1 1. General remarks All catalytic reactions were performed under Argon atmosphere. The progress of all the catalytic reactions were monitored by thin layer chromatography (TLC, Merck silica gel 60 F 254) upon visualization of the TLC plate under UV light (250 nm). Different charring reagents, such as phosphomolybdic acid/ethanol, ninhydrin/acetic acid solution and iodine were used to visualize various starting materials and products spots on TLC plates. -
Gold-Catalyzed Ethylene Cyclopropanation
Gold-catalyzed ethylene cyclopropanation Silvia G. Rull, Andrea Olmos* and Pedro J. Pérez* Full Research Paper Open Access Address: Beilstein J. Org. Chem. 2019, 15, 67–71. Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, doi:10.3762/bjoc.15.7 CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química, Universidad de Huelva, Campus de El Received: 17 October 2018 Carmen 21007 Huelva, Spain Accepted: 11 December 2018 Published: 07 January 2019 Email: Andrea Olmos* - [email protected]; Pedro J. Pérez* - This article is part of the thematic issue "Cyclopropanes and [email protected] cyclopropenes: synthesis and applications". * Corresponding author Guest Editor: M. Tortosa Keywords: © 2019 Rull et al.; licensee Beilstein-Institut. carbene transfer; cyclopropane; cyclopropylcarboxylate; ethylene License and terms: see end of document. cyclopropanation; ethyl diazoacetate; gold catalysis Abstract Ethylene can be directly converted into ethyl 1-cyclopropylcarboxylate upon reaction with ethyl diazoacetate (N2CHCO2Et, EDA) F F in the presence of catalytic amounts of IPrAuCl/NaBAr 4 (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazole-2-ylidene; BAr 4 = tetrakis(3,5-bis(trifluoromethyl)phenyl)borate). Introduction Nowadays the olefin cyclopropanation through metal-catalyzed carbene transfer starting from diazo compounds to give olefins constitutes a well-developed tool (Scheme 1a), with an exquisite control of chemo-, enantio- and/or diastereoselectiv- ity being achieved [1,2]. Previous developments have involved a large number of C=C-containing substrates but, to date, the methodology has not been yet employed with the simplest olefin, ethylene, for synthetic purposes [3]. Since diazo compounds bearing a carboxylate substituent are the most Scheme 1: (a) General metal-catalyzed olefin cyclopropanation reac- commonly employed carbene precursors toward olefin cyclo- tion with diazo compounds. -
Guidelines to Achieving High Selectivity for the Hydrogenation of Α
Guidelines to achieving high selectivity for the hydrogenation of α,β-unsaturated aldehydes with bimetallic and dilute alloy catalysts − A review Mathilde Luneau,†,a Jin Soo Lim,†,a Dipna A. Patel,‡,a E. Charles H. Sykes,‡ Cynthia M. Friend,† and Philippe Sautet*,,§ † Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA ‡ Department of Chemistry, Tufts University, Medford, MA 02155, USA Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA § Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA * Email: [email protected] a These three authors contributed equally to this review. Abstract Selective hydrogenation of α,ß-unsaturated aldehydes to unsaturated alcohols is a challenging class of reactions, yielding valuable intermediates for the production of pharmaceuticals, perfumes, and flavorings. On monometallic heterogeneous catalysts, the formation of the unsaturated alcohols is thermodynamically disfavored over the saturated aldehydes. Hence, new catalysts are required to achieve the desired selectivity. Herein, the literature of three major research areas in catalysis is integrated as a step toward establishing the guidelines for enhancing the selectivity: reactor studies of complex catalyst materials at operating temperature and pressure; surface science studies of crystalline surfaces in ultrahigh vacuum; and first-principles modeling using density functional theory calculations. Aggregate analysis shows that bimetallic and dilute alloy catalysts significantly enhance the selectivity to the unsaturated alcohols compared to monometallic catalysts. This com- prehensive review focuses primarily on the role of different metal surfaces as well as the factors that promote the adsorption of the unsaturated aldehyde via its C=O bond, most notably by elec- tronic modification of the surface and formation of the electrophilic sites.