Development of the Metathesis Method in Organic Synthesis
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Olefin-Metathesis Catalysts for the Preparation of Molecules and Materials (Nobel Lecture 2005)**
NOBEL LECTURES DOI: 10.1002/adsc.200600523 Olefin-Metathesis Catalysts for the Preparation of Molecules and Materials (Nobel Lecture 2005)** Robert H. Grubbsa,* a Victor and Elizabeth Atkins Professor of Chemistry Arnold and Mabel Beckman Laboratories of Chemical Synthesis California Institute of Technology, Pasadena, CA 91125, USA Fax : (+1)-626–564–9297 [**] Copyright The Nobel Foundation 2005. We thank the Nobel Foundation, Stockholm, for permission to print this lecture Received: February 21, 2006 This is a story of our exploration of the olefin-meta- ly added to this reaction, 1-butene was again ob- thesis reaction, a reaction that has been the major served. This discovery has since served as the founda- emphasis of my independent research. As with all sto- tion for an amazing array of nickel chemistry and cat- ries of scientific discovery, there are three compo- alysis. In addition, as nickel had been found to possess nents: the discoveries, the resulting applications, and, unexpected reactivity, other metal salts were also in- perhaps the most important of all, the people in- vestigated. In particular, when titanium and zirconium volved. Starting from observations made from seem- halides were used in combination with alkyl alumi- ingly unrelated work, our investigations into the fun- num compounds, a new form of polyethylene was ob- damental chemistry of this transformation have been tained. Natta further demonstrated that similar cata- an exciting journey, with major advances often result- lysts could promote the formation of stereoregular ing from complete surprises, mistakes, and simple in- polymers from propylene. The 1963 Nobel Prize in tuition. Ultimately, these efforts have contributed to Chemistry was awarded to Ziegler and Natta for this olefin metathesis becoming the indispensable synthet- work. -
Part I: Carbonyl-Olefin Metathesis of Norbornene
Part I: Carbonyl-Olefin Metathesis of Norbornene Part II: Cyclopropenimine-Catalyzed Asymmetric Michael Reactions Zara Maxine Seibel Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Graduate School of Arts and Sciences COLUMBIA UNIVERSITY 2016 1 © 2016 Zara Maxine Seibel All Rights Reserved 2 ABSTRACT Part I: Carbonyl-Olefin Metathesis of Norbornene Part II: Cyclopropenimine-Catalyzed Asymmetric Michael Reactions Zara Maxine Seibel This thesis details progress towards the development of an organocatalytic carbonyl- olefin metathesis of norbornene. This transformation has not previously been done catalytically and has not been done in practical manner with stepwise or stoichiometric processes. Building on the previous work of the Lambert lab on the metathesis of cyclopropene and an aldehyde using a hydrazine catalyst, this work discusses efforts to expand to the less stained norbornene. Computational and experimental studies on the catalytic cycle are discussed, including detailed experimental work on how various factors affect the difficult cycloreversion step. The second portion of this thesis details the use of chiral cyclopropenimine bases as catalysts for asymmetric Michael reactions. The Lambert lab has previously developed chiral cyclopropenimine bases for glycine imine nucleophiles. The scope of these catalysts was expanded to include glycine imine derivatives in which the nitrogen atom was replaced with a carbon atom, and to include imines derived from other amino acids. i Table of Contents List of Abbreviations…………………………………………………………………………..iv Part I: Carbonyl-Olefin Metathesis…………………………………………………………… 1 Chapter 1 – Metathesis Reactions of Double Bonds………………………………………….. 1 Introduction………………………………………………………………………………. 1 Olefin Metathesis………………………………………………………………………… 2 Wittig Reaction…………………………………………………………………………... 6 Tebbe Olefination………………………………………………………………………... 9 Carbonyl-Olefin Metathesis……………………………………………………………. -
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. -
Artificial Intelligence for Computer-Aided Synthesis
