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4. Consider the compound (2R,3S)-2-bromo-1,1,3-trimethylcyclohexane. A. Will this compound undergo E2 reaction? Explain. Show relevant structures...
1. Consider the following reaction: H-Bs A. Draw the mechanism of the reaction to predict all...
1. Consider the following reaction: H-Bs A. Draw the mechanism of the reaction to predict all the possible stereochemical products of the reaction. Show all electron flows using the curved arrows. (1) Does the reaction produce a meso compound? Explain. Justify with relevant structures to get full credit. B. Design the following synthesis. To get full credit, you will discuss the rationale or justification for each step and reagents you decide to use. Refer to the video presentation in Lesson...
Problem 6 (9 pts): Below is an E2 reaction for (1R 2R,4S)-2-bromo-4-methyl-1-(1- methyethyl)cyclohexane. Answer the following...
Problem 6 (9 pts): Below is an E2 reaction for (1R 2R,4S)-2-bromo-4-methyl-1-(1- methyethyl)cyclohexane. Answer the following questions. Br NaOEt, EtOH ? Q34: Draw all the possible products Q35: Draw an appropriate chair form that E2 reaction takes place. Steric strains of 1-methylethyl, bromine and methyl group are 2.20, 1.70, and 0.55 kcal/mol, respectively. Q36: Does reaction go fast or slowly? Answer either fast or slow. .
Gradescope #2 This question is worth 10 points. The reaction between (R)-2-bromo-3-methylbutane and water in the...
Gradescope #2 This question is worth 10 points. The reaction between (R)-2-bromo-3-methylbutane and water in the presence of heat forms Br. H30* and two organic products. Draw a stepwise mechanism for this reaction, clearly showing how each product is formed. Use curved arrows to show electron movement, and include all reactive intermediates, resonance structures, etc. Br H20
8) Predict the product(s) of the following E2 reaction. Be sure to include solid wedges and...
8) Predict the product(s) of the following E2 reaction. Be sure to include solid wedges and dashed es on your product(s). Use conformational structures (the templates below) to show the mechanism and explain your reasoning Br CHCH ONa CH CH2OH, 70 °C Explanation(s): 9) Consider the E1 reaction of (3S)-3-bromo-2,3-dimethylpentane to form alkenes a) Draw the structure of the haloalkane (be sure to include stereochemistry). Clearly label any chiral carbon atoms with an asterisk ). b) Draw the structures of...
Gradescope #2 This question is worth 10 points. The reaction between (R)-2-bromo-3-methylbutane and water in the...
Gradescope #2 This question is worth 10 points. The reaction between (R)-2-bromo-3-methylbutane and water in the presence of heat forms Br", H3O+ and two organic products. Draw a stepwise mechanism for this reaction, clearly showing how each product is formed. Use curved arrows to show electron movement, and include all reactive intermediates, resonance structures, etc. Br H2O Δ
5. In each of the problems below, consider the E1 or E2 reaction occurs then show...
5. In each of the problems below, consider the E1 or E2 reaction occurs then show the mechanism and product or products. Label major and minor products where applicable. a. Reaction of 1,1-bromomethylcyclohexane and sodium ethoxide in ethanol Br CH, OH b. Reaction of (1R 2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT: You should draw the ring in a chair conformation first. CHE + 0 *lller Сн, CH,CH-OH C. Reaction of (15,2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT:...
5. Mechanism: (20 pts) Show the detailed reaction mechanism including all relevant arrows, intermediates, inorganic products,...
5. Mechanism: (20 pts) Show the detailed reaction mechanism including all relevant arrows, intermediates, inorganic products, relevant resonance structures, and stereochemistry for the following reaction. heat OH H-Br step 1 step 2 step 3 step 4 Product(s) a. This is a S2/Sx1/E/E2/ reduction / oxidation mechanism. b. What is the product if the starting alcohol is reacted with PBrz? Product(s) with PBrz c. Reaction with PBr3 is a S2/S1/Ej / E2 / reduction / oxidation mechanism.
To earn full credit and receive feedback, please show all work for all problems. 1. Circle...
To earn full credit and receive feedback, please show all work for all problems. 1. Circle the compound that is the stronger acid. Explain and justify your choice using a combination of words and chemical structures. 2. Provide the complete mechanism (curved arrows) to show how the product is formed. Include all lone pairs, formal charges, curved arrows, intermediates, and products. You do not need to draw the structures of transition states. If there is a carbocation rearrangement and/or a...
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,...
