QUESTION 5 Which of the following are good leaving groups? Choose all that apply. a. -OH...
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QUESTION 5 Which of the following are good leaving groups? Choose all that apply. a. -OH b.-OTf c. -Br d.-OMs e. -Cl 1. -OTS g.-F HO QUESTION 6 1 points Save Answer For problems 6-14, complete the reactions by filling the boxes with the necessary chemical reagent(s)/reaction conditions or major products. Provide reagent(s)/reaction conditions that would produce the major product most efficiently. Assume aqueous workups are performed if needed. OH a. Ag2O, NH4OH, H₂O b. NaBH4 c. CrO3, HCl, pyridine d. NaOH e, HBr f. H₂SO4 g. CrO3, H₂SO4, H₂O h. LIAIH4 oi. H₂O 0.25 points OH Save Answer QUESTION 16 Consider the reaction shown below to answer questions 16-19. x What will be the dominant mechanism that occurs in this reaction? oa. E1 ob. E2 QUESTION 17 Identify all possible positions that could be deprotonated based on the mechanism that you chose in Problem 16. B A A B C D E F A о в nc OD DE LINR₂ OF E ← C D Consider the dehydration reaction using the starting material shown below to answer questions 20-23. Hoft HO Which reagent(s) are required to perform a dehydration reaction? oa. HCI ob. H2SO4 oc. H₂O od. NaOH o e. H₂SO4, heat of. NaOH, heat Og. NaH QUESTION 21 Identify all carbocations that appear in the mechansim for this reaction. Choose all that apply. i) na.i b.ii nc. iii Dehydration nd.iv ii) iii) iv) e. None of the above. The reaction goes by an E2 mechanism and no carbocations are formed. QUESTION 5 Which of the following are good leaving groups? Choose all that apply. a. -OH b.-OTf c. -Br d.-OMs e. -Cl 1. -OTS g.-F HO QUESTION 6 1 points Save Answer For problems 6-14, complete the reactions by filling the boxes with the necessary chemical reagent(s)/reaction conditions or major products. Provide reagent(s)/reaction conditions that would produce the major product most efficiently. Assume aqueous workups are performed if needed. OH a. Ag2O, NH4OH, H₂O b. NaBH4 c. CrO3, HCl, pyridine d. NaOH e, HBr f. H₂SO4 g. CrO3, H₂SO4, H₂O h. LIAIH4 oi. H₂O 0.25 points OH Save Answer QUESTION 16 Consider the reaction shown below to answer questions 16-19. x What will be the dominant mechanism that occurs in this reaction? oa. E1 ob. E2 QUESTION 17 Identify all possible positions that could be deprotonated based on the mechanism that you chose in Problem 16. B A A B C D E F A о в nc OD DE LINR₂ OF E ← C D Consider the dehydration reaction using the starting material shown below to answer questions 20-23. Hoft HO Which reagent(s) are required to perform a dehydration reaction? oa. HCI ob. H2SO4 oc. H₂O od. NaOH o e. H₂SO4, heat of. NaOH, heat Og. NaH QUESTION 21 Identify all carbocations that appear in the mechansim for this reaction. Choose all that apply. i) na.i b.ii nc. iii Dehydration nd.iv ii) iii) iv) e. None of the above. The reaction goes by an E2 mechanism and no carbocations are formed.
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5 Ans a OH This is a poor leaving group because the hydroxide ion is a strong base and prefers to retain its electron pair b OTf tosylate This is a good leaving group because it is stable and can leav... View the full answer
Related Book For
Fundamentals of biochemistry Life at the Molecular Level
ISBN: 978-0470547847
4th edition
Authors: Donald Voet, Judith G. Voet, Charlotte W. Pratt
Posted Date:
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