ORIGINAL RESEARCH published: 04 August 2020 doi: 10.3389/fceng.2020.00005 Artificial Intelligence for Computer-Aided Synthesis In Flow: Analysis and Selection of Reaction Components Pieter P. Plehiers 1,2, Connor W. Coley 1, Hanyu Gao 1, Florence H. Vermeire 1, Maarten R. Dobbelaere 2, Christian V. Stevens 3, Kevin M. Van Geem 2* and William H. Green 1* 1 Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States, 2 Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Ghent, Belgium, 3 SynBioC Research Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent Edited by: University, Ghent, Belgium René Schenkendorf, Technische Universitat Braunschweig, Germany Computer-aided synthesis has received much attention in recent years. It is a challenging Reviewed by: topic in itself, due to the high dimensionality of chemical and reaction space. It becomes Richard Anthony Bourne, even more challenging when the aim is to suggest syntheses that can be performed in University of Leeds, United Kingdom Alexei Lapkin, continuous flow. Though continuous flow offers many potential benefits, not all reactions University of Cambridge, are suited to be operated continuously. In this work, three machine learning models United Kingdom have been developed to provide an assessment of whether a given reaction may benefit *Correspondence: from continuous operation, what the likelihood of success in continuous flow is for a Kevin M. Van Geem [email protected] certain set of reaction components (i.e., reactants, reagents, solvents, catalysts, and William H. Green products) and, if the likelihood of success is low, which alternative reaction components [email protected] can be considered. -
Olefin Metathesis in Aqueous Media Offers a New, Broad M
Green Chemistry CRITICAL REVIEW View Article Online View Journal | View Issue Olefin metathesis in aqueous media Cite this: Green Chem., 2013, 15, 2317 Jasmine Tomasek and Jürgen Schatz* The worldwide undisputable and unattainable chemist is nature, using water as a solvent of choice in biosynthesis. Water as a solvent not only indicates “green chemistry” but is also inevitable in biochemical reactions as well as syntheses of several pharmaceutical products. In the last few decades, several organic reactions were successfully carried out under aqueous conditions, a powerful and attractive tool in Received 3rd June 2013, organic synthesis metathesis reaction. This review summarises advances made in metathesis reaction in Accepted 12th July 2013 aqueous media. Two main strategies can be distinguished: the design of water soluble catalysts to obtain DOI: 10.1039/c3gc41042k homogeneous conditions and using commercially available catalysts to utilize the advantages of hetero- www.rsc.org/greenchem geneous conditions. reactions, meaning coupling reactions of cyclic and acyclic Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Introduction alkenes or alkynes as well as polymerisation reactions In organic chemistry, C–C coupling reactions open a wide (Scheme 1).1 Accordingly, the metathesis has been of great range of applications for effective synthesis, which otherwise interest since its discovery in the mid-1950s3 and reveals a would be difficult or even hardly feasible. The olefin meta- powerful tool for both industrial applications, -
Wacker Oxidation ~Anti-Markovnikov~
Anti-Markovnikov Olefin Functionalization ~Prof. Robert H. Grubbs’ Work~ 4th Literature Seminar July 5, 2014 Soichi Ito (D1) Contents 1. Introduction • Flow of Prof. Grubbs’ Research • Markovnikov’s Rule • Wacker Oxidation 2. Grubbs’ Work • Substrate-Controlled Wacker Oxidation • Catalyst-Controlled Wacker-Type Oxidation 2 Introduction ~Flow of Research~ Olefin Metathesis Anti-Markovnikov Wacker Oxidation of Terminal Olefin Substrate-Controlled Wacker Oxidation of Internal Olefin Z-Selective Metathesis Hydration Ethenolysis + Reduction Hydroamination Z-Selective Ethenolysis Catalyst-Controlled Decarbonylative Dehydration Hydrophosphonation Production of Terminal Olefin Functionalization of Terminal Olefin 3 Introduction ~Markovnikov’s Rule~ Two-Step Two-Step (+1C) 