The purpose of the experiment was to perform an electrophilic addition reaction by the bromination of cinnamic acid. The product of this reaction is 3-Phenyl-2‚3-dibromo propionic acid‚ which is purified by recrystallization. Cinnamic acid (3-phenylprop-2-enoic acid) is an unsaturated carboxylic acid. The electron rich π cloud (see Figure 1) in the double bond of this structure is nucleophilic and can be considered a Lewis base. It can therefore be saturated by the addition of a halogen to the double
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Bromination of trans- Stilbene to form 1‚2- Dibromo- 1‚2-diphenylethane Abstract 1‚2-dibromo-1‚2-diphenylethane was produced by the bromination of trans-stilbene through the addition of hydrobromic acid (HBr) and hydrogen peroxide (H2O2). This experiment was a greener bromination of stilbene because bromine was generated in situ and ethanol was used as the solvent. The melting point (243.30°C)‚ mass (.427g)‚ and percent yield (45.54) of the crystals were recorded. The FTIR
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Electrophilic Aromatic Substitution: Bromination of Aromatic Compounds Introduction: The experiment focuses on finding out what kind of activating effects that four different substituents will have on an aromatic benzene ring. The substituents being tested are aniline‚ anisole‚ acetamide (acetanilide)‚ and phenol. All four of these groups are either para or ortho activating. Bromination is the reaction that will be carried out. The melting point ranges of the final products will be taken in order
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“THE HUNTING SNAKE” Sun-warmed in this late season’s grace under the autumn’s gentlest sky we walked‚ and froze half-through a pace. The great black snake went reeling by. Head-down‚ tongue-flickering on the trail he quested through the parting grass; sun glazed his curves of diamond scale and we lost breath to watch him pass. What track he followed‚ what small food fled living from his fierce intent‚ we scarcely thought; still as we stood our eyes went with him as he went. Cold
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DIFFERENT REACTION WILL YIELDS TO A CONCLUSION OF WHAT IS/ARE THE FACTOR/S OF ELECTROPHILIC SUBSTITUTION ON AN ORGANIC COMPOUND – AROMATIC COMPOUNDS. There are three experiments in this chapter of the laboratory. First is the substitution by bromination. Second is the solvent effect which is dealing in the nature of the solvent. And third is the temperature test. Having this division in the experiment one‚ we can now conclude that substituent in substitution‚ the nature of the solvent polar or
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substitution at the 4-position over the 2-positions which it shields. Aniline is the simplest aromatic amine and is synthesised by first nitrating benzene using a concentrated mixture of nitric acid and sulphuric acid to give nitrobenzene which is then hydrogenated in the presence of a nickel catalyst to give the final product. Aniline undergoes very readily electrophilic substitution reactions as the aromatic ring of aniline is very electron
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Topic Approaching Case Studies Applying Management and Technical Theories‚ Functions & Tools (Case Studies 2) Manpower Planning (Case Studies 3) Restaurant and Kitchen issues (Case Studies 4) Page 1 2 3 4 5 Room Division Issues (Case Studies 5) 6 Sales & Marketing functions (Case Studies 6) 7 Management functions (Case Studies 7) 8 9 Purchase & Procurement functions (Case Studies 8) 10 Facilities Management function (Case Studies 9) 11 Applying Management
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Studies serve for delight‚ for ornament‚ and for ability. Their chief use for delight‚ is in privateness and retiring; for ornament‚ is in discourse; and for ability‚ is in the judgment‚ and disposition of business. For expert men can execute‚ and perhaps judge of particulars‚ one by one; but the general counsels‚ and the plots and marshalling of affairs‚ come best‚ from those that are learned. To spend too much time in studies is sloth; to use them too much for ornament‚ is affectation; to
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NEW school year is about to unfold! With the goal of producing globally competitive education‚ the Department of Education (DepED) has recently rolled out its collaborative‚ planned educational reform - the K + 12 Program. of Education (DepED) has recently rolled out its collaborative‚ planned educational reform - the K + 12 Program. As presented‚ time-tested strategies of experts in the field were integrated‚ mission-driven initiatives of As presented‚ time-tested strategies of experts in the field
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condition. Besides that‚ we will work in a good working condition and working atmosphere‚ so it is good for us to work well. What’s more is that we will have more opportunities to be promoted. For examples‚ we have training courses or we can go abroad to study to help our companies be more developed. In sum up‚ we will have many pros when we work in foreign companies. Advantages of travelling by plane Nowadays‚ people can travel by plane‚ train or ship and car. However‚ travelling by plane‚ we will have
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