What is the product formed when benzene is heated with acetic anhydride and anhydrous $A l C l_{3}$ ?

Acetophenone

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Toluene

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Benzoic acid

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Phenyl acetic acid

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Solution

The correct option is A Acetophenone
The product formed when benzene is heated with acetic anhydride and anhydrous $A l C l_{3}$ is acetophenone $(C_{6} H_{5} - C O - C H_{3})$ . It is an example of Friedel crafts acylation reaction. It is an electrophilic aromatic substitution reaction. H atom of benzene is replaced with acetyl $(C H_{3} - C O -)$ group.

$C_{6} H_{5} - H + C H_{3} - C O - O - C O - C H_{3} {anhydrous AlCl}_{3} - ------------- \to Δ C_{6} H_{5} - C O - C H_{3} + C H_{3} - C O O H$

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Statement-1 : Friedel-crafts reaction between benzene and acetic anhydride in the presence of anhydrous $A l C l_{3}$ yields acetophenone and not poly substituted products.
Statement-2 : Acetophenone formed, poisons the catalyst preventing further reaction.

Name :
(a) compound formed when acetic acid and ethanol react together.
(b) the reducing agent used to convert acetic acid into ethanol.
(c) the substance used to change acetic acid to acetic anhydride.

Q. Acetic anhydride reacts with

A l C l_{3}

to give:

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What is the product formed when benzene is heated with acetic anhydride and anhydrous AlCl3?

What is the product formed when benzene is heated with acetic anhydride and anhydrous $A l C l_{3}$ ?