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3. The elimination below has a second order rate constant (E2). What is the most plausible...
8.9 Consider the following competition between E2 elimination and E1 elimination. CH3 H3 solvent ...
8.9 Consider the following competition between E2 elimination and E1 elimination. CH3 H3 solvent Br:Base: CH- ex H3C t-butoxide 73 27 "pyridine % #2-alkene % #4-alkene 10 90 a. (1 point) The alkene/alkene product ratio is the dependent variable for this study. What is the (independent) variable? b. (1 point) What is (are) the data trend(s)? C. (3 points) what do the data trends tell us about elimination mechanisms? Use arrows to show the preferred pathway for t-butoxide CH3 Use...
What major product forms from the following E2 elimination reaction? Answer options: Question 4 1.5 pts...
What major product forms from the following E2
elimination reaction?
Answer options:
Question 4 1.5 pts What major product forms from the following E2 elimination reaction? CH3 Br excess KOH ethanol, heat CH3 Hints: (1) Please be sure you understand where the possible anti-periplanar eliminations can occur for this substituted cyclohexane. Therefore, it is recommended that you convert the starting alkyl halide into its chair structural representation. (2) The ring beta-proton should be trans to the alpha-halogen leaving group in...
Arrange the following three alkoxide bases in descending order wit of E2 elimination to SN2 displacement...
Arrange the following three alkoxide bases in descending order wit of E2 elimination to SN2 displacement products observed when they bromide. Place the base that gives the most E2 product (highest ratio o and follow in order to the base that gives the least E2 (most Sn2) last two sentences. E2 to SN2) first . Explain in one or 1) (CH3)2CH-O 2) CH3-o 3) (CH3CH2)3C-o
30) Give the major elimination product for the reaction. (3 points) 2"он CHs CH3 Br CHs 31) Give the major product for the E2 reaction. (3 points) CH3 0 CH3 CH3 CHs CHCH2 C 32) What is the major...
30) Give the major elimination product for the reaction. (3 points) 2"он CHs CH3 Br CHs 31) Give the major product for the E2 reaction. (3 points) CH3 0 CH3 CH3 CHs CHCH2 C 32) What is the major product of the following reactions?(6 points) CH он HCI, Δ
30) Give the major elimination product for the reaction. (3 points) 2"он CHs CH3 Br CHs 31) Give the major product for the E2 reaction. (3 points) CH3 0 CH3 CH3...
4. Draw the most stable E2 elimination product for the following. Include a newman projection justify...
4. Draw the most stable E2 elimination product for the following. Include a newman projection justify your answer. (2 points) CH3 - CH₂ a. ČH₂ či H3C- CH b. H. CH₂ (2 points)
3. Predict the product(s) for each of the E2 elimination reactions below. Identify the major product for each. a. B...
3. Predict the product(s) for each of the E2 elimination reactions below. Identify the major product for each. a. Br heat V Br NaOCH heat 4. Predict the product(s) for each of the E1 elimination reactions below. Identify the major product for each. H2SO4 > OH heat
2. Write the structures of all the alkenes formed from the E2 elimination of HX (dehydrohalogenation)...
2. Write the structures of all the alkenes formed from the E2 elimination of HX (dehydrohalogenation) of the compounds below using KOH and heat. Circle the major product. a. 1-chloropentane b. 1-bromo-4-methylpentane c. 1-bromo-2-methylpentane d. 1-bromohexane e. 2-bromo-2-methylpentane f. 2-chloromethylcyclopentane
1. Rank the alkyl halides in each group in order of increasing E2 reactivity. a. Br...
1. Rank the alkyl halides in each group in order of increasing E2 reactivity. a. Br Br Br I П III b. Cн, Br Нас CI CH3 П III Rank the alkyl halides in each group of problem one in order of increasing El reactivity. 2. Which elimination reaction in each pair is faster? (I or II) 3. а. сн, Нас. Он Он II. b. HO DMSO он (CH),CCI (CH),CCI П. I. Н.о What alkenes are formed from each alkyl...
