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26. Which of the following alkenes is more stable? Ans: 29. Show the mechanism for the...
40. What is the product of the following elimination? Роме Ans: 44. Which of the following...
40. What is the product of the following elimination? Роме Ans: 44. Which of the following alkyl halides would be more reactive in an E2 elimination B. Ans: 51. Draw the major product of the following reaction. Өоме Ans: 58. Which of the following is most reactive in an El reaction? Ans: 59. Based upon the following energy diagram, is this reaction an El or an E2 elimination? free energy, kJ/mol reaction coordinate Ans:
Ans! 79. Draw the mechanism and product for the following elimination. ОН conc. H2SO4 heat Ans:...
Ans! 79. Draw the mechanism and product for the following elimination. ОН conc. H2SO4 heat Ans: 81. Draw the mechanism and product for the following elimination. Br KOtBu 88. Is the following more likely a nucleophile or a base? YNY Ans: 90. Which of the following is the strongest nucleophile? = =0 MeOH Meo B. U. ODD. A. Ans:
label the alpha carbon and beta carbons in each of the following compounds. naming alkenes, E/Z...
label the alpha carbon and beta carbons in each of the
following compounds.
naming alkenes, E/Z nomenclature and determine the overall relative stability of alkenes Predict and draw the major elimination product based on Zaitsev's rule Be able to draw the mechanism for both E1 and E2 and their corresponding energy diagrams Predict whether a reaction will be first or second order (S,1, S 2, E1 or E2) 1. Label the a carbon and B-carbons in each of the following...
5. For the following alkenes, indicate which can isomerize to more stable compounds (consider this to...
5. For the following alkenes, indicate which can isomerize to more stable compounds (consider this to be catalyzed by a strong acid) and the structure of the more stable alkene. 6. Rank the following alkenes from least stable (1) to most stable (6) 7. Indicate which of the following cations can rearrange to a more stable structure and provide the structure: OH 8. Give the structure of the major organic product obtained from each reaction shown:
For each of the following reactions, determine which ELIMINATION mechanism (E1 or E2) will occur. Alkyl...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or E2) will occur. Alkyl Halide Substitution: Methyl 1° 2° 3° Base Strength: Strong Weak Mechanism Type: E1 E2 Draw the mechanism that leads to ALL products for the reaction. Finally, underline the major product of the elimination reaction: H3C OH H2C H2C1 Br CHE
1 = least stable 4= most stable 3. Rank the following alkenes in order to increasing...
1 = least stable 4= most stable 3. Rank the following alkenes in order to increasing stability. Irasubstituceda 4. Draw the mechanism for the following E2 reactions.
(4) Which of the following shows a mechanism of a concerted elimination? OMe A. OMe C....
(4) Which of the following shows a mechanism of a concerted elimination? OMe A. OMe C. D. OMe (5) The major product of the following elimination reaction is Ot e the MAJOR products for the reactions and MAJOR stereochemistry products I (8), or fill the blank for (5). (36 pts) CH3 HBr
6. Predict which of the following two isomers (cis- or trans-) will undergo an E2 elimination...
6. Predict which of the following two isomers (cis- or trans-) will undergo an E2 elimination under the treatment with EtoNa in EtOH more rapidly. A) For the explanation of the reaction rate, draw chair conformations for each isomer, determine which conformation is more stable . B) Draw the major product and the mechanism of the reactions. CI cis-isomer trans-isomer
How many hydrogens will a 10-carbon alkene (one double bond, no heteroatoms) have (i.e., C10H22) 16)...
How many hydrogens will a 10-carbon alkene (one double bond, no heteroatoms) have (i.e., C10H22) 16) Answer: C) 20 D) 22 A) 16 B) 18 17) Which of the following alkenes has an E-configuration? ci o C) Answer: cl 18) Which of the following alkenes is the most stable? B) A) D) C) Answer: 19) What mechanism would this elimination (that obeys the Zaitsev's rule) follow? ci KOH C) SNI D) SN2 Answer: A) E1 B) E2 20) What is...