1. Consider the following substituted alkanes. Indicate if the molecule would prefer to undergo an SN1...
1. Consider the following substituted alkanes. Indicate if the molecule would prefer to undergo an SN1 reaction, an reaction, BOTH S1/E1 or neither: -BOK 2. Briefly explain why you selected what you did for question 1a, 1b, and 1c. 3. Provide the missing reactant(s) or product(s) as necessary for the following Sy1 reactions. Be sure to use wedges/dashes to indicate stereochemistry where relevant. осн. HOCH,CH, heat 4. Draw the complete mechanism for the following reaction. Include all lone pairs, formal...
1. Consider the following reaction: H-Bs A. Draw the mechanism of the reaction to predict all the possible stereochemical products of the reaction. Show all electron flows using the curved arrows. (1) Does the reaction produce a meso compound? Explain. Justify with relevant structures to get full credit. B. Design the following synthesis. To get full credit, you will discuss the rationale or justification for each step and reagents you decide to use. Refer to the video presentation in Lesson...
Problem 6 (9 pts): Below is an E2 reaction for (1R 2R,4S)-2-bromo-4-methyl-1-(1- methyethyl)cyclohexane. Answer the following questions. Br NaOEt, EtOH ? Q34: Draw all the possible products Q35: Draw an appropriate chair form that E2 reaction takes place. Steric strains of 1-methylethyl, bromine and methyl group are 2.20, 1.70, and 0.55 kcal/mol, respectively. Q36: Does reaction go fast or slowly? Answer either fast or slow. .
Gradescope #2 This question is worth 10 points. The reaction between (R)-2-bromo-3-methylbutane and water in the presence of heat forms Br. H30* and two organic products. Draw a stepwise mechanism for this reaction, clearly showing how each product is formed. Use curved arrows to show electron movement, and include all reactive intermediates, resonance structures, etc. Br H20
8) Predict the product(s) of the following E2 reaction. Be sure to include solid wedges and dashed es on your product(s). Use conformational structures (the templates below) to show the mechanism and explain your reasoning Br CHCH ONa CH CH2OH, 70 °C Explanation(s): 9) Consider the E1 reaction of (3S)-3-bromo-2,3-dimethylpentane to form alkenes a) Draw the structure of the haloalkane (be sure to include stereochemistry). Clearly label any chiral carbon atoms with an asterisk ). b) Draw the structures of...
Gradescope #2 This question is worth 10 points. The reaction between (R)-2-bromo-3-methylbutane and water in the presence of heat forms Br", H3O+ and two organic products. Draw a stepwise mechanism for this reaction, clearly showing how each product is formed. Use curved arrows to show electron movement, and include all reactive intermediates, resonance structures, etc. Br H2O Δ
5. In each of the problems below, consider the E1 or E2 reaction occurs then show the mechanism and product or products. Label major and minor products where applicable. a. Reaction of 1,1-bromomethylcyclohexane and sodium ethoxide in ethanol Br CH, OH b. Reaction of (1R 2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT: You should draw the ring in a chair conformation first. CHE + 0 *lller Сн, CH,CH-OH C. Reaction of (15,2R) 1-bromo-2-methylcyclohexane and sodium ethoxide in ethanol. HINT:...
5. Mechanism: (20 pts) Show the detailed reaction mechanism including all relevant arrows, intermediates, inorganic products, relevant resonance structures, and stereochemistry for the following reaction. heat OH H-Br step 1 step 2 step 3 step 4 Product(s) a. This is a S2/Sx1/E/E2/ reduction / oxidation mechanism. b. What is the product if the starting alcohol is reacted with PBrz? Product(s) with PBrz c. Reaction with PBr3 is a S2/S1/Ej / E2 / reduction / oxidation mechanism.
To earn full credit and receive feedback, please show all work for all problems. 1. Circle the compound that is the stronger acid. Explain and justify your choice using a combination of words and chemical structures. 2. Provide the complete mechanism (curved arrows) to show how the product is formed. Include all lone pairs, formal charges, curved arrows, intermediates, and products. You do not need to draw the structures of transition states. If there is a carbocation rearrangement and/or a...
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,...
1. Consider the following substituted alkanes. Indicate if the molecule would prefer to undergo an SN1 reaction, an reaction, BOTH S1/E1 or neither: -BOK 2. Briefly explain why you selected what you did for question 1a, 1b, and 1c. 3. Provide the missing reactant(s) or product(s) as necessary for the following Sy1 reactions. Be sure to use wedges/dashes to indicate stereochemistry where relevant. осн. HOCH,CH, heat 4. Draw the complete mechanism for the following reaction. Include all lone pairs, formal...
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