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2. (16 points) In each of the following pairs of reactions elimination competes with substitution. Write...
1. (16 points) In each of the following pairs of reactions elimination competes with substitution. Write...
1. (16 points) In each of the following pairs of reactions elimination competes with substitution. Write the starting material and all possible products of the reactions, don't write mechanistic part. Write "elimination is favored for reaction in which elimination products can be obtained in higher yield comparing to the yield of the elimination product/s in the second reaction. Provide the reason for such statement, reason is in reaction conditions. You can write an opposite statement to the previous one, you...
2. When (1R, 2R)-1-bromo-2-methylcyclohexane reacts with lithium methoxide in methanol, both substitution and elimination reactions occur...
2. When (1R, 2R)-1-bromo-2-methylcyclohexane reacts with lithium methoxide in methanol, both substitution and elimination reactions occur to produce three unique products. What are the structures of the three products produced by this reaction? sepenbare CHOLE сно CH3 3. When (R)-3-mesyl-3-ethyloctane reacts with potassium hydroxide in aqueous THF elimination occurs to produce three unique alkene products. What are the structures of the three products produced by this reaction? MsOCH.CH HOK THF/H20 4. When (S)-2-fluoro-2-iodobutane reacts with hydroxide ion in aqueous THF,...
Predict the substitution product(s) for each of the following reactions and mechanisms by which they are...
Predict the substitution product(s) for each of the following reactions and mechanisms by which they are formed. If no reaction is expected, write no (a) (R)-2-bromobutane with sodium iodide in acetone (b) (R)-3-bromo-3-methylhexane with H20 (c) trans-1-bromo-2-ethylcyclopentane with potassium ethoxide in ethanol (d) trans-1-bromo-3-methylcyclopentane with Nal in acetone 5. For the following set of compounds, predict the order of reactivity with sodium iodide in acetone solution (list them in increasing order of reactivity). C. D. 2-bromobutane 1-chlorobutane 2-chloro-3-methylbutane 2-bromo-2-methylpropane 1-bromobutane...
Chemistry 12A Substitution and Elimination Reactions 1. Provide complete curved-arrow mechanisms for the following transformations, Label...
Chemistry 12A Substitution and Elimination Reactions 1. Provide complete curved-arrow mechanisms for the following transformations, Label the overall mechanism as: E1, E2, S,2, or Sy1 and explain in 1 sentence WHY that mechanism is favored. Br OH OH Br кови Hао Br "ОН conc. H2SO4 "Он
CHEM 3401 PreLaboratory Assignment, Elimination Reactions of Alkyl Halides, day 2 Due at the beginning of...
CHEM 3401 PreLaboratory Assignment, Elimination Reactions of Alkyl Halides, day 2 Due at the beginning of the lab period. Reading Assignment from Zubrick, 9th ed.: Reflux, pp. 201-202; Elimination Reactions of Alkyl Halides Experiment, GSU Laboratory Manual 1. What purpose does the water in the Hempel column/condenser serve in the reflux setup? The purpose of the water in the Hemper column] ondenser is too cool vapors before they leave the system, which maintains volume and induces reaction 2. You are...
Elimination Reactions Prelab Date 1. Explain why we get a different product when we use bulky...
Elimination Reactions Prelab Date 1. Explain why we get a different product when we use bulky bases compared to smal bases. (3 pts) 2. If we start with 25.0 mL of 0.100 M sodium methoxide and 25.0 g of 2-bromobutane, what will be the theoretical yield of your product? (Use dimensional analysis/ Do not break up your steps/Read the beginning of your lab to guide you on how to do this problem). (3 pts) 3. How can one determine which...
need help with part c and d L euly butane 2-chloro-2-methylbutane 2-chloro-3-methylbutane 2-chlorobutane c) Draw a...
need help with part c and d
L euly butane 2-chloro-2-methylbutane 2-chloro-3-methylbutane 2-chlorobutane c) Draw a curved-arrow mechanism for the following reaction: - H2O Hạº, d) Label the following reactions as S1, S2, E1, E2, addition, or acid/base (2 pts, cach). i. Bromoethane becomes ethanol upon treatment with hydroxide ion. ii. 1-Methyl-1-cyclohexanol reacts with acid in water to form l-methylcyclohexene. iii. Propyne becomes propane in the presence of hydrogen and metal catalyst. iv. I-iodopropane reacts with potassium tert-butoxide. SN e)...
Write a balanced chemical reaction identify and label (or name) the base/nucleophile, the electrophile, and the...
Write a balanced chemical reaction identify and label (or name) the base/nucleophile, the electrophile, and the leaving group. Decide whether the reaction is a substitution or an elimination,, label the reaction as E or S. 2-chloro-3-methylbutane (15.0 mmol) was added to a solution of sodium ethoxide (15.0 mmol) in ethanol (50.0 mL) and heated to reflux for 1 h. The mixture was then cooled to room temperature, neutralized with saturated aqueous sodium bicarbonate (a weak base). 2-methyl-2-butene was isolated by...
