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 and warmed in a 25mL beaker. Benzil (2
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Tetraphenylcyclopentadienone Joshua Krank Principles of Organic Chemistry Laboratory‚ Department of Chemistry and Biochemistry North Dakota State University‚ Fargo‚ ND 58102 Introduction: The purpose of this experiment was to synthesize tetraphenylcyclopentadienone using a reaction of dibenzyl ketone (1‚3-diphenyl-2-propanone) with benzil in the presence of base. The reaction then proceeded with an aldol condensation reaction.5 This product was obtained using extraction (reflux)‚ recrystallization
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light. The reactants are bright yellow in color while the products are a very deep purple color appearing almost black. Introduction- The synthesis of Tetraphanylcyclopentadienone was a further example of the adol condensation reaction. Tetraphenylcyclopentadienone was the final product of the three step process shown in earlier experiments. The products that were produced in one experiment were used as the reactants in the next. In the beginning of the adol
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Multistep Synthesis of Tetraphenylcyclopentadienone Author: Instructor: Date work performed: 10.18.2012--10.25.2012 Date work submitted: 11.01.2012 Abstract: The aim of this experiment was to perform a multistep synthesis to form tetraphenylcyclopentadienone. The first step of the reactions was to synthesize benzoin from the condensation of benzaldehyde. A yield of 28.91% benzoin was obtained. The MP of benzoin was 127O-130O C and the IR spectra displayed a carbonyl peak at 3415 cm-1
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CHEM 3125 Experiment 4: Multistep synthesis of tetraphenylcyclopentadienone Overall Synthesis: CHEMICALS: wk 1: thiamine hydrochloride (1 g/student)‚ 95% ethanol (8 mls/ student)‚ 2M NaOH (5 mls/student)‚ benzaldehyde (4 mls/student) wk 2: 95% ethanol (30 mls/student) wk 3: acetic acid (6 mls/student)‚ ammonium nitrate (1 g/student)‚ 0.1g/ml cupric acetate (1.5 mls/student)‚ dichloromethane (6 mls/ student)‚ 30% acetone in heptanes (3 mls/student)‚ 95% ethanol (20 mls/student) wk 4:
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icing on a cupcake the demonstrator will describe how to do so‚ allowing an auditory learner to learn. So both a visual and auditory learner can benefit from demonstrations. Now to group discussions and how both visual and auditory learners can use group discussions to help in there learning processes. Group discussions
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Discussion Board Question 7 THE CASE OF BRIAN B. AND THE MEDICAL FILE TEST Brian B. is taken into an exam room in the office of Dr. K. by the medical assistant‚ Amy. Amy gets into an animated discussion with Brian about their mutually favorite baseball team. As Amy leaves the exam room‚ she accidentally places Brian’s medical file on the counter. While Brian waits for Dr. K.‚ he reads through his file folder. He is shocked to discover that his recent test for AIDS came back positive. Brian
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Discussion In the model systems (solutions and paper)‚ which samples browned the fastest and why? Which samples did not go brown and why? Why did the paper brown so rapidly compared to the solutions. What caused any significant differences between the model and real systems? In particular are there other ingredients in the cookie that could take part in the reactions or is the heating different in some way? Sample A and sample B are overlap after fry the paper. Sample B is more browning
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Review Test Submission: Learning the Language - Chapter 03 Menu Management Options * * * * Spring 2013:-0EE-Principles of Management (BUSN105-0EE-E1-201230) * Announcements * Start Here * Class Sessions * Discussions * Resources * My Grades * Instructor * Communication & Tools * Help Review Test Submission: Learning the Language - Chapter 03 Content User | Leonard E Moore | Course | Spring 2013:-0EE-Principles of Management |
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English 1A: Discussion Topics John Berger’s “Ways of Seeing” Topic 1: Berger argues that there are barriers to vision‚ problems in the ways we see or don’t see original works of art‚ problems that can be located in and overcome by strategies of approach. For this topic‚ discuss what‚ as you read Berger‚ gets in the way when we look at paintings‚ and what it is that we might do to overcome the barriers to vision (and to history). Imagine that you are speaking to someone interested in art‚ but someone
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