4 Robert H. Grubbs et al. Science, 2011, 333, 1609. Anti-Markovnikov Hydration of Olefins • One-Step William C. Trogler et al. Science 1986, 233, 1069. This work was difficult to reproduce. Inorg. Chem. 1988, 27, 3151. • One-Step with Activated Olefins Robert G. Bergman and F. Dean Toste et al. J. Am. Chem. Soc. 2003, 125, 8696. Ben L. Feringa and Gerard Roelfes et al. Nat. Chem. 2010, 2, 991. • Three-Step 5 Shannon S. Stahl et al. J. Am. Chem. Soc. 2010, 132, 15116. Anti-Markovnikov Wacker Oxidation / Reduction Strategy Oxidation cycle must be compatible with the reduction cycle. aldehyde-selective Wacker Oxidation 6 Robert H. Grubbs et al. Science, 2011, 333, 1609. Introduction ~Wacker-Tsuji Oxidation~ • 1894 F. C. Phillips reported stoichiometric reaction. • 1959 J. Smidt et al. reported the Wacker process. (oxidation of ethylene to acetaldehyde) Investigations for convenient laboratory methods • 1976 J. Tsuji et al. reported PdCl2, CuCl / DMF, H2O method. “Terminal alkenes may be viewed as masked ketones.” 7 Jacques Muzart Tetrahedron 2007, 63, 7505. -
Hoveyda–Grubbs Catalysts with an N→Ru Coordinate Bond in a Six-Membered Ring
Hoveyda–Grubbs catalysts with an N→Ru coordinate bond in a six-membered ring. Synthesis of stable, industrially scalable, highly efficient ruthenium metathesis catalysts and 2-vinylbenzylamine ligands as their precursors Kirill B. Polyanskii1, Kseniia A. Alekseeva1, Pavel V. Raspertov1, Pavel A. Kumandin1, Eugeniya V. Nikitina1, Atash V. Gurbanov2,3 and Fedor I. Zubkov*1 Full Research Paper Open Access Address: Beilstein J. Org. Chem. 2019, 15, 769–779. 1Organic Chemistry Department, Faculty of Science, Peoples’ doi:10.3762/bjoc.15.73 Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St., Moscow 117198, Russian Federation, 2Centro Received: 23 October 2018 de Química Estrutural, Instituto Superior Técnico, Universidade de Accepted: 25 February 2019 Lisboa, Av. Rovisco Pais, 1049–001 Lisbon, Portugal and 3Organic Published: 22 March 2019 Chemistry Department, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan This article is part of the thematic issue "Progress in metathesis chemistry III". Email: Fedor I. Zubkov* - [email protected] Guest Editors: K. Grela and A. Kajetanowicz * Corresponding author © 2019 Polyanskii et al.; licensee Beilstein-Institut. License and terms: see end of document. Keywords: CM; cross metathesis; Hoveyda–Grubbs catalyst; olefin metathesis; RCM; ring-closing metathesis; ring-opening cross metathesis; ROCM; ruthenium metathesis catalyst; styrene; 2-vinylbenzylamine Abstract A novel and efficient approach to the synthesis of 2-vinylbenzylamines is reported. This involves obtaining 2-vinylbenzylamine ligands from tetrahydroisoquinoline by alkylation and reduction followed by the Hofmann cleavage. The resultant 2-vinylbenzyl- amines allowed us to obtain new Hoveyda–Grubbs catalysts, which were thoroughly characterised by NMR, ESIMS, and X-ray crystallography. -
Retrosynthetic Design of Metabolic Pathways to Chemicals Not Found in Nature
Retrosynthetic design of metabolic pathways to chemicals not found in nature The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Lin, Geng-Min et al. "Retrosynthetic design of metabolic pathways to chemicals not found in nature." Biology 14 (April 2019): 82-107 © 2019 The Authors As Published http://dx.doi.org/10.1016/J.COISB.2019.04.004 Publisher Elsevier BV Version Final published version Citable link https://hdl.handle.net/1721.1/125854 Terms of Use Creative Commons Attribution-NonCommercial-NoDerivs License Detailed Terms http://creativecommons.org/licenses/by-nc-nd/4.0/ Available online at www.sciencedirect.com Current Opinion in ScienceDirect Systems Biology Retrosynthetic design of metabolic pathways to chemicals not found in nature Geng-Min Lin1, Robert Warden-Rothman1 and Christopher A. Voigt Abstract simpler chemical building blocks derived from pe- Biology produces a universe of chemicals whose precision and troleum or other sources [1]. Chemicals that are large complexity is the envy of chemists. Over the last 30 years, the and complex with many functional groups