Propiophenone

Propiophenone (shorthand: benzoylethane or BzEt) is an aryl ketone. It is a colorless, sweet-smelling liquid that is insoluble in water, but miscible with organic solvents. It is used in the preparation of other compounds.

Propiophenone

Names
Preferred IUPAC name 1-Phenylpropan-1-one
Other names Ethyl phenyl ketone, BzEt
Identifiers
CAS Number	93-55-0 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:425902 Y
ChEMBL	ChEMBL193446 Y
ChemSpider	6881 Y
ECHA InfoCard	100.002.053
PubChem CID	7148
UNII	E599A8OKQH Y
CompTox Dashboard (EPA)	DTXSID2044470
InChI InChI=1S/C9H10O/c1-2-9(10)8-6-4-3-5-7-8/h3-7H,2H2,1H3 Y Key: KRIOVPPHQSLHCZ-UHFFFAOYSA-N Y InChI=1/C9H10O/c1-2-9(10)8-6-4-3-5-7-8/h3-7H,2H2,1H3 Key: KRIOVPPHQSLHCZ-UHFFFAOYAT
SMILES CCC(=O)c1ccccc1
Properties
Chemical formula	C9H10O
Molar mass	134.178 g·mol−1
Appearance	Colorless liquid
Density	1.0087 g/mL
Melting point	18.6 °C (65.5 °F; 291.8 K)
Boiling point	218 °C (424 °F; 491 K)
Solubility in water	Insoluble
Magnetic susceptibility (χ)	−83.73·10−6 cm3/mol
Related compounds
Related ketones	Acetophenone Butyrophenone
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Production

Propiophenone can be prepared by Friedel–Crafts reaction of propanoyl chloride and benzene. It is also prepared commercially by ketonization of benzoic acid and propionic acid over calcium acetate and alumina at 450–550 °C:^[1]

C₆H₅CO₂H + CH₃CH₂CO₂H → C₆H₅C(O)CH₂CH₃ + CO₂ + H₂O

Ludwig Claisen discovered that α-methoxystyrene forms this compound when heated for an hour at 300 °C (65% yield).^[2][3]

Uses

Phenmetrazine, derived from propiophenone, is an appetite suppressant.

It is an intermediate in the synthesis of the pharmaceuticals phenmetrazine and propoxyphen.^[1][4][5]

Other drugs made from propiophenone include the following: PDM-35, Eprazinone, Methcathinone (leading to ephedrine), Trimebutine, Amfepramone, Diphepanol, Metamfepramone, Etoxadrol, Hydroxyphenamate, Phendimetrazine, Iminophenimide, Bencisteine, Flumecinol, Pyrroliphene, Perisone,