Organic Chemistry lab Due April 18‚ 2014 Title: Identification of Conjugated diene from Eucalyptus Oil Abstract: The purpose of this experiment is to separate and identify a conjugated diene from eucalyptus oil by making its Diels-Alder adduct with maleic anhydride. The unknown is one of four conjugated dienes with its names and the melting points. The melting point of the adduct was 112°C revealed the identity of the diene in eucalyptus oil which was α-phellandrene. Introduction: Some natural
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the purpose was to prepare the Diels-Alder adduct of the unknown conjugated diene in Eucalyptus oil and determine the approximate percentage of diene in Eucalyptus oil. To discover the product of this reaction‚ isolate the adduct‚ and classify the diene from the melting point of its adduct. The unknown was one of four conjugated dienes. Maleic anhydride Observation and Data The three substances‚ anhydrous diethyl ether‚ maleic anhydride‚ and the eucalyptus oil combined
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Electrocyclic Reactions (a) Definition and examples (b) Stereochemical aspects and the Woodward and Hoffmann rules 3) Cycloaddition Reactions (a) Definition and examples (b) Stereochemical aspects and the Woodward and Hoffmann rules (c) The Diels-Alder reaction (i) Stereospecific syn-addition (ii) Diene conformation (iii) Exo/endo stereoselectivity 4) Sigmatropic Rearrangements (a) Definition‚ examples and numbering NOTES 1) General Principles – Book reading is highly recommended
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attempt): 4 / 4 (100.00 %) Quiz #1 (3)NMRQuestion 1 1 / 1 point Equivalent protons in a molecule will result in one NMR signal. How many NMR signals would you predict for each of the following molecules? __1__ benzene __2__ 3-pentanone __4__ toluene __3__ ethanol __2__ t-butyl methyl ether 1. 1 2. 2 3. 3 4. 4 Question 2 1 / 1 point A compound to be analyzed by NMR should be dissolved in a solvent. Clearly the solvent should not have an NMR signal in the spectral area you are trying to
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Lab #4 The Synthesis of Organic Polymers CHM2123‚ Section C October 21‚ 2014 Introduction: Organic polymers are macromolecules that are composed of smaller molecules called monomers. There are two main groups of polymers: natural polymers and unnatural (synthetic) polymers. Natural polymers include proteins such as cellulose and starch and are a necessity for our existence. On the other hand‚ synthetic polymers such as the polycarbonate in our lab goggles
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1. Introduction The dominant end use of Maleic anhydride (MA) is in the production of unsaturated polyester resins. These laminating resins‚ which have high structural strength and good dielectric properties‚ have a variety of applications in automobile bodies‚ building panels‚ molded boats‚ chemical storage tanks‚ lightweight pipe‚ machinery housings and furniture. Other end products are fumaric acid‚ agricultural chemicals‚ alkyd resins‚ lubricants‚ copolymers‚ plastics‚ succinic acid‚ surface
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Section: 53 TA’s: Sheida and Ryan Mills Lab Partner: David Wilson Date of Experiment: October 7th‚ 2008 Purpose: The purpose is to study the difference between the stereochemistry of the two isomers‚ maleic and fumaric acid. The first part of the experiment called for the conversion of maleic acid into fumaric acid with the addition of a proton using the acid-catalyzed isomerisation‚ vacuum filtration‚ and reflux processes. The second part of the experiment was intended for using the molecular
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Maleic anhydride underwent the Dials-Alder reaction with distilled cyclopentadiene as the dienophile. The reaction was a cycloaddition which produced cis-Norbornene-5‚6-endo-dicarboxylic Anhydride surface. (1) Product one had a mass of 9.351 grams and product two had a mass of 9.572 grams. The theoretical yield was found to be 10.047 grams‚ which makes the percent yield to be 93.07%. Melting Points were found to confirm the purity of the product. Product one had a melting point of 163.7-164
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INTRODUCTION Maleic acid and Fumaric acid are both compounds belonging to the carboxylic acids class. In this experiment‚ we formed the two isomers of 1‚2-ethylenedicarboxylic acid and tested the solubility and melting points of both of these products. Both of these compounds involve a carbon-carbon double bond that is composed of one σ bond and one π bond. The overlap of sp2 hybrid orbitals forms the σ bond‚ and one empty p orbital forms the π bond. This process is illustrated in the figure below:
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J Polym Environ (2007) 15:25–33 DOI 10.1007/s10924-006-0042-3 ORIGINAL PAPER Chemical Treatments of Natural Fiber for Use in Natural Fiber-Reinforced Composites: A Review Xue Li Æ Lope G. Tabil Æ Satyanarayan Panigrahi Published online: 4 January 2007 Ó Springer Science+Business Media‚ LLC 2006 Abstract Studies on the use of natural fibers as replacement to man-made fiber in fiber-reinforced composites have increased and opened up further industrial possibilities. Natural fibers have
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