Y1315 Lab supporting staffs: YK Au / Kan Chan/Arnold Demonstrators: Dr. Samuel Lee‚ Alston Lee‚ Fu Wai Chung‚ Guo Shuai‚ Yuen On Ying‚ Sep 16 Tue Acetylation of α-D-glucopyranose (Expt 1) Sep 23 Tue Cis-1‚2‚3‚6-tetrahydro-4‚5-dimethylphthalic anhydride (Diels-alder reaction) (Expt 2) Sep 30 Tue Photochemical Reaction and Acid-catalyzed Rearrangement: Cycloaddition reactions (Expt.3‚ Part A) and Michael Addition (Expt 4‚ part A) Oct 7 Tue Michael Addition (Expt 4‚ part B) Oct 14 Tue Photochemical
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steps. The first step involves the acylation of aniline with maleic anhydride to give maleanilic acid 1. I n the second step maleanilic acid undergoes the Michael addition of aniline and cyclization to yield I-phenyl-3-pl~enylaminopyrrolidine-2‚5dione 2 (Method A). Compound 2 can also he obtained in one step by using commercially available maleanilic acid (Merck) or‚ albeit in slightly lower overall yield‚ by refluxing maleic anhydride and aniline in 12molar ratio in acetic acid (Method B) (Fig
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PRE-LAB ASSIGNMENT 1. Maleic acid is the cis version and fumaric acis is the trans version of butenedioic acid. 2. 3. See attached paper. 4. Maleic anhydride is the compound that crystalizes in part A in the experiment. 5. HCl acts as a catalyst to break one of the carbonyl group in the maleic acid which rotates the structure to form a trans structure of the butonal acid which is the fumaric acid. And it does so by donating its protons. 6. Maleic acid Chronic effects: mutagenic
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Good morning everybody and thank you all for coming here today. It is my honour here to talk about how to get the best out of your secondary education. As you probably know‚ schooling is a very important and decisive stage of life‚ so you should make the best out of your school life. First of all‚ you are encouraged to keep academic work and extra-curricular activities in balance. More importantly‚ the method of learning should be taken into consideration. To begin with‚ you should pay full
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Stereochemistry of Butenedioic Acid Objective: To study the interconversion of two geometric isomers‚ maleic acid (cis isomer) to fumaric acid (trans isomers)‚ the differences in physical properties between this pair of cis-trans isomers and determine the stereochemistry of addition of bromine to butenedioic acid. Chemicals and Apparatus: 2 grams of maleic acid‚ 10 cm3 of concentrated hydrochloric acid‚ 10 cm3 of bromine water[1]‚ one 50 cm3 beaker‚ one 100 cm3 beaker‚ one 250 cm3
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Groeninckx G (2001). 43. Paul S‚ Puja N‚ Rajive G (2003). Molecules 8:374 44 Carvalho LH‚ Pothen L‚ Kala S‚ James B (2000). Frollini ˜ 45. Wang B (2004). MSc. Thesis. University of Saskatchewan 46 48. Sreekala MS‚ Kumaran MG‚ Joseph S‚ Jacob M‚ Thomas S (2000) 49. Sreekala MS‚ Kumaran MG‚ Thomas S (2002). Compos A: Appl Sci Manuf 33:763 50. Li X‚ Panigrahi S‚ Tabil LG‚ Crerar WJ (2004). 2004 CSAE/ ASAE Annual Intersectional Meeting‚ Winnipeg‚ Canada‚
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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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Section 2: Composition and Information on Ingredients Composition: Name CAS # % by Weight Sulfuric acid 7664-93-9 95 - 98 Toxicological Data on Ingredients: Sulfuric acid: ORAL (LD50): Acute: 2140 mg/kg [Rat.]. VAPOR (LC50): Acute: 510 mg/m 2 hours [Rat]. 320 mg/m 2 hours [Mouse]. Section 3: Hazards Identification Potential Acute Health Effects: Very hazardous in case of skin contact (corrosive‚ irritant‚ permeator)‚ of eye contact (irritant‚ corrosive)‚ of ingestion‚ of
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non-water soluble polymer called polydimethylsiloxane is added to make the hold last a bit longer (the polyvinylpyrrolidine is water soluble). Other polymers used in plastic-based hairsprays are copolymers with vinyl acetate andcopolymers with maleic anhydride .[1] Some hairsprays use natural polymers and solvents like vegetable gums dissolved in alcohol. One popular ingredient is gum arabic is made from the sap of certain trees that grow in the Sudan. Gum tragacanth is another herbal gum that is used
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Lab 2B: Diels-Alder Reaction Zhouxiang Xu TA: Bhumasamudram Jagadish Experiment performed: Jan 28th‚ 2014 Report Due: Feb 10th 2014 Result: For the Diels-Alder reaction: Maleic acid is 0.002 mol 2‚3-dimethyl-1‚3-butadiene is 0.002 mol The theoretical yield is 0.36g Cycloaddition product is 0.358g (maybe it was not completely dry when I weighted.) The % yield of Diels-Alder reaction is 99.4% For the hydrolysis: The theoretical yield of hydrolysis is 0.396g The
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