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a) Fill in the missing diene that would lead to this isomer as the thermodynamic, but...
3 (15 marks). Draw a reasonable mechanism that accounts for the formation of the unexpected product...
3 (15 marks). Draw a reasonable mechanism that accounts for the formation of the unexpected product shown below. Use curved arrows to show the movement of electrons and show the structures of all intermediates. Do not draw the structures of transition states. Do not include stereochemistry. Be sure to include formal charges and lone pairs of electrons where appropriate. OH HCI ether
answer all questions 5. Fill in the missing structures (products or reagents, including stereochemistry, if relevant)...
answer all questions
5. Fill in the missing structures (products or reagents, including stereochemistry, if relevant) and specify the most likely mechanism (SN1, S2, E1, E2) for formation of the product you have drawn. If a mixture will occur,show the major products. CH,ONa Сн,он нсулснэ H₃C Br HO H2O/acetone H₃C LIOH CH₂ H₂c a DMF 6. For the series shown below, label the most stable alkene, and the least stable alkene. CHE CH, CHE CH, -CH3
1. Fill in the missing product. If more than one product is expected, label which is...
1. Fill in the missing product. If more than one product is expected, label which is the major product and which are minor. Show stereochemistry where important. If you draw more structures than your answer, circle your final answer. (4 pts. each) а. HBr H202, light 44 b NaBr methanol low temperature Нс с. ОН excess Н-СrO, ОН owing tea 2 Show how you could synthesize the following compound from the given starting material. More than one step is required....
tion 5 continued) c. Anthracene is known to act as the diene in Diels-Alder read as...
tion 5 continued) c. Anthracene is known to act as the diene in Diels-Alder read as maleic anhydride as shown below. Draw the str reaction and draw a reasonable mechanism illustrating its comma explanation for the observed regioselectivity. he diene in Diels-Alder reactions with dienophiles such s shown below. Draw the structure of the major product of this nechanism illustrating its formation. Give a brief [4 marks) Propose a detailed mechanism for the following two transformations. Use curved arrows to...
heat two products HBr ether 4- KMnO4 H30 9. Carry out the transformation below. More than...
heat two products HBr ether 4- KMnO4 H30 9. Carry out the transformation below. More than one step will be required. Use any reagents you need. Show all reagents and intermediate structures. (4 points) -OH Br 12. Show the kinetic and thermodynamic product formed in the reaction of 1,3-dibutene with Brz and draw an energy diagram for both products. Show both products on the same graph with energy on the Y axis and reaction coordinates on the X axis. (4...
Show lone pairs on all appropriate atoms and the proper flow of electrons. (1) Mechanism #1:...
Show lone pairs on all appropriate atoms and the proper flow of electrons. (1) Mechanism #1: • Predict the products of the following reaction under different temperature conditions. • Show the mechanism for how the two products are formed at different temperatures (include resonance structures if appropriate). • Label the kinetic product and the thermodynamic product. (5 points) -80 °C + HBr 40 °C (2) Predict the product and show the complete mechanism for the following reaction. • Make sure...
5:43 PM Thu Oct 31 29% Chem2542 Assignment-6.doc 1. Provide the structure of diene and dienophile...
5:43 PM Thu Oct 31 29% Chem2542 Assignment-6.doc 1. Provide the structure of diene and dienophile required for the synthesis of the following compound via Diels-Alder reaction. Ph сно сно 2. The following a,b-unsaturated ketone can react with nucleophilic reagents to yield 1,2-addition as well as 1,4-addition (conjugate addition) products depending on the nucleophilic reagent. Provide the structure of the major primary 1,2-addition or 1,4 addition product formed in each reaction 1. CH,MgCI 2. HC 1. LIAIH 2. HC 1....
12. Show the kinetic and thermodynamic product formed in the reaction of 1,3-dibutene with Brz and...
12. Show the kinetic and thermodynamic product formed in the reaction of 1,3-dibutene with Brz and draw an energy diagram for both products. Show both products on the same graph with energy on the Y axis and reaction coordinates on the X axis. (4 points) Br2 ether buta-1,3-diene 11. Show the product and use arrows to show the mechanism for the Nucleophilic Aromatic Substitution Reaction below. Assume benzyne is an intermediate. Just write B: to represent a strong base reacting...
3. Fill in the reagents or products for the following reactions. Note some boxes will require...
3. Fill in the reagents or products for the following reactions. Note some boxes will require two or three reagents in separate steps; list them as 1, 2, and 3. (2 points) 1. MeONa/MeOH 2. HCI +/ H2N Br 4. Using another sheet of paper, provide a reasonable reaction mechanism for the following transformation, starting with enamine generation (Carbonyls 2) and subsequent alkylation and hydrolysis (Carbonyls 3). Please write neatly and show all arrows, resonance structures, tetrahedral intermediates, and charges....
