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Author Question: What is the major product of the reaction of nitrobenzene with Br2/FeBr3? ... (Read 39 times)

HCHenry

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on: Aug 23, 2018
What is the major product of the reaction of nitrobenzene with Br2/FeBr3?
 

Question 2

What is the most likely mechanism of the following reaction?
 
  1.SN1
  2.SN2
  3.E1
  4.E2
  5.E1cB

Question 3

Benzene undergoes substitution when reacted with Br2, as contrasted with other compounds containing  bonds where addition is the norm. What is the main reason for this behavior?
   
  1.addition would lead to non aromatic system
  2.substitution gives product of higher energy
  3.production of HBr results in the very stable byproduct
  4.aromatic systems react faster because the intermediate is stabilized by resonance
  5.the transition state of the first step is aromatic

Question 4

The coronene shown below is planar. What is true about it?
   
  1.It is aromatic because it has (4n + 2)  electrons.
  2.It is antiaromatic because it has (4n)  electrons.
  3.It is aromatic because it has two  rings each with (4n + 2)  electrons.
  4.It is antiaromatic because Hckel rule applies only to single rings.
  5.It is non-aromatic.

Question 5

What is the most likely protonation site in the conjugated alkene shown below?
 
  1.1
  2.2
  3.3
  4.4
  5.5

Question 6

Which of the following is the best characterization of the cyclopentadienyl cation?
   
  1.hyperconjugated
  2.antiaromatic
  3.vinylic
  4.allylic
  5.benzylic


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karmakat49

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Reply #1 on: Aug 23, 2018
Answer to Question 1

3

Answer to Question 2

2

Answer to Question 3

1

Answer to Question 4

3

Answer to Question 5

1

Answer to Question 6

2


HCHenry

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Reply #2 on: Aug 23, 2018
Thanks


karmakat49

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Reply #3 on: Aug 23, 2018
Welcome :)


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