(NaOCl) in acetic acid mixture was used to oxidize emdo-borneol (an alcohol) to camphor (a ketone). The product would then be purified by sublimation and then be analyzed by Infrared spectroscopy and melting point test. Procedure and ObservationsPlease refer to the lab manual and the carbon copy attached. Data and CalculationsWeight of endo-borneol = 0.2013gNo of moles of endo-borneol = 0.2013g/154.25g mol-1 = 1. 305mmolSince one mole of endo-borneol should give one mole of camphorTheoretical yield of
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Introduction: Borneol (FIGURE-1)‚ first reported and published in the Tang Bencao in 659 A.D.‚ is often used in drug treatment‚ especially in Chinese drugs. It is helpful in opening obstruction of orifices‚ heat syndromes and pain releasing (Dharmananda). Nowadays artificially synthesized borneol‚ a mixture of borneol and isoborneol (FIGURE-2)‚ becomes more popular than pure natural borneol because of the lower cost in drug production. However‚ isoborneol is more toxic than borneol and thus is not
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Khoa Kirk Hoang OCHEM 262 Lab: Exp 35- Oxidation + Reduction Tablular Data Pre-Weighted Flask | Product + Flask | Product | % Yield | 5.36g | 5.401g | 0.041g | 41% | (60-70% = Acceptable) Actual Melting Point | Experimental Melting Point | 212C | 199.8 | ------------------------------------------------- (10C-15C variations acceptable) Reasons %yield: A reason that our percent yield is lower then what is acceptable can be due to various reasons. First‚ the amount of product we
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have discussed in lecture called Oxone ®. Oxone is a persulfate mix that reacts with acetone to produce dimethyldioxirane. Procedure: Oxone reaction Dissolve 0.40 g oxone ® in 2.0 mL of water by shaking vigorously in a sealed vial. (Caution! Be sure the vial is sealed because oxone is a strong oxidizer.) Dissolve 50 L of cyclohexene in 2.0 mL of acetone in a small Erlenmeyer flask. Cool the cyclohexene solution in an icebath‚ then add the oxone solution dropwise over 5 minutes
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transferred from a peroxy acid to the carbon=carbon double bond thus forming an epoxide. Scheme 1. Oxone Epoxidation. Scheme 2. mCPBA Epoxidation. The percent yield for the Oxone epoxidation reaction was 65% yield and the mCPBA epoxidation reaction was 70% yield. Oxone is the greener alternative because using mCPBA is twice as expensive as Oxone and leaves behind the epoxide plus m-chlorobenzoic acid while Oxone creates non-toxic byproducts and recycles acetone in the epoxidation reaction. Introduction
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Synthesis of Phenols You can prepare phenols in large quantities by the pyrolysis of the sodium salt of benzene sulfonic acid‚ by the Dow process‚ and by the air oxidation of cumene. Each of these processes is described below. You can also prepare small amounts of phenol by the peroxide oxidation of phenylboronic acid and the hydrolysis of diazonium salts. Pyrolysis of sodium benzene sulfonate In this process‚ benzene sulfonic acid is reacted with aqueous sodium hydroxide. The resulting salt
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Title : reduction of camphor to isoborneol Hend Altajjar Date: 01\30\2015 disk no. 116 lab report experiment procedure I scaled up 0.120 g of camphor ‚ the I added 1.0 ml of methanol in a 10-ml Erlenmeyer flask. I stirred with a glass stirring rod until the camphor has dissolved. Then I
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Deterioration occurs because of some factors that give an impact to the archival materials. The factors are divided into two groups which is inherent factor and external factor. Compare to external factor‚ inherent factor is the biggest responsible for deterioration of archival materials. According to M.C. Onwubiko‚ the main factor in inherent factor is acidity that contain in the paper itself or from the atmosphere. The major causes of deterioration of paper materials in acidity. At the earlier
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Quiz #1 Attempt 1 Written: Jul 7‚ 2012 9:48 AM - Jul 7‚ 2012 9:50 AM Submission View Your quiz has been submitted successfully. Question 1 1 / 1 point At what time do you have to complete your online prelab assignment to be allowed to participate in the lab? Question options: A week before the lab Day before the lab at 10 pm The morning of lab day at 8 am One hour before the lab Question 2 1 / 1 point Which materials/chemicals belong in the desiccator? Question options: Drying
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The Open Mineral Processing Journal‚ 2011‚ 4‚ 25-44 25 Open Access Flotation Frothers: Review of Their Classifications‚ Properties and Preparation Hamid Khoshdast* and Abbas Sam Department of Mining Engineering‚ Faculty of Engineering‚ Shahid Bahonar University‚ 76169133‚ Kerman‚ Iran Abstract: The importance of frothers in flotation is widely acknowledged‚ particularly in terms of their role with respect to bubble size‚ and the stability and mobility of the froth phase. These factors
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