this is a seminarr on the friedel craft alkylation an d acylation.this is alll about the presentation you can get here

1. FRIEDELCRAFT’S REACTION
(A CASE STUDY OF SE- REACTION)
BY-
Sambit Bhai Patel

2.  Introduction
 Electrophillic substitution
 Friedel craft’s reaction & it’s type
 Friedel craft’s alkylation reaction’s statement
 Friedel craft’s alkylation reaction’s mechanism
 Friedel craft’s alkylation reaction’s examples
 Limitation of friedel craft’s alkylation reaction
 Friedel craft’s acylation reaction’s statements
 Friedel craft’s acylation reaction’s mechanism
 Friedel craft’s acylation reaction’s examples
 Conclusion
CONTENTS

3. INTRODUCTION
 Substitution reaction -
This is the replacement organic reaction in which a atomor group is replacedby a another
atomor groupof reagent to formed substitution product.
 It is of two types -
(a) Nucleophilic substitution
(b) Electrophilicsubstitution

4. Electrophilic substitution
1)Electrophile means loving of electron and the reagent , compounds or ions having deficient of
electron is called electophile.
2)The subustution reaction which is initiated by a electrophile & this reaction is called electrophilic
substitution reaction.
3) Electrophilic substitution reaction occurs in aromatic hydrocarbon & aromatic compound.
4) It is the type of substitution reaction where an electrophile attacks to the aromatic ring and replaced
or substitute another electrophile of aromatic ring (H+) to form electrophile subustation products.
5)The electrophilic substitution reaction occurs in the benzene ring is
a) halogenation
b)nitration
c)sulphonation d)Friedel craft’s reaction

5. Friedel craft’s reaction and it’s type
Friedel craft’s reaction was introduced by Charles Friedel
And James Craft in 1877 to attached substituents to an aromatic ring. This reactin is known as
Fridel craft’s reaction.
It is of two types
a) Friedel Craft’s alkylation
b) Friedel Craft’s acylation
(Charles Friedel) (James Craft)

6. Friedel Craft’s alkylation
When an benzene ring with alkyl halide in presense of anhydrous AlX3 it will form alkyl benzene.
It is the best method of preparation of alkyl benzene.
When benzene ring reacts with methyl chloride in presence of anhydrous AlCl3 it will form
methyl benzene or toluene.

7. Friedel craft’s alkylation reaction’s mechanism
It occurs in 3 steps
Step-1- Generation of Electrophile methyl carbonium.
Step-2- Attack the electrophile to benzene ring and form sigma complex which is
stabilized by resonance.
Step-3-The abstraction of H+ from sigma complex to form electrophilic substitutions
products .

8. Friedel craft’s alkylation reaction’s examples
When benzene reacts with 1-Chloropropane in presence of AlCl3 it gives 2 products.
One is n-propylbenzene which is minor product and another is iso-propylbenzene
which is major product because 20 carbocation is more stable than 10 carbocation.
(iso-propylbenzene)

9. Limitation OF FRIEDEL CRAFT’S ALKYLATION REACTION

10. Friedel craft’s acylation reaction’s statements
When benzene reacts with acylchloride in presence of AlCl3 it gives benzophenone.
Friedel craft’s acylation reaction’s mechanism
It occurs in 3 steps-
Step-1- Generation of electrophile
(acylcarbocation)

11. Step-3-The abstraction of H+ from sigma complex to form electrophilic substitutions products .
Step-2- Attack the electrophile to benzene ring and form sigma complex which is stabilized by
resonance.

12. Friedel craft’s acylation reaction’s examples
When benzene reacts with acetyl chloride in presence of catalyst anhydrous AlCl3 it will form acetophenone.
Reaction-