Experiment 3: Wittig Reaction Introduction This experiment performs a modified Wittig reaction using a phosphorus-containing Hornes-Emmons-Wittig reagent to generate an enolate anion of trimethyl phosphonoacetate instead of a phosphorus ylide. The methyl trans-4-methoxy cinnamate produced is then analyzed using melting point and 1H NMR spectroscopy. Theory The Wittig reaction prepares alkenes from carbonyl compounds by attacking a phosphorus ylide with a nucleophilic carbon atom stabilized by
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The Sequence of Chemical Reactions Drew Selfridge Dave Allen‚ Lab partner Instructor Yang February 11‚ 1997 INTRODUCTION This experiment was to recover the most amount of copper after it is subjected to a sequence of reactions. The copper is originally in solid form‚ but the reactions will turn it into free Cu+2 ions floating in solution. The ions will then be regrouped to form solid copper once again. During this process‚ however‚ some of the Cu+2 ions may be lost. The copper will subjected
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Ashley S. POLS 136 Essay 1 October 11‚ 2013 Ideas and Rights Rule of Law- What is it? ( “Rule of Law”‚ The Gale Group) a.i) The rule of law is a system in which the following four universal principles are upheld: a.ii) The government and its officials and agents as well as individuals and private entities are accountable under the law. a.iii) The laws are clear‚ publicized‚ stable and just‚ are applied evenly‚ and protect fundamental rights‚ including the security of persons and property
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Reflection – Leadership That Gets Results The first comment before the article starts is vastly important. Most effective leaders use a variety of leadership styles in order to achieve maximum performance from organizations‚ teams‚ and individuals. The ability to act as a chameleon as a leader has huge benefits and allows you to tackle many different types of leadership situations. In order to achieve the best results a leader must be able to use many different leadership styles to accomplish
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that’s right because he can’t solve some problem if we didn’t help him he can’t solve it by his own or without helping of others because we know that he is a man like us he need help to solve every struggle that comes. The President said that the result of last election where 9 out of 12 of the candidates he endorsed‚ which he referred to as “Mga Kasangga “occupied the highest 9 seats in the senate‚ a testament that his bosses 9 (filipino) agree in “tuwid na daan” His accomplishment for past three
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Santo Tomas ABSTRACT The experiment was executed in order to purify compounds through recrystallization. Recrystallization is the primary used operation for purifying solid organic compounds that differ in solubility at different temperature. It is a process of dissolving the solid to be crystallized in a hot solvent mixture and then cooling the solution slowly. The objective of the experiment is to purify crude acetanilide product. At the beginning of the experiment‚ materials and solutions needed
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The hypothesis was rejected in this experiment‚ based on the results. The results were much different than hypothesized before the experiment. It was hypothesized that the lower concentrations of CLR‚ Jar E and Jar D‚ would be healthier and more likely to reproduce than the higher concentrations of CLR‚ Jar B and C. However‚ as shown in the actual results‚ Jar E and D with the lower concentrations of CLR died quicker than Jar B and C. The CLR and water solutions acted as a fertilizer‚ so the greater
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Recreation » Tour & Travel » Question i want a essay on traffic rules Asked in Travel at 4:44 PM on December 31‚ 2007 Tags: essay‚ traffic‚ rules ! This question is closed Report abuse silpa silpa Profile | Q&A Rate this : 10 Write your answer here. And keep checking whether it’s been chosen as the Best Answer. * Enter Answer Please enter answer before submitting. Your mail ID: Enter your email * We don’t SPAM your inbox Help us avoid Spam: refresh image Enter characters as
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Design of Experiments (DOE) Tutorial Design of Experiments (DOE) techniques enables designers to determine simultaneously the individual and interactive effects of many factors that could affect the output results in any design. DOE also provides a full insight of interaction between design elements; therefore‚ it helps turn any standard design into a robust one. Simply put‚ DOE helps to pin point the sensitive parts and sensitive areas in designs that cause problems in Yield. Designers are then
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2.3. Range of Results (Scope and Segmentation) What does a comprehensive set of Customer Results mean for your organisation? The answer is directly related to the range of Customers that you serve and the size and nature of your portfolio of products and services. An incomplete set of Customer Results can have a dramatic impact on the value of the information collected for informing improvements‚ future strategy and business results. There are three potential mistakes: * To assume that
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