and ster- expansive field of metabolic engineering has many successes eocenters have required Herculean efforts to build; in optimizing the overproduction of metabolites of industrial in- for example, halichondrin B has 32 stereocenters (4 terest, including moving natural product pathways to production billion isomers) and requires a sprawling total syn- hosts (e.g., plants to yeast). However, there are stunningly few thesis whose longest linear path is 47 reactions [2]. examples where enzymes are artificially combined to make a Solutions have been found to incredibly challenging chemical that is not found somewhere in nature. -
New Insights Into the Mechanism of Alkene Metathesis
ACADEMIA ROMÂNĂ Rev. Roum. Chim., Revue Roumaine de Chimie 2011, 56(4), 299-316 http://web.icf.ro/rrch/ Dedicated to Professor Alexandru T. Balaban on the occasion of his 80th anniversary REVIEW NEW INSIGHTS INTO THE MECHANISM OF ALKENE METATHESIS Carmen I. MITAN,* Valerian DRAGUTAN and Ileana DRAGUTAN Institute of Organic Chemistry, Roumanian Academy, Spl. Independentei, 202 B, sect. 6, Bucharest, Roumania Received September 8, 2010 The diversity of alkene metathesis reactions, presently applied to their full potential in synthesis of complex scaffolds and assemblies or as key steps in the total synthesis of natural products, demands a deep understanding of the intricate metathesis mechanism since not all of the catalysts are efficient for all of the substrates, nor do they trigger the identical mechanistic pathways, though they share the same main intermediates (the generally accepted metallacarbene and metallacyclobutane). Beyond that, metathesis processes are occasionally complicated by the occurrence of side reactions resulting in a number of by-products. Unveiling the influence of reaction conditions, and in particular of the catalytic system and the active species generated thereof during metathesis of a chosen substrate is paramount for obtaining high yields in the targeted product, at low costs. This paper focuses on relevant kinetic and mechanistic aspects reported to date for alkene metathesis induced by Ru-alkylidene complexes, concentrating on the interplay ligand dissociation – initiation step – overall catalytic activity, as determined by the catalyst structure. INTRODUCTION∗ Metathesis encompasses a range of well- established synthetic methodologies such as ring- Alkene metathesis is basically a catalytic closing metathesis (RCM), ring-opening metathesis transalkylidenation reaction formally occurring by (ROM), cross-metathesis (CM), enyne metathesis scission of two olefinic carbon-carbon double bonds (EM), acyclic diene metathesis (ADMET) and ring- with formation of two new C=C bonds (Scheme 1).1 opening metathesis polymerization (ROMP). -
Recent Advances in Total Synthesis Via Metathesis Reactions
SYNTHESIS0039-78811437-210X © Georg Thieme Verlag Stuttgart · New York 2018, 50, 3749–3786 review 3749 en Syn thesis I. Cheng-Sánchez, F. Sarabia Review Recent Advances in Total Synthesis via Metathesis Reactions Iván Cheng-Sánchez Francisco Sarabia* Department of Organic Chemistry, Faculty of Sciences, University of Málaga, Campus de Teatinos s/n. 29071- Málaga, Spain [email protected] Received: 16.04.2018 ly explained by the emergence, design, and development of Accepted after revision: 30.05.2018 powerful catalysts that are capable of promoting striking Published online: 18.07.2018 DOI: 10.1055/s-0037-1610206; Art ID: ss-2018-z0262-r transformations in highly efficient and selective fashions. In fact, the ability of many of them to forge C–C bonds be- Abstract The metathesis reactions, in their various versions, have be- tween or within highly functionalized and sensitive com- come a powerful and extremely valuable tool for the formation of car- pounds has allowed for the preparation of complex frame- bon–carbon bonds in organic synthesis. The plethora of available cata- lysts to perform these reactions, combined with the various works, whose access were previously hampered by the lim- transformations that can be accomplished, have positioned the me- itations of conventional synthetic methods. Among the tathesis processes as one of the most important reactions of this centu- myriad of recent catalysts, those developed and designed to ry. In this review, we highlight the most relevant synthetic contributions promote metathesis reactions have had a profound impact published between 2012 and early 2018 in the field of total synthesis, reflecting the state of the art of this chemistry and demonstrating the and created a real revolution in the field of total synthesis, significant synthetic potential of these methodologies. -