1. For each of the following structures, please fill in the missing information below or- Cl...
1. For each of the following structures, please fill in the missing information below or- Cl Molecular Formula:R_ Molecular Formula: DBE:_ DBE: 2. Given the reaction below, answer the following questions. Br HBr As the above reaction progresses to completion, what peak in the IR would you expect to disappear? Whereabout is the peak located in cm? a. b. Why does the M+1 peak NOT change from reactant to product? c. How many peaks (not the splitting pattern, just the...
3 (15 marks). Draw a reasonable mechanism that accounts for the formation of the unexpected product shown below. Use curved arrows to show the movement of electrons and show the structures of all intermediates. Do not draw the structures of transition states. Do not include stereochemistry. Be sure to include formal charges and lone pairs of electrons where appropriate. OH HCI ether
answer all questions
5. Fill in the missing structures (products or reagents, including stereochemistry, if relevant) and specify the most likely mechanism (SN1, S2, E1, E2) for formation of the product you have drawn. If a mixture will occur,show the major products. CH,ONa Сн,он нсулснэ H₃C Br HO H2O/acetone H₃C LIOH CH₂ H₂c a DMF 6. For the series shown below, label the most stable alkene, and the least stable alkene. CHE CH, CHE CH, -CH3
1. Fill in the missing product. If more than one product is expected, label which is the major product and which are minor. Show stereochemistry where important. If you draw more structures than your answer, circle your final answer. (4 pts. each) а. HBr H202, light 44 b NaBr methanol low temperature Нс с. ОН excess Н-СrO, ОН owing tea 2 Show how you could synthesize the following compound from the given starting material. More than one step is required....
tion 5 continued) c. Anthracene is known to act as the diene in Diels-Alder read as maleic anhydride as shown below. Draw the str reaction and draw a reasonable mechanism illustrating its comma explanation for the observed regioselectivity. he diene in Diels-Alder reactions with dienophiles such s shown below. Draw the structure of the major product of this nechanism illustrating its formation. Give a brief [4 marks) Propose a detailed mechanism for the following two transformations. Use curved arrows to...
heat two products HBr ether 4- KMnO4 H30 9. Carry out the transformation below. More than one step will be required. Use any reagents you need. Show all reagents and intermediate structures. (4 points) -OH Br 12. Show the kinetic and thermodynamic product formed in the reaction of 1,3-dibutene with Brz and draw an energy diagram for both products. Show both products on the same graph with energy on the Y axis and reaction coordinates on the X axis. (4...
Show lone pairs on all appropriate atoms and the proper flow of electrons. (1) Mechanism #1: • Predict the products of the following reaction under different temperature conditions. • Show the mechanism for how the two products are formed at different temperatures (include resonance structures if appropriate). • Label the kinetic product and the thermodynamic product. (5 points) -80 °C + HBr 40 °C (2) Predict the product and show the complete mechanism for the following reaction. • Make sure...
5:43 PM Thu Oct 31 29% Chem2542 Assignment-6.doc 1. Provide the structure of diene and dienophile required for the synthesis of the following compound via Diels-Alder reaction. Ph сно сно 2. The following a,b-unsaturated ketone can react with nucleophilic reagents to yield 1,2-addition as well as 1,4-addition (conjugate addition) products depending on the nucleophilic reagent. Provide the structure of the major primary 1,2-addition or 1,4 addition product formed in each reaction 1. CH,MgCI 2. HC 1. LIAIH 2. HC 1....
12. Show the kinetic and thermodynamic product formed in the reaction of 1,3-dibutene with Brz and draw an energy diagram for both products. Show both products on the same graph with energy on the Y axis and reaction coordinates on the X axis. (4 points) Br2 ether buta-1,3-diene 11. Show the product and use arrows to show the mechanism for the Nucleophilic Aromatic Substitution Reaction below. Assume benzyne is an intermediate. Just write B: to represent a strong base reacting...
3. Fill in the reagents or products for the following reactions. Note some boxes will require two or three reagents in separate steps; list them as 1, 2, and 3. (2 points) 1. MeONa/MeOH 2. HCI +/ H2N Br 4. Using another sheet of paper, provide a reasonable reaction mechanism for the following transformation, starting with enamine generation (Carbonyls 2) and subsequent alkylation and hydrolysis (Carbonyls 3). Please write neatly and show all arrows, resonance structures, tetrahedral intermediates, and charges....
1. For each of the following structures, please fill in the missing information below or- Cl Molecular Formula:R_ Molecular Formula: DBE:_ DBE: 2. Given the reaction below, answer the following questions. Br HBr As the above reaction progresses to completion, what peak in the IR would you expect to disappear? Whereabout is the peak located in cm? a. b. Why does the M+1 peak NOT change from reactant to product? c. How many peaks (not the splitting pattern, just the...
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