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- Using your reaction roadmap as a guide, show how to convert ethylene into 1-butene. All of the carbon atoms of the target molecule must be derived from ethylene. Show all intermediate molecules synthesized along the way.How to set-up a separatory funnel? Please narrate the process in 5 sentences.You are employed as a coop student at the Drug and Alcohol Testing Association of Canada (DATAC) developing analytical tests for sports doping agents. You are asked to prepare a procedure for the extraction of methylphenidate, the active compound in Ritalin, from urine samples (consider them as simple aqueous layers, you do not need to consider other components!). The goal of the procedure is to extract the methylphenidate into an organic layer which will then be evaporated, and the residue will be tested for the drug.Your colleague is helping you develop the urine test. They suggest that the urine should be adjusted to a pH above 7 before extracting with the organic solvent. Why is this necessary? Support your explanation with a full arrow-pushing mechanism for the reaction that would occur if the pH was below 7. Include all formal charges, intermediates (if applicable) and products.
- 1015MSC Chemistry of Biological Systems II 2021 2. What kind of results do you expect to see when the following compounds are mixed together with the given test solution? Indicate positive or negative in the table below. (a) with 2,4-dinitrophenylhydrazine (b) with Benedict's reagent (c) with lodoform reagent CH3 (d) with Tollen's reagentYou are employed as a coop student at the Drug and Alcohol Testing Association of Canada (DATAC) developing analytical tests for sports doping agents. You are asked to prepare a procedure for the extraction of methylphenidate, the active compound in Ritalin, from urine samples (consider them as simple aqueous layers, you do not need to consider other components!). The goal of the procedure is to extract the methylphenidate into an organic layer which will then be evaporated, and the residue will be tested for the drug.You find that methylphenidate is highly soluble in 2-methyltetrahydrofuran, a bio-renewable solvent. Draw the structure of 2-methyltetrahydrofuran and give two reasons why it is a good solvent choice for liquid-liquid extraction.A wittig reaction experiment: Week 1 -》 preparation of phosphonium salt Materials : triphenylphosphine (5.3g),methyl Bromoacetate 3.36g (2.1ml) , ethanol 30ml . The yield obtained was 8.93g . Calculate the percentage yield Week 2 -》 Formation of the tlide and wittig reaction Materials :Phosphonium salt (5g), napthyl-2- carboxwaldehyde( 2.65g), 20 ml of water and 5 nl of Nahco3. Yield obtained was 0.51g .Calculate the percentage yield Week 3: Solvent free wittig reaction Materials: Benzyltriphenylphosphonium chloride (0.5g ), 4 - Bromoabenzaldehyde (0.24g), Potassium phosphate (tribasi c) 0.275g .The yield obtained was 1.21g. Calculate the percentage yield
- To determine the purity of a synthetic preparation of methylethyl ketone, C4H8O, it was reacted with hydroxylamine hydrochloride, liberating HCl (reaction: NH2OH.HCl + C4H8O -> C4H9NO + H20 + HCl). In a typical analysis a 3.00-mL sample was diluted to 50.00 mL and treated with an excess of hydroxylamine hydrochloride. The liberated HCl was titrated with 1.2149 M NaOH, requiring 35 mL to reach the end point. A. Write the acid base reaction involved in the titration. B. Report the percent purity of the sample given that the density of methylethyl ketone is 0.805 g/mL.Write an equation for the acid-base reaction between 2,4-pentanedione and sodium eth- oxide and calculate its equilibrium constant, K. The pK, of 2,4-pentanedione is 9; that of ethanol is 15.9. CH,CCHÖCH, + CH,CH,O Na* H 2,4-Pentanedione Sodium ethoxideFor the reaction shown below, 582 mg of 4-chlorophenol, 798 mg of benzyl bromide, and excess sodium hydroxide are used to obtain 847 mg of 4-chlorophenyl benzyl ether. What is the percent yield of 4-chlorophenyl benzyl ether? 4-chlorophenol MW = 129 g/mol; benzyl bromide MW = 171 g/mol; sodium hydroxide MW = 40.0 g/mol; 4-chlorophenyl benzyl ether MW = 219 g/mol
- Give the reagents, the number of equivalents, and the by-products required to give the specific products in good yield1. A compound of molecular formula C5H100 forms a yellow precipitate with reagent and a yellow precipitate with reagents for the iodoform test. 2,4-dinitrophenylhydrazine a) Draw the structural formulae on a piece of paper, take a picture of them and upload the image below. b) Name the two (2) compounds that fit these tests.Question 1 You are employed as a co-op student at the Drug and Alcohol Testing Association of Canada (DATAC) developing analytical tests for sports doping agents. You are asked to prepare a procedure for the extraction of methylphenidate, the active compound in Ritalin, from urine samples (consider them as simple aqueous layers, you do not need to consider other components!). The goal of the procedure is to extract the methylphenidate into an organic layer which will then be evaporated and the residue will be tested for the drug. You find that methylphenidate is highly soluble in 2-methyltetrahydrofuran, a bio-renewable solvent. Draw the structure of 2-methyltetrahydrofuran and give two reasons why it is a good solvent choice for liquid-liquid extraction. (Please find the image attached below to help you with this question) Question 2 (cont. from scenario 1). Your colleague is helping you develop the urine test. They suggest that the urine should be adjusted to a pH above 7 before…