1. Why would elimination by the E2 mechanism not occur for the molecule below! C(CH3)3 ...C/...
1. Why would elimination by the E2 mechanism not occur for the molecule below! C(CH3)3 ...C/ C(CH3)3 2. Using Page 164 as a guide, give the E1 mechanism for the reaction of the molecule above with potassium hydroxide.
18. What is the expected product of the E2 elimination for the reaction? CH3 CH3 H...
18. What is the expected product of the E2 elimination for the reaction? CH3 CH3 H NaOCH3 k Br 19. Provide the starting material for the following reaction: 1. 03. (-78 °C) 2.(CH3) CH;---2-CH2-CH-CH2-C-CH2-CHz
8.9 Consider the following competition between E2 elimination and E1 elimination. CH3 H3 solvent Br:Base: CH- ex H3C t-butoxide 73 27 "pyridine % #2-alkene % #4-alkene 10 90 a. (1 point) The alkene/alkene product ratio is the dependent variable for this study. What is the (independent) variable? b. (1 point) What is (are) the data trend(s)? C. (3 points) what do the data trends tell us about elimination mechanisms? Use arrows to show the preferred pathway for t-butoxide CH3 Use...
What major product forms from the following E2
elimination reaction?
Answer options:
Question 4 1.5 pts What major product forms from the following E2 elimination reaction? CH3 Br excess KOH ethanol, heat CH3 Hints: (1) Please be sure you understand where the possible anti-periplanar eliminations can occur for this substituted cyclohexane. Therefore, it is recommended that you convert the starting alkyl halide into its chair structural representation. (2) The ring beta-proton should be trans to the alpha-halogen leaving group in...
Arrange the following three alkoxide bases in descending order wit of E2 elimination to SN2 displacement products observed when they bromide. Place the base that gives the most E2 product (highest ratio o and follow in order to the base that gives the least E2 (most Sn2) last two sentences. E2 to SN2) first . Explain in one or 1) (CH3)2CH-O 2) CH3-o 3) (CH3CH2)3C-o
30) Give the major elimination product for the reaction. (3 points) 2"он CHs CH3 Br CHs 31) Give the major product for the E2 reaction. (3 points) CH3 0 CH3 CH3 CHs CHCH2 C 32) What is the major product of the following reactions?(6 points) CH он HCI, Δ
30) Give the major elimination product for the reaction. (3 points) 2"он CHs CH3 Br CHs 31) Give the major product for the E2 reaction. (3 points) CH3 0 CH3 CH3...
4. Draw the most stable E2 elimination product for the following. Include a newman projection justify your answer. (2 points) CH3 - CH₂ a. ČH₂ či H3C- CH b. H. CH₂ (2 points)
3. Predict the product(s) for each of the E2 elimination reactions below. Identify the major product for each. a. Br heat V Br NaOCH heat 4. Predict the product(s) for each of the E1 elimination reactions below. Identify the major product for each. H2SO4 > OH heat
2. Write the structures of all the alkenes formed from the E2 elimination of HX (dehydrohalogenation) of the compounds below using KOH and heat. Circle the major product. a. 1-chloropentane b. 1-bromo-4-methylpentane c. 1-bromo-2-methylpentane d. 1-bromohexane e. 2-bromo-2-methylpentane f. 2-chloromethylcyclopentane
1. Rank the alkyl halides in each group in order of increasing E2 reactivity. a. Br Br Br I П III b. Cн, Br Нас CI CH3 П III Rank the alkyl halides in each group of problem one in order of increasing El reactivity. 2. Which elimination reaction in each pair is faster? (I or II) 3. а. сн, Нас. Он Он II. b. HO DMSO он (CH),CCI (CH),CCI П. I. Н.о What alkenes are formed from each alkyl...
1. Why would elimination by the E2 mechanism not occur for the molecule below! C(CH3)3 ...C/ C(CH3)3 2. Using Page 164 as a guide, give the E1 mechanism for the reaction of the molecule above with potassium hydroxide.
18. What is the expected product of the E2 elimination for the reaction? CH3 CH3 H NaOCH3 k Br 19. Provide the starting material for the following reaction: 1. 03. (-78 °C) 2.(CH3) CH;---2-CH2-CH-CH2-C-CH2-CHz
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