4-Methylacetophenone

4-Methylacetophenone

File:P-Methylacetophenon.svg
Names
IUPAC name 1-(4-methylphenyl)ethanone
Other names p-Methylacetophenone; p-Acetyltoluene
Identifiers
CAS Number	122-00-9 checkY
3D model (JSmol)	Interactive image
ChEBI	CHEBI:178626
ChEMBL	ChEMBL271871
ChemSpider	8186
ECHA InfoCard
EC Number	204-514-8
E number
PubChem CID	8500
UNII	AX66V0KX3Y
CompTox Dashboard (EPA)	{{#property:P3117}}
InChI InChI=1S/C9H10O/c1-7-3-5-9(6-4-7)8(2)10/h3-6H,1-2H3 Key: GNKZMNRKLCTJAY-UHFFFAOYSA-N
SMILES CC1=CC=C(C=C1)C(=O)C
Properties
Chemical formula	C9H10O
Molar mass	134.178 g·mol−1
Appearance	white or colorless oil
Density	1.006 g/cm3
Melting point	28 °C (82 °F; 301 K)
Boiling point	224 °C (435 °F; 497 K)
Hazards
GHS labelling:[1]
Pictograms	GHS07: Exclamation mark
Signal word	Warning
Hazard statements	H302, H315
Precautionary statements	P264, P270, P280, P301+P317, P302+P352, P321, P330, P332+P317, P362+P364, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

4-Methylacetophenone is an organic compound with the formula CH₃C₆H₄C(O)CH₃. It is related to acetophenone with a methyl group at the 4-position. Two isomers, 2-methylacetophenone and 3-methylacetophenone, are also known. It is a fragrance of commercial significance.

Synthesis and reactions

It is prepared by acetylation of toluene.

Oxidation with hot nitric acid followed bt potassium permanganate gives terephthalic acid. It undergoes most of the reactions of acetophenone: reduction to the alcohol followed by dehydration gives 4-methylstyrene.

Occurrence

4-Methylacetophenone occurs naturally in some woods.