D)IIs Tastest with tertary nalides 28) What is the major elimination product obtained from the following...
D)IIs Tastest with tertary nalides 28) What is the major elimination product obtained from the following reaction? Br MeOH IV B) II C) III 29) Which of the following is the least reactive substrate in an E2 reaction? Cl Cl Cl CI IV A) I B) II C) III D) IV
40. What is the product of the following elimination? Роме Ans: 44. Which of the following alkyl halides would be more reactive in an E2 elimination B. Ans: 51. Draw the major product of the following reaction. Өоме Ans: 58. Which of the following is most reactive in an El reaction? Ans: 59. Based upon the following energy diagram, is this reaction an El or an E2 elimination? free energy, kJ/mol reaction coordinate Ans:
Ans! 79. Draw the mechanism and product for the following elimination. ОН conc. H2SO4 heat Ans: 81. Draw the mechanism and product for the following elimination. Br KOtBu 88. Is the following more likely a nucleophile or a base? YNY Ans: 90. Which of the following is the strongest nucleophile? = =0 MeOH Meo B. U. ODD. A. Ans:
label the alpha carbon and beta carbons in each of the
following compounds.
naming alkenes, E/Z nomenclature and determine the overall relative stability of alkenes Predict and draw the major elimination product based on Zaitsev's rule Be able to draw the mechanism for both E1 and E2 and their corresponding energy diagrams Predict whether a reaction will be first or second order (S,1, S 2, E1 or E2) 1. Label the a carbon and B-carbons in each of the following...
5. For the following alkenes, indicate which can isomerize to more stable compounds (consider this to be catalyzed by a strong acid) and the structure of the more stable alkene. 6. Rank the following alkenes from least stable (1) to most stable (6) 7. Indicate which of the following cations can rearrange to a more stable structure and provide the structure: OH 8. Give the structure of the major organic product obtained from each reaction shown:
For each of the following reactions, determine which ELIMINATION mechanism (E1 or E2) will occur. Alkyl Halide Substitution: Methyl 1° 2° 3° Base Strength: Strong Weak Mechanism Type: E1 E2 Draw the mechanism that leads to ALL products for the reaction. Finally, underline the major product of the elimination reaction: H3C OH H2C H2C1 Br CHE
1 = least stable 4= most stable 3. Rank the following alkenes in order to increasing stability. Irasubstituceda 4. Draw the mechanism for the following E2 reactions.
(4) Which of the following shows a mechanism of a concerted elimination? OMe A. OMe C. D. OMe (5) The major product of the following elimination reaction is Ot e the MAJOR products for the reactions and MAJOR stereochemistry products I (8), or fill the blank for (5). (36 pts) CH3 HBr
6. Predict which of the following two isomers (cis- or trans-) will undergo an E2 elimination under the treatment with EtoNa in EtOH more rapidly. A) For the explanation of the reaction rate, draw chair conformations for each isomer, determine which conformation is more stable . B) Draw the major product and the mechanism of the reactions. CI cis-isomer trans-isomer
How many hydrogens will a 10-carbon alkene (one double bond, no heteroatoms) have (i.e., C10H22) 16) Answer: C) 20 D) 22 A) 16 B) 18 17) Which of the following alkenes has an E-configuration? ci o C) Answer: cl 18) Which of the following alkenes is the most stable? B) A) D) C) Answer: 19) What mechanism would this elimination (that obeys the Zaitsev's rule) follow? ci KOH C) SNI D) SN2 Answer: A) E1 B) E2 20) What is...
D)IIs Tastest with tertary nalides 28) What is the major elimination product obtained from the following reaction? Br MeOH IV B) II C) III 29) Which of the following is the least reactive substrate in an E2 reaction? Cl Cl Cl CI IV A) I B) II C) III D) IV
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