Organic Chemistry II

Quiz #1: Benzene and Aromaticity


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Question # 1 (Multiple Choice) All of the following are limitations to the Friedel-Crafts alkylation reaction except
A) highly deactivated aromatic rings are unreactive under Friedel-Crafts conditions.
B) over-alkylation of the ring is a distinct possibility.
C) aniline derivatives are so reactive that over-alkylation is a possibility.
D) carbocation rearrangement can occur during the reaction.
E) Friedel-Crafts reactions do not occur if an amine derivative is atttached to the ring.

Question # 2 (Multiple Choice) What are the most likely product(s) of the following chemical reaction?
question 2 structure
A) question 2a structure
B) question 2b structure
C) question 2c structure
D) question 2d structure
E) question 2e structure

Question # 3 (Multiple Choice) Which of the following groups is activating?
A) N-amides
B) aldehydes
C) C-amides
D) A only
E) A and C only

Question # 4 (Multiple Choice) All of the following statements are true except
question 4 structure
A) No, because the nitro group is very deactivating.
B) Yes, the nitro group is meta directing.
C) No, the nitro group is ortho, para directing..
D) Yes, over-alkylation is not a problem with the deactivating nitro group..
E) No, the nitration conditions cause poly-nitration to occur.

Question # 5 (True/False) Halogens are deactivating (because of their relatively low electronegativity), yet are still ortho, para directing toward further EAS.
question 5 structure
True.
False.

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