hydrogen substitution. However‚ this is not thermodynamically favoured because a sp3 hybridized carbon is generated‚ which disrupts the cyclic conjugation. In order to regenerate the aromatic ring‚ a proton is lost at the sp3 hybridized carbon. Thus‚ p-Nitroaniline can be prepared by means of electrophilic aromatic substitution. To begin‚ nitric acid needs to be activated as it has little electrophilic power. Thus‚ concentrated sulfuric acid is added to protonate the nitric acid. Dehydration produces
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of 86.9%). The percent yield after recrystallization‚ was 80.9%. INTRODUCTION The goal of this experiment was the synthesis of 3-nitrochalcone from 3-nitrobenzaldehyde and acetophenone as shown in Figure 1: Figure 1: Synthesis of 3-Nitrochalcone from 3-Nitrobenzaldehyde and Acetophenone Source: cnx.org The mechanism for the synthesis of 3-nitrochalcone is presented in Figure 2. The alpha carbon on the acetophenone is deprotonated‚ followed by the attack of the alpha carbon anion on the carbonyl
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Historical background & Development of the law of Criminal Evidence In criminal proceedings‚ the legal burden of proving any fact which is essential to the prosecution’s case rests upon and remains with the prosecution for the duration of the trial. Generally‚ the defendant in the proceedings will bear no legal burden at all in relation to the essential ingredients of the offence. The reasoning behind this is that all persons are entitled to a fair trial where the presumption of innocence is
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ACCOUNTING 505 SYNTHESIS |Key Features of a Synthesis | (1) It accurately reports information from the sources using different phrases and sentences; (2) It is organized in such a way that readers can immediately see where the information from the sources overlap;. (3) It makes sense of the sources and helps the reader understand them in greater depth. |The Background
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Statistical Quality Control Montgomery’s 6th edition Solutions for Chapter 06 Jan Rohlén jan.rohlen@hb.se Question 6.04 Sample No. Ri Xi 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 9 7 5 7 6 2 8 6 5 6 8 7 7 6 9 5 4 8 6 4 10 7.75 7.5 9 9.75 10.75 10.75 6.5 9 13.5 12.5 9.75 13.25 10.5 11 12.5 9.75 10.75 8.75 13.25 Table 1: Table 6E.4 1 LaTeX Typesetting by : Amirkiarash Kiani Jan Rohlén Statistical Quality Control Chapter 06 (a) R= Ri = 6.25 m Sample Size 4 X= A2 0.729 D3 0
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Wal-Mart’s Music Censorship Imagine Green Day just came up with a great album that everyone has been raving about. The excited fans decide to head over to the local Wal-Mart to grab an easily accessible copy of this album. Sadly‚ they find that Wal-Mart will not sell the album because Green Day refuses to self-censor their songs‚ which Wal-Mart demands of all artists. Wal-Mart also refuses to stock CDs with parental advisory stickers on them‚ although it should be the consumer’s choice on whether
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The average person is faced with thousands of issues every single day‚ and often they are recognized and handled‚ but other times there are some that are overlooked. Sleep debt‚ an issue that many do not even know exist‚ and yet are plagued by on it an everyday basis. When you skip a night of full rest‚ is it possible to catch up? Most people will simply attempt to return to a normal schedule‚ but yet they cannot shake the feeling of lethargy. This issue is the subject of many studies and investigations
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Loggerheads also modify habitats as a result of their foraging activities. The fragments of hard-shelled organisms that loggerheads consume are either discarded or ingested and later deposited with feces at a different location. By reducing the particle size of the shells‚ loggerhead turtles contribute to nutrient recycling in benthic ecosystems by increasing the rate of shell disintegration. Additionally‚ a foraging behavior called infaunal mining has a significant effect on substrate characteristics
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Explanatory Synthesis Essay Jessica Hall Ivy Bridge College of Tiffin University July 22‚ 2012 Explanatory Synthesis Essay – Draft 1 The ability to put others before oneself is a concept that a large majority of the world’s population cannot yet comprehend. Selflessness comes with a great deal of discipline and awareness of others. Buddhists‚ as well as a few other similar religions‚ have made it one of their highest priorities to relinquish their selfish desires. The ability to be aware
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Pat 1 Synthesis of 4-aryl-6-indolylpyridine-2-carbonitriles and evaluation of their biological activity Synthesis of 6-indolyl-4-aryl-3-cyanopyridine-2-one (1a-e) Employing the MCRs approach and microwave irradiation‚ an equimolar amounts of aromatic aldehyde‚ 3-acetylindole‚ ethyl cyanoacetate were reacted with excess of ammonium acetate in one-pot‚ reaction‚ under the microwave irradiation‚ afforded a novel series of 4-aryl-6-indolyl-nicotinonitrile-2-one derivatives 1a-e. Ethylene glycol was
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