Weekend Quiz 5-Name Due Date: 11/06/2017 026. What pattern is the second step of

Question

Weekend Quiz 5-Name Due Date: 11/06/2017 026. What pattern is the second step of this reaction? A. Proton Transfer B. Loss of Leaving Group C. Nucleophilic Attack D. Rearrangement Q27 Which of the following is the nucleophilic site in the following reaction? Li-Me A. C of the carbonyl B. O C. Li D. Me of Li-Me Q28. Which of the following is the electrophilic site in the following reaction? Li-Me A. C of the carbonyl B. o C. Li D. Me Q29. Which of the following is the electrophilic site in the following reaction? HOMe Cl A. C of carbonyl B. 0 of carbonyl C. CI D. 0 of alcohol Q30. Which of the following cations is likely to undergo rearrangement? A.

Explanation / Answer

26. Ans : B (Here water is a leaving group).

27. Ans : D (Methyl is having negative charge on carbon. Therefore methyl is nucleophile in methyl lithium).

28. Ans : A (Carbon of the carbonyl is the electrophilic site).

29. Ans : A (carbon of the carbonyl is the electrophilic site).

30. Ans : B (B is a secondary carbocataion which will undergo rearrangement then give tertiary carbocataion).

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