Acetophenone is an organic compound that is the simplest aromatic ketone. It has the formula C6H5C(O)CH3 and is a methyl ketone where one methyl group of acetone is replaced by a phenyl group. Acetophenone is a colorless, viscous liquid with a sweet pungent odor. It can be prepared through Friedal-Crafts acylation using acetyl chloride and benzene or through catalytic air oxidation of ethylbenzene. Acetophenone is used as a solvent, in fragrances, as a flavoring agent, and in organic syntheses.

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ACETOPHENONE
Acetophenone is the organic compound with the formula C6H5C(O)CH3.
Tt is a methyl ketone that is acetone in which one of the methyl groups has
been replaced by a phenyl group.It is the simplest aromatic ketone.
IUPAC Name : 1-Phenylethan-1-one
Others Names : 1. phenylethanone
2. Phenylacetone
3. Methyl phenyl ketone
Properties :
States : Viscous liquid
Color : Colourless
Odor : sweet pungent
Chemical formula : C6H5C(O)CH3 or C8H8O
Molar mass : 120.151 g/mol
Density : 1.028 g/cm3
Melting point : 19 – 20 ℃
Boiling point : 202 ℃
Molecular structure :
Molecular Structure of Acetophenone

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Preparation of Acetophenone:
1. By Friedal craft’s Acylation :
When Acetyl chloride reacts with benzene in presence of
anhydrous aluminium chloride to form acetophenone.
Benzene Acetyl chloride Acetophenone
2. By catalytic air oxidation :
When ethyl benzene is heated in air or oxygen at 180 ℃ under
pressure and presence of manganese acetate it forms acetophenone.
+ O2 Mn(CH3CO2)2 + H2O
180 ℃
Ethyl benzene Acetophenone
Uses of Acetophenone :
1. As a solvent for plastics and resins.
2. For fragrance in soaps and perfumes.
3. As a flavoring agent in foods.
4. As a catalyst for the polymerization of olefins.
5. In organic syntheses as a photosensitizer.
(Acetophenone has a sweet pungent odor of orange blossom or jasmine)