Organic Chemistry I Spring 2013 Practice test 1. Name the following compounds: a. 5-tert-butyl-7-isopropyl-6-sec-butyl-undecane b. cis-2-(5‚6-dimethylheptyl)-6-(3-methylpentyl)piperidine c. trans -2-nonyl-3-octyl-tetrahydrofuran d. trans-1‚6-dimethylbicyclo[4.3.0]nonane e. cis-6‚8-ditert-butylspiro[3.5]nonane f. 1‚6-dimethylcyclohexene g. (Z)-3-bromo-4-fluoro-5-methyl-oct-4-ene h. (E)-8-(1-chloroethyl)nonadec-8-ene 2. Draw the structures of the following compounds: a b e c
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SYNT 0719 – Brominating Alkenes OBJECTIVE The purpose of this lab will be to brominate trans-stilbene by using acetic acid and pyrimidium tribromide by refluxing the mixture. To test the purity of product I will take the melting point which should be around 240 ºC along with a flame test which should be green-blue. CHEMICAL PROPERTIES TABLE See Attached Lab Notebook Copies REACTION MECHANISM In this lab we used multiple techniques to complete and verify the bromination of trans-stilbene
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The Stereochemistry of Bromine Addition: Bromination of trans-Cinnamic Acid Pitak Chuawong Objectives 1. To perform bromination of trans-‐cinnamic acid 2. To investigate stereochemistry of bromination reaction Introduction Alkenes undergo electrophilic addition to give alkyl halides. When bromine is used as a
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I. Objectives * Be able to prepare cyclohexene from the dehydration of cyclohexanol * Understand the mechanisms of the dehydration reaction (acid-catalyzed dehydration). * Know how to use the necessary equipment for this reaction‚ such as the fractioning column. * Obtain positive results in unsaturation tests for the presence of carbon-carbon double bond (cyclohexene). II. Background Cyclohexanol‚ the reagent of this experiment‚ is used in the production of nylon
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molecules hold them together. The larger the molecule (as it moves down the halogen group) the bigger the intermolecular forces are between electrons because with more rings the distance between each electron is larger. The larger elements such as Bromine and Iodine are larger molecules with a larger amount of intermolecular force between each electron. This increase in intermolecular attraction means that the required heat energy to reach the boiling point increases. Fluorine has a significantly lower
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2014 Periodicity of the Halogens Goal: To design and carry out an experiment that will give enough data to rank the three halogens from highest to lowest electron affinity. Background: The three aqueous solutions given in this experiment are Iodine‚ Bromine‚ and Chlorine; they are all non-polar and dissolve easily in Hexane which is also non-polar. When there is a color change in a mixture that means that it reacted and that there was a double displacement reaction when there is no change then it didn’t
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on a piece of copper metal? What will happen if a drop of solution containing copper ions is placed on a piece of silver metal? Chlorine and bromine are both non-metals (both negative in compounds) and both are used for disinfecting and bleaching. What will happen if chlorine is added to a solution containing bromide ions? What will happen if bromine is added to a solution containing chloride ions? Permanganate ions (MnO4-) react with iron(II) ions (Fe2+) in acid solution. What about the ratio
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bromination with hydrogen peroxide and hydrobromic acid‚ and debromination with zinc. The yields of parts A‚ B‚ and C are as follows: 68.6 %‚ 54.6 %‚ and 55.9 %. Introduction In the chemical process of bromination‚ an alkene is halogenated with bromine. Solvents that are typically used include methylene chloride and carbon tetrachloride along with iodine‚ the traditional reagent. However‚ because of the carcinogenic properties of the solvents and the corrosiveness of iodine‚ other alternatives are
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Bromine’s physical state is a liquid‚ and it’s density is 3.122 g/cm^3. Bromine has a boiling point of 137.8ºF‚ which is also 58.8ºC. isotopes (Br-80)- 69-97 It’s melting point is 19ºF‚ also is -7.2ºC. Bromine is not very reactive as fluorine or chlorine but it’s way more reactive than iodine. Bromine is a nonmetal‚ and it’s a natural element. Bromine is known to be a very dense reddish brown toned liquid when formed compounds with elements such as chlorine‚ it works as a bleaching agent. It evaporates
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CHM 2210 – Fall 2012 – Test 4 Name (print):_________________________ 1. What is the IUPAC name for the following compound? a) b) c) d) 3-methyl-1-penten-4-yne 3-methyl-1-buten-4-yne 4-methyl-4-penten-1-yne 4-methyl-4-buten-1-yne 2. What is the major organic product obtained from the following reaction? 2 equiv Br2 a) b) c) d) 2‚3-dibromobutane 2‚2‚3‚3-tetrabromobutane 2‚3-dibromobutene 2‚2-dibromobutane 3. What is the best choice of reagent(s) to perform the following transformation
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