Introduction: This experiment focuses on carrying out a Perkin Reaction to synthesize (E) and (Z) isomers of α-phenylcinnamic acid. This was accomplished by refluxing benzaldehyde‚ phenylacetic acid‚ acetic anhydride and triethylamine as a base. The chemical equation of a Perkin Reaction can be seen below. The reaction mechanism for the synthesis of α-phenylcinnamic acid is shown below: Results: Theoretical Yield Therefore‚ phenylacetic acid is the limiting reagent. Table
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ChemActivity 10: Exercises 1. Draw a complete mechanism including the intermediate and most likely product for the reaction of each alkene below with H-X. H + H Cl + Cl Cl + + Br H Br H I Br + H I H + I H 2. Draw a complete mechanism of each pair of reactant including any favorable rearrangements and all important resonance structures of all intermediates. Reactant Pair 1 Cl H Br 1 + Cl No shift stable benzylic carbocation H: shift H H Br
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The global market for biosurfactants is expected to reach USD 2‚308.8 million by 2020‚ according to a new study by Grand View Research‚ Inc. Escalating consumer preference towards the use of bio-based products‚ particularly in Europe and North America is expected to increase biosurfactant penetration. In addition‚ stringent regulatory policies are further expected to augment the biosurfactant demand over the next six years. Methyl Ester Sulfonate (MES) was the largest consumed biosurfactant‚ accounting
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Group Dynamics Within this essay I will reflect upon a specific issue of group dynamics that was experienced during a group exercise. Gibbs (1988) reflective model (Jasper‚ 2003. p.77) will be used to reflect upon the issue effectively and to set out the structure of reflection. Confidentiality and the GSCC code of practice will be kept to and maintained throughout this essay. The names of the people within the issues explained will be made up due to confidentiality. Group dynamics is that field
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Instructor: Christina Oltmann‚ Ph.D. Oral Group Presentations and Peer Evaluations The groups will on the day and in the order indicated below. Please consult the document to identify which groups you will peer evaluate! You will be provided with evaluation forms for the individual group members and the group as a whole that you evaluate! Please read the poems on which the groups present that you evaluate! WEDNESDAY‚ DECEMBER 3RD Presentation Group 3: Emily Dickinson‚ “Because I Could not Stop
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skills demonstrated/developed whilst working as a group 35 e.g. time management‚ organization‚ communication etc Reflection of role Identify personal role and skills within within group and group working interaction within a team‚ effective communication 20 or communication issues within the group‚ approach to the 25% Resolution of problems. Reflection of group Identify learning of the and individual range of
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many liked 101 Dalmatians only? How many liked Mickey Mouse only? Question 2: The table below shows the number of accidents each year at a particular road junction: a. Work out the mean‚ median and mode for the values above. b. A road safety group wants to get the council to make this junction safer. Which
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Jackson Bellinger “Turning Waste Heat into Power” Physicists at the University of Arizona have discovered a way to convert waste heat back into useable electricity‚ using molecular thermoelectricity. In addition to making many machines much more efficient‚ molecular thermoelectricity would make CFC’s not needed. This new technology makes it possible to convert heat into energy with no moving parts‚ and no pollution whatsoever. Charles Stafford‚ the associate professor of physics at the University
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Nitration of Methyl Benzoate Purpose: The purpose of this experiment was to synthesize methyl m-Nitrobenzoate from methyl benzoate‚ concentrated HNO3‚ and concentrated H2 SO4 by an electrophilic substitution reaction. The H2 SO4 and the HNO3 were initially combined to form nitronium ion which was then used as an electrophile in the reaction. Crystals that were collected after the formation of the methyl m-Nitrobenzoate were collected by vacuum filtration and the product was isolated and purified
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Chapter 2 21. An amino acid having the constitution shown has been isolated from horse chestnuts. It is configurationally related to L-proline and has the R configuration at C-3. Write a stereochemically correct representation for this compound. The addition of carbene by the cuprous chloride catalyzed the decomposition of diazomethane to 3‚4-dehydro-l-proline‚ which led to a combination of cis-3‚4-methylene-l-proline and trans-3‚4-methylene-l-proline in a proportion of 1:3.5. In addition‚ the
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