What is the role of AlCl3 in Friedel Crafts acylations using acid ...

[faduma]

What is the role of AlCl3 in Friedel Crafts acylations using acid chlorides?
 a. Lewis acid
  b. electrophile
  c. base
  d. nucleophile

Question 2

What is the electrophile in the reaction of benzene with tert-butyl chloride and AlCl3?
 a. CH3+
  b. Cl+
  c. (CH3)C+
  d. benzene

Question 3

What is the electrophile in the reaction of benzene with acetyl chloride, CH3COCl, and AlCl3?
 a. CH3CO+
  b. CH3+
  c. CH3CO2
  d. benzene

Question 4

What is the electrophile in the reaction of benzene with a mixture of nitric acid and sulfuric acid?
 a. HONO
  b. NO+
  c. NO2+
  d. benzene

Question 5

Why are nitrophenols more acidic than phenols?

[dlook33]

Answer to Question 1

a

Answer to Question 2

c

Answer to Question 3

a

Answer to Question 4

b

Answer to Question 5

Nitro phenols are more acidic than phenols because of the electron-withdrawing inductive effect of the NO2 group. Also, the negative charge of the phenoxide ion on the ortho and para positions of nitrophenol is delocalized onto the oxygen atom of the NO2 group, thus making it more stable and acidic.

[faduma]

Thank you!

[dlook33]

Always glad to help...