Substitution v Elimination Exercise Work in pairs. Take one card of each color. For each: 1....
Substitution v Elimination Exercise Work in pairs. Take one card of each color. For each: 1. Draw the most likely product. 2. State the most likely mechanism. 3. What is the base/nucleophile (which is it in each) 4. Write a rate equation. 5. Draw the intermediate or transition state, as appropriate to your mechanism 6. Draw a reaction energy diagram to go with your mechanism. Hint: a different mechanism is favored for each color of cards
6. Write a balanced equation describing each of the following chemical reactions. (a) Solid potassium chlorate,...
6. Write a balanced equation describing each of the following chemical reactions. (a) Solid potassium chlorate, KClO3, decomposes to form solid potassium chloride and diatomic oxygen gas. (b) Solid aluminum metal reacts with solid diatomic iodine to form solid Al2I6. (c) When solid sodium chloride is added to aqueous sulfuric acid, hydrogen chloride gas and aqueous sodium sulfate are produced. (d) Aqueous solutions of phosphoric acid and potassium hydroxide react to produce aqueous potassium dihydrogen phosphate and liquid water.
1. (16 points) In each of the following pairs of reactions elimination competes with substitution. Write the starting material and all possible products of the reactions, don't write mechanistic part. Write "elimination is favored for reaction in which elimination products can be obtained in higher yield comparing to the yield of the elimination product/s in the second reaction. Provide the reason for such statement, reason is in reaction conditions. You can write an opposite statement to the previous one, you...
2. When (1R, 2R)-1-bromo-2-methylcyclohexane reacts with lithium methoxide in methanol, both substitution and elimination reactions occur to produce three unique products. What are the structures of the three products produced by this reaction? sepenbare CHOLE сно CH3 3. When (R)-3-mesyl-3-ethyloctane reacts with potassium hydroxide in aqueous THF elimination occurs to produce three unique alkene products. What are the structures of the three products produced by this reaction? MsOCH.CH HOK THF/H20 4. When (S)-2-fluoro-2-iodobutane reacts with hydroxide ion in aqueous THF,...
Predict the substitution product(s) for each of the following reactions and mechanisms by which they are formed. If no reaction is expected, write no (a) (R)-2-bromobutane with sodium iodide in acetone (b) (R)-3-bromo-3-methylhexane with H20 (c) trans-1-bromo-2-ethylcyclopentane with potassium ethoxide in ethanol (d) trans-1-bromo-3-methylcyclopentane with Nal in acetone 5. For the following set of compounds, predict the order of reactivity with sodium iodide in acetone solution (list them in increasing order of reactivity). C. D. 2-bromobutane 1-chlorobutane 2-chloro-3-methylbutane 2-bromo-2-methylpropane 1-bromobutane...
Chemistry 12A Substitution and Elimination Reactions 1. Provide complete curved-arrow mechanisms for the following transformations, Label the overall mechanism as: E1, E2, S,2, or Sy1 and explain in 1 sentence WHY that mechanism is favored. Br OH OH Br кови Hао Br "ОН conc. H2SO4 "Он
CHEM 3401 PreLaboratory Assignment, Elimination Reactions of Alkyl Halides, day 2 Due at the beginning of the lab period. Reading Assignment from Zubrick, 9th ed.: Reflux, pp. 201-202; Elimination Reactions of Alkyl Halides Experiment, GSU Laboratory Manual 1. What purpose does the water in the Hempel column/condenser serve in the reflux setup? The purpose of the water in the Hemper column] ondenser is too cool vapors before they leave the system, which maintains volume and induces reaction 2. You are...
Elimination Reactions Prelab Date 1. Explain why we get a different product when we use bulky bases compared to smal bases. (3 pts) 2. If we start with 25.0 mL of 0.100 M sodium methoxide and 25.0 g of 2-bromobutane, what will be the theoretical yield of your product? (Use dimensional analysis/ Do not break up your steps/Read the beginning of your lab to guide you on how to do this problem). (3 pts) 3. How can one determine which...
need help with part c and d
L euly butane 2-chloro-2-methylbutane 2-chloro-3-methylbutane 2-chlorobutane c) Draw a curved-arrow mechanism for the following reaction: - H2O Hạº, d) Label the following reactions as S1, S2, E1, E2, addition, or acid/base (2 pts, cach). i. Bromoethane becomes ethanol upon treatment with hydroxide ion. ii. 1-Methyl-1-cyclohexanol reacts with acid in water to form l-methylcyclohexene. iii. Propyne becomes propane in the presence of hydrogen and metal catalyst. iv. I-iodopropane reacts with potassium tert-butoxide. SN e)...
Substitution v Elimination Exercise Work in pairs. Take one card of each color. For each: 1. Draw the most likely product. 2. State the most likely mechanism. 3. What is the base/nucleophile (which is it in each) 4. Write a rate equation. 5. Draw the intermediate or transition state, as appropriate to your mechanism 6. Draw a reaction energy diagram to go with your mechanism. Hint: a different mechanism is favored for each color of cards
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