STIX 394372 1 En Bookfront
Quantum Systems in Physics, Chemistry, and Biology Progress in Theoretical Chemistry and Physics VOLUME 30 Honorary Editors Rudolph A. Marcus (California Institute of Technology, Pasadena, CA, USA) Roy McWeeny (Università di Pisa, Pisa, Italy) Editors-in-Chief J. Maruani (formerly Laboratoire de Chimie Physique, Paris, France) S. Wilson (formerly Rutherford Appleton Laboratory, Oxfordshire, UK) Editorial Board E. Brändas (University of Uppsala, Uppsala, Sweden) L. Cederbaum (Physikalisch-Chemisches Institut, Heidelberg, Germany) G. Delgado-Barrio (Instituto de Matemáticas y Física Fundamental, Madrid, Spain) E.K.U. Gross (Freie Universität, Berlin, Germany) K. Hirao (University of Tokyo, Tokyo, Japan) Chao-Ping Hsu (Institute of Chemistry, Academia Sinica, Taipei, Taiwan) R. Lefebvre (Université Pierre-et-Marie-Curie, Paris, France) R. Levine (Hebrew University of Jerusalem, Jerusalem, Israel) K. Lindenberg (University of California at San Diego, San Diego, CA, USA) A. Lund (University of Linköping, Linköping, Sweden) M.A.C. Nascimento (Instituto de Química, Rio de Janeiro, Brazil) P. Piecuch (Michigan State University, East Lansing, MI, USA) M. Quack (ETH Zürich, Zürich, Switzerland) S.D. Schwartz (Yeshiva University, Bronx, NY, USA) O. Vasyutinskii (Russian Academy of Sciences, St Petersburg, Russia) Y.A. Wang (University of British Columbia, Vancouver, BC, Canada) Former Editors and Editorial Board Members I. Prigogine (†) W.F. van Gunsteren (*) J. Rychlewski (†) H. Hubač (*) Y.G. Smeyers (†) E. Kryachko (*) R. Daudel (†) M.P. Levy (*) M. Mateev (†) G.L. Malli (*) W.N. Lipscomb (†) P.G. Mezey (*) Y. Chauvin (†) N. Rahman (*) H.W. Kroto (†) S. Suhai (*) H. Ågren (*) O. Tapia (*) V. Aquilanti (*) P.R. Taylor (*) D. Avnir (*) R.G. Woolley (*) J. Cioslowski (*) †: deceased; *: end of term More information about this series at http://www.springer.com/series/6464 Alia Tadjer ⋅ Rossen Pavlov (†) Jean Maruani ⋅ Erkki J. -
Dissertation Reactivity and Selectivity in The
DISSERTATION REACTIVITY AND SELECTIVITY IN THE POLYMERIZATION OF MULTIFUNCTIONAL ACRYLIC MONOMERS BY CHIRAL ZIRCONOCENIUM CATALYSTS Submitted by Fernando Vidal Peña Department of Chemistry In partial fulfillment of the requirements For the Degree of Doctor of Philosophy Colorado State University Fort Collins, Colorado Summer 2017 Doctoral Committee: Advisor: Eugene Y.-X. Chen Richard G. Finke Steven Strauss Ellen Fisher David Wang Copyright by Fernando Vidal Peña 2017 All Rights Reserved ABSTRACT REACTIVITY AND SELECTIVITY IN THE POLYMERIZATION OF MULTIFUNCTIONAL ACRYLIC MONOMERS BY CHIRAL ZIRCONOCENIUM CATALYSTS Described in this dissertation are the results of investigating the reactivity and selectivity in the polymerization of multifunctional acrylic monomers by chiral cationic zirconocenium catalysts. The unprecedented precision polymer synthesis method developed in this workthe polymerization of polar divinyl monomers that is not only living but also simultaneously chemoselective and stereoselectivehas enabled the synthesis of well-defined highly stereoregular functionalized polymers bearing reactive C=C bonds on every chiral repeat unit. Thus, under ambient conditions, chiral ansa-ziroconocenium catalysts of the appropriate symmetry (C2- vs CS-ligated) have afforded highly isotactic and highly syndiotactic double-bond- carrying polymers, respectively, with controlled molecular weights and narrow dispersities. The enantiomorphic-site controlled, conjugate-addition coordination polymerization mechanism is responsible for the observed