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QUESTION 29 Consider your answer to the previous problem, the stereocenters in the starting material, and your answer to problem 26. Which reagent is required in the box for Reaction 1?

QUESTION 29 Consider your answer to the previous problem, the stereocenters in the starting material, and your answer to problem 26. Which reagent is required in the box for Reaction 1?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer only question 29 other question are for reference only!!

QUESTION 24 For problems 24-30, answer the questions about the 2-step reaction sequence shown below Reaction 1 Intermediate Product Y Reaction 2 HO What new functional group is found in the final product? O a Carbonyl O b. Alcohol OC. Alkyne Od. Tert-butyl group O e. Alkene Of. a,B-unsaturated carbonyl QUESTION 25 Dehydration WILL NOT produce the desired product from the given starting material. (See questions 20-23 for companson.) We need more control over the sterochemistry to synthesize the corect product, we need to use an E2 reaction In addition to a strong base, what other components does an E2 reaction require? Choose all that apply. OL An antiperiplanar relationship between the leaving group and a H atom OII. A good leaving group O II. A gauche relationship between the leaving group and a H atom OV. An eclipsed relationship between the leaving group and a H atom OV. A carbocation QUESTION 26 Based on your answer to the previous problem, which conformation is needed to produce the desired product through an E2 mechanism? LG CH, H3CH H,CH H.LG ICH HLG (H,C),c CH, H. (H3C),C CH, LG (H,C),C CH, ČH, (H,C),CLG O a O b O c O d O e
Transcribed Image Text:QUESTION 24 For problems 24-30, answer the questions about the 2-step reaction sequence shown below Reaction 1 Intermediate Product Y Reaction 2 HO What new functional group is found in the final product? O a Carbonyl O b. Alcohol OC. Alkyne Od. Tert-butyl group O e. Alkene Of. a,B-unsaturated carbonyl QUESTION 25 Dehydration WILL NOT produce the desired product from the given starting material. (See questions 20-23 for companson.) We need more control over the sterochemistry to synthesize the corect product, we need to use an E2 reaction In addition to a strong base, what other components does an E2 reaction require? Choose all that apply. OL An antiperiplanar relationship between the leaving group and a H atom OII. A good leaving group O II. A gauche relationship between the leaving group and a H atom OV. An eclipsed relationship between the leaving group and a H atom OV. A carbocation QUESTION 26 Based on your answer to the previous problem, which conformation is needed to produce the desired product through an E2 mechanism? LG CH, H3CH H,CH H.LG ICH HLG (H,C),c CH, H. (H3C),C CH, LG (H,C),C CH, ČH, (H,C),CLG O a O b O c O d O e
QUESTION 28 How can the issue encountered in the previous problem be avoided? (Fill in the blank.) Before a strong base is applied, we must O a. Activate the alcohol. O b.Perform a radical halogenation reaction. OC. Deprotonate the alcohol. d. Reduce the alcohol. O e. Oxidize the alcohol. QUESTION 29 Consider your answer to the previous problem, the stereocenters in the starting material, and your answer to problem 26. Which reagent is required in the box for Reaction 1? О a. LDA b. PBr3 Ос Сrоз. НС, ругidine Od.CITS, pyridine O e. NaOH Of. LIAIH4 Og. HBr
Transcribed Image Text:QUESTION 28 How can the issue encountered in the previous problem be avoided? (Fill in the blank.) Before a strong base is applied, we must O a. Activate the alcohol. O b.Perform a radical halogenation reaction. OC. Deprotonate the alcohol. d. Reduce the alcohol. O e. Oxidize the alcohol. QUESTION 29 Consider your answer to the previous problem, the stereocenters in the starting material, and your answer to problem 26. Which reagent is required in the box for Reaction 1? О a. LDA b. PBr3 Ос Сrоз. НС, ругidine Od.CITS, pyridine O e. NaOH Of. LIAIH4 Og. HBr
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