The Grignard Synthesis of Triphenylmethanol Organic Chemistry Lab II March 19‚ 2012 Abstract The purpose of this experiment was to synthesize the Grignard reagent‚ phenyl magnesium bromide‚ and then use the manufactured Grignard reagent to synthesize the alcohol‚ triphenylmethanol‚ by reacting with benzophenone and protonation by H3O+. The triphenylmethanol was purified by recrystallization. The melting point‚ Infrared Spectroscopy‚ 13C NMR‚ and 1H NMR were used to characterize and confirm
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INTERNATIONALE PHARMACEUTICA SCIENCIA | Jan-March 2011 | Vol. 1 | Issue 1 | Available online http://www.ipharmsciencia.com ©2011 IPS REVIEW ARTICLE Phytochemical screening and Extraction: A Review ABSTRACT Plants are a source of large amount of drugs comprising to different groups such as antispasmodics‚ emetics‚ anti-cancer‚ antimicrobials etc. A large number of the plants are claimed to possess the antibiotic properties in the traditional system and are also used extensively by the tribal people
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The reaction mixture was cooled‚ poured onto crushed (100 ml) ice . The solid was filtered‚ washed with water‚ dried and crystallized from methanol‚ m.p. 180oC‚ 80% yield. Analysis calculated for C23H14Br2Cl2N4O3; Calcd.: %C‚ 44.19; H‚ 2.26; N‚ 8.96‚ Found: % C‚ 44.15; H‚ 2.24; N‚ 8.64. IR: υmax./cm-1 3300 (NH)‚ 3020 (C-H aromatic)‚ 1760 (C=O)‚ 1720 (C=O)‚ 1650 (C=N) and at 1610 (C=C) . 1H-NMR
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Biodiesel It refers to a vegetable oil- or animal fat-based diesel fuel consisting of long-chain alkyl (methyl‚ propyl or ethyl) esters. Biodiesel is typically made by chemically reacting lipids (e.g.‚ vegetable oil‚ animal fat (tallow[1][2])) with an alcohol producing fatty acid esters. Biodiesel is meant to be used in standard diesel engines and is thus distinct from the vegetable and waste oils used to fuel converted diesel engines. Biodiesel can be used alone‚ or blended with petro diesel
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the structure below). What base sequence change such a mispairing would cause? [pic] 4. (4 pts) Methanol (wood alcohol) is highly toxic because it is converted to formaldehyde in a reaction catalyzed by the enzyme alcohol dehydrogenase: NAD+ + methanol → NADH + H+ + formaldehyde Part of the medical treatment for methanol poisoning is to administer ethanol (ethyl alcohol) in amounts large enough to cause intoxication under normal circumstances. Explain
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chemical equation for the reaction by its molar mass. Complete the table below‚ using information represented in the chemical equation for the combustion of methanol‚ an alcohol. methanol oxygen → carbon dioxide water 2CH3OH(l) 3O2 (g) → 2CO2(g) 4H2O(g) Substance Molar Mass (g/mol) Number of Molecules Number of Moles (mol) Mass (g) 6. Methanol 32.05 2 2 64.1 7. Oxygen gas 32.00 3 3 96 8. Carbon dioxide 44.01 2 2 88.02 9. Water 18.02 4 4 72.08 10. What are the reactants? _______methanol
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Exp.11) Identification of unknown ketones. Introduction: Given five samples of a known ketone derivative‚ the purpose of this experiment is to identify which unknown ketone derivative corresponds to the five known samples. In other words‚ using specific methods of compound detection‚ it is possible to match an unknown compound with a known compound because similar compounds will display similar characteristics. In this experiment‚ identification of the unknown ketone is accomplished through thin
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Observation: The crystals started to form when added 2 g of crushed ice. The addition of hot methanol dissociated the crystals. The crystals reappeared when cooled down in the ice bath. The IR test was performed. Data‚ Analysis and Discussion: 3 ml conical vial 19.9115 g Crushed ice 2 g Methyl benzoate .210 ml Cold water 1 ml 3 ml conical vial + Methyl benzoate 20.321 g Ice-cold methanol .3 ml Methyl benzoate 0.4095 g Crude product 0.6981 g Sulfuric acid (1st added) .50 ml
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was to create and obtain pure acetaminophen. p-aminophenol and acetic anhydride were used to create acetaminophen and acetic acid. The acetic acid mixed with acetaminophen created an impure sample‚ which was purified through the addition of a water/methanol solution. The percent recovery of acetaminophen from the impure sample to the pure sample was 76%. The melting point of the pure sample was 167C - 169C. Introduction: Formulation of acetaminophen involves treating an amine with an acid anhydride
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Petroliam Nasional Berhad (PETRONAS) - SWOT Analysis Overview Petroliam Nasional Berhad (Petronas) is Malaysia ’s national petroleum company. Over the years‚ it has become a fully-integrated oil and gas corporation with operations in more than 30 countries worldwide. It is ranked among Fortune Global 500’s largest corporations in the world. The company delivered another record performance for the fiscal year ended March‚ 2008. Its strong and diversified base of upstream assets gives the company
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