Asymmetric Epoxidation of Dihydronaphthalene with a Synthesized Jacobsen’s Catalyst Justin Lindsey 12/08/96 Chem 250 GG Professor Tim Hoyt TA: Andrea Egans Abstract. 1‚2 diaminocyclohexane was reacted with L-(+)-tartaric acid to yield (R‚R)-1‚2-diaminocyclohexane mono-(+)-tartrate salt. The tartrate salt was then reacted with potassium carbonate and 3‚5-di-tert-butylsalicylaldehyde to yield (R‚R)-N‚N’-Bis(3‚5-di-tert-butylsalicylidene)-1‚2-cyclohexanediamine‚ which was then reacted with Mn(OAc)2*4H2O
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species Melipona quadrifasciata was obtained in May‚ 2013 in the city of Blumenau‚ SC‚ Brazil (26 ° 54’21.3 "S 49 ° 04’49.1 "W). In order to obtain a hydroalcoholic crude extract (HCE)‚ 284.3 grams of propolis were pulverized and macerated in 70% ethanol (m m-1)‚ left in a dark chamber for 7 days at room temperature‚ filtered in vacuum and taken to complete drying in a rotary evaporator with reduced pressure. In order to increase the yield of the extract‚ this extraction procedure was repeated 3 times
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distillation (distillation at a reduced pressure)‚ and steam distillation. The objective of the study is to differentiate simple from fractional distillation‚ separate the components of the alcohol beverage used‚ and to calculate the percentage of ethanol in the beverage. Simple and fractional distillation are the methods to be used since it is the most efficient to be used in this experiment. Since the experiment worked only on the two methods‚ the other two methods will not be studied. Methodology
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maltose-binding-protein‚ amylose affinity chromatography was performed. The amylose resin present in 20% ethanol was first diluted by adding 10 mL of 20 mM TrisHCl‚ pH 7.4‚ 0.2 M NaCl‚ 1 mM EDTA and centrifuged at 700 rpm for 5 minutes. After decanting the buffer‚ another 10 mL of TrisHCl‚ pH 7.4‚ 0.2 M NaCl‚ 1 mM EDTA was added to this resin solution and centrifuged at 700 rpm for another 5 minutes to further dilute the ethanol concentration in the resin. After the buffer was decanted again‚ the column was packed
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reactivity of its double bond‚ is readily transformed into many useful products Ethylene‚ because of the high reactivity of its double bond‚ can form many useful products‚ such as plastics (polyethylene). For example‚ ethene can react with water to form ethanol‚ with a H3PO4 catalyst at 300oC. Ethene can react with oxygen in the presence of an Ag catalyst and at 250oC‚ to form ethylene oxide‚ which is further treated with dilute acid solution to form ethylene glycol. Ethene can also react with oxygen‚ with
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Purpose- the Purpose of this lab is to synthesize Esters by combining Carboxylic Acid and Alcohols. In this lab we will synthesize and then detect the odour of Esters formed. Materials- Materials that will be used in this lab are as follows:- Ethanol 7. Acetic Acid Eye Protection 11. Test tube rack Procedure- Prepare a hot-water by half filling a 500-mL beaker with water and heating it carefully on a hot plate until it comes to a gentle boil. Number the test in the rack in order
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resources like vegetable oil and animal fats. Sweet Potatoes (Ipomea Batatas) are being engineered by North Carolina State University. Scientist are source of ethanol to help the U.S. in their need of fuel. This is the reasons why the researchers decided to make biodiesel out of sweet potato (ipomea batatas) peel to test its feasibility in producing ethanol. ii General problem 1. How much sweet potato peel is needed to produced certain amount of biodiesel 2. Does the biodiesel
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Galacturonic Acid Analysis (for Pectin Analysis) Defattening of Mango Peel Powder (Tunchaiyaphum et al.‚ 2013) 1. Weigh about 3 g sample and put into thimble of the soxhlet extractor. 2. Pour in 150 mL of absolute ethanol to the flask of the soxhlet extractor. 3. Extract at boiling temperature of ethanol for 4 hours. 4. Remove solid contents from the thimble. Set aside to dry. Acid Hydrolysis of MPP (Rehman et al.‚ 2004) 1. Mix defatted peel powder with water at pH 2.5 adjusted w/ 0.1 N H2SO4 with a substrate
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Crude drug A crude drug is any naturally occurring‚ unrefined substance derived from organic or inorganic sources such as plant‚ animal‚ bacteria‚ organs or whole organisms intended for use in the diagnosis‚ cure‚ mitigation‚ treatment‚ or prevention of disease in man or other animals. Crude drugs are unrefined medications in their raw or natural forms. Prior to the 1950s‚ every pharmacy student learned about crude drugs in pharmacognosy class. Pharmacognosy is the study of the proper horticulture
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This is the portion of the sugarcane juice which contains sugars other than sucrose (what is normally consumed) and a number of other organic compounds. One of the compounds formed during fermentation of molasses is ethanol. In addition to sugar‚ about 12 million litres of ethanol are produced annually at the two factories in Sevanagala and Pelwatta. Another by-product of the sugarcane industry is bagasse which could be used to generate electricity. In addition‚ animal feeds‚ bagasse based fiber
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