JEE Exam > JEE Questions > Which of the following reacts with benzene in...
Start Learning for Free
Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?
- a)CH3Cl
- b)CH3COOH
- c)CH3CHO
- d)CH3COCl
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Which of the following reacts with benzene in presence of anhydrous al...
Formation of Acetophenone from Benzene
In the presence of anhydrous aluminium chloride, benzene reacts with acetyl chloride (CH3COCl) to form acetophenone. The reaction is known as Friedel-Crafts acylation.
Mechanism of Friedel-Crafts Acylation
Step 1: Formation of acylium ion
Anhydrous aluminium chloride (AlCl3) acts as a Lewis acid and accepts a lone pair of electrons from the carbonyl oxygen of acetyl chloride. This leads to the formation of an acylium ion (CH3CO+).
CH3COCl + AlCl3 → CH3CO+ + AlCl4-
Step 2: Attack of benzene on acylium ion
The aromatic ring of benzene acts as a nucleophile and attacks the positively charged acylium ion. This leads to the formation of an intermediate compound (an arenium ion).
CH3CO+ + C6H6 → C6H5COCH3+
Step 3: Removal of proton
The intermediate compound (arenium ion) loses a proton to form the final product, acetophenone.
C6H5COCH3+ → C6H5COCH3 + H+
Thus, the overall reaction can be represented as:
C6H6 + CH3COCl → C6H5COCH3 + HCl
Conclusion
In the presence of anhydrous aluminium chloride, benzene reacts with acetyl chloride to form acetophenone via Friedel-Crafts acylation. The reaction involves the formation of an acylium ion, attack of benzene on the acylium ion, and removal of a proton to form the final product.
In the presence of anhydrous aluminium chloride, benzene reacts with acetyl chloride (CH3COCl) to form acetophenone. The reaction is known as Friedel-Crafts acylation.
Mechanism of Friedel-Crafts Acylation
Step 1: Formation of acylium ion
Anhydrous aluminium chloride (AlCl3) acts as a Lewis acid and accepts a lone pair of electrons from the carbonyl oxygen of acetyl chloride. This leads to the formation of an acylium ion (CH3CO+).
CH3COCl + AlCl3 → CH3CO+ + AlCl4-
Step 2: Attack of benzene on acylium ion
The aromatic ring of benzene acts as a nucleophile and attacks the positively charged acylium ion. This leads to the formation of an intermediate compound (an arenium ion).
CH3CO+ + C6H6 → C6H5COCH3+
Step 3: Removal of proton
The intermediate compound (arenium ion) loses a proton to form the final product, acetophenone.
C6H5COCH3+ → C6H5COCH3 + H+
Thus, the overall reaction can be represented as:
C6H6 + CH3COCl → C6H5COCH3 + HCl
Conclusion
In the presence of anhydrous aluminium chloride, benzene reacts with acetyl chloride to form acetophenone via Friedel-Crafts acylation. The reaction involves the formation of an acylium ion, attack of benzene on the acylium ion, and removal of a proton to form the final product.
Attention JEE Students!
To make sure you are not studying endlessly, EduRev has designed JEE study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in JEE.
|
Explore Courses for JEE exam
|
|
Top Courses for JEEView all
Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer?
Question Description
Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer?.
Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?a)CH3Clb)CH3COOHc)CH3CHOd)CH3COClCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup