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Knowledge check Subject area: Organic chemistry Level: 14–16 years (Higher) Topic: Alkenes Source: rsc.li/34R2Wqn 1. This question is about the molecules in the table. Alkane or alkene Answer: Alkane. Answer: Alkene. Answer: Alkane. Name of molecule Answer: Ethane. Answer: Butene or Answer: Propane. but-2-ene. Molecular formula Answer: C2H6. Answer: C4H8. Answer: C3H8. of molecule a) What do all of these molecules have in common? Answer: They are all hydrocarbons. Write your answers to parts b), c) and d) into the table. b) State which are alkanes and which are alkenes. c) Name each of the molecules. d) Write down the molecular formula of each molecule. e) Which molecule(s) react using addition reactions? Answer: Butene (but-2-ene). f) What is the general formula for an alkene? Answer: CnH2n. Organic chemistry in context: © Royal Society of Chemistry Alkenes (H) edu.rsc.org Page 1 of 3 2. This question is about pentane and pentene. The structures of these molecules are shown below. Pentene Pentane Which of these statements are true or false about these molecules? Write your answers into the box – ‘T’ for true, and ‘F’ for false. a) The molecular formula for pentene is C5H10. T b) Pentene is a saturated molecule. F c) Bromine water can be used to distinguish between these T two molecules. d) Pentene burns with a smokier flame than pentane. T e) The carbon double bond in pentene makes it more reactive T than pentane. f) Hydrogen gas will react with pentene to make pentane. T g) Pentene could react with steam, in the presence of a T catalyst, to form an alcohol called pentanol. h) When pentene reacts, its carbon double bond turns into a T carbon single bond. Organic chemistry in context: © Royal Society of Chemistry Alkenes (H) edu.rsc.org Page 2 of 3 3. This question is about the use of bromine water for testing for the presence of a carbon double bond. Indicate the colour change seen when these molecules are added, separately, to bromine water. Draw a straight line between the molecule and the correct colour change. Colour change of bromine water Butene Stays orange C6H14 Orange to colourless Colourless to orange Organic chemistry in context: © Royal Society of Chemistry Alkenes (H) edu.rsc.org Page 3 of 3 .

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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…………………………………………………………….
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Title Crystallization of Stereospecific Olefin Copolymers (Special Issue on Physical Chemistry) Author(S) Sakaguchi, Fumio; Kita
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