Rebecca Hardy Section 4 Ashleigh Stapleton June 18‚ 2012 Experiment 32: Identification of a Conjugated Diene from Eucalyptus oil Introduction In this experiment‚ 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
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Purpose: To synthesize 1‚2‚3‚4-tetraphenylnaphthalene through a two-step synthesis. The aldol condensation reaction between benzil and dibenzyl ketone forms 2‚3‚4‚5-tetraphenylcyclopentadienone‚ which then reacts with a benzene formed by anthranilic acid and isoamyl nitrate in order to yield 1‚2‚3‚4-tetraphenylnaphthalene. Reaction Equation A: Synthesis of 2‚3‚4‚5-tetraphenylcyclopentadienone: A solution of 4 capsules potassium hydroxide (0.5g) and 5mL anhydrous ethanol was prepared
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Quiz #1 Attempt 1 Written: Jul 7‚ 2012 9:48 AM - Jul 7‚ 2012 9:50 AM Submission View Your quiz has been submitted successfully. Question 1 1 / 1 point At what time do you have to complete your online prelab assignment to be allowed to participate in the lab? Question options: A week before the lab Day before the lab at 10 pm The morning of lab day at 8 am One hour before the lab Question 2 1 / 1 point Which materials/chemicals belong in the desiccator? Question options: Drying
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formation typically forms the major product because it takes less kinetic energy to be formed due to secondary orbital interactions with the substituents in transition states (Hunt). The rule that guides this principle is typically referred to as the “Alder Endo Rule”. In instances where the diene and dienophile are staggered and they must reach for each other in order to form the product‚ the exo product is formed (Hunt).
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2: High Pressure Liquid Chromatography Results Retention times should be quoted to two decimal places and standard deviations to three significant figures. Retention times (mins): Anthracene 8.67 Benzene 4.37 Naphthalene 5.98 Anthracene standards Peak Area Ratio Sample Concentration Anthracene Benzene A/B 4 2.25 mg/100mL 355003 496920 0.714406746 3 4.5 mg/100mL 583453 467385 1.248334885 2 6.75 mg/100mL 888620 513249 1.73136236 1 9 mg/100mL 1097279 518713
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consumption averaged 10‚500 t per year‚ and for the 1990s use increased to 12‚800 t per year.Endosulfan is a derivative of hexachlorocyclopentadiene and is chemically similar to aldrin‚ chlordane‚ and heptachlor. Specifically‚ it is produced by the Diels-Alder reaction of hexachlorocyclopentadiene with cis-butene-1‚4-diol and subsequent reaction of the adduct with thionyl chloride. Technical endosulfan is a 7:3 mixture of stereoisomers‚ designated α and β. α- and β-endosulfan are conformational isomers
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Experiment 1: Mechanism of Nitrile Oxide and Alkene Cycloaddition 1. Purpose: to clarify the mechanism for the cycloaddition reaction between benzonitrile oxide and an alkene‚ and to test the regiochemistry of the reaction between benzonitrile oxide and styrene. 2. Plan: Each student in a group of three will work to create a reaction with the Benzonitrile Oxide with‚ cis-stilbene‚ trans-stilbene‚ or styrene in an Erlenmyer flask. With this Reaction solution thin layer chromatography will be
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order if and when the communist insurrection started. Rudolf Diels‚ head of the Prussian Political Police‚ arrived after Hitler‚ Goebbels and Goering. Diels later claimed that Goering told him that the fire was the start of a communist revolt and that “not a moment must be lost.” Diels claimed that Hitler completely lost his temper and shouted “as I have never seen him do before” that he would show no mercy to those responsible. Diels claimed that Hitler ordered that every communist official should
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Chem 3650 Organic II Lab Lecture Summer 2013 Instructor: Victoria Dougherty M.S. Victoria Dougherty M.S. Office: BSE 1.340 Phone: 458-5473 (I do not have voicemail) Office Hours: Tuesday and Thursday: noon – 1:00 pm (or by appointment) Monday and Wednesday: 1:00 pm to 2:00 pm E-mail: victoria.dougherty@utsa.edu (put Chem 3650 in subject) Lab instructors and sections: Lab instructors Email (put Chem 3652 in subject) Section(s) Times Marilyn Wooten PhD. marilyn.wooten@gmail.com 01T 7:30–11:20
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SYNTHESIS OF TRANS-9-(2-PHENYLETHENYL) ANTHRACENE (A WITTIG REACTION) Introduction: The purpose of this experiment is to convert carbonyl compounds to alkenes using Wittig reaction. In this case we will be synthesizing Trans-9-(2-phenylethenyl) anthracene from benzyltriphenylphosphonium chloride and 9-anthraldehyde. We will also aim to obtaining a high percent yield and purity for the synthesis of Trans-9-(2-phenylethenyl) anthracene. The mechanism for this reaction goes thus:
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