Dibenzoylmethane
Title: Dibenzoylmethane
CAS Registry Number: 120-46-7
CAS Name: 1,3-Diphenyl-1,3-propanedione
Additional Names: phenyl-a-hydroxystyryl ketone; w-benzoylacetophenone; phenyl phenacyl ketone; g-hydroxychalkone
Molecular Formula: C15H12O2
Molecular Weight: 224.25
Percent Composition: C 80.34%, H 5.39%, O 14.27%
Line Formula: C6H5COCH2COC6H5
Literature References: Prepd by the action of sodium methylate on benzylideneacetophenone dibromide: Allen et al., Org. Synth. coll. vol. I (2nd ed., 1941) p 205.
Properties: Orthorhombic plates, tablets from petr ether, mp 80°. bp18 219-221°. 100 parts alc dissolve 4.43 parts at 19°. Sol in ether, chloroform, aq NaOH. Equilibrium mixtures in methanol, alcohol, and glacial acetic acid contain 96-98% of the enol form.
Melting point: mp 80°
Boiling point: bp18 219-221°
 
Derivative Type: Monoxime
Molecular Formula: C15H13NO2
Molecular Weight: 239.27
Percent Composition: C 75.30%, H 5.48%, N 5.85%, O 13.37%
Properties: Prepd by adding 4 mols hydroxylamine to 1 mol dibenzoylmethane in alcohol. Prisms from ether, mp 165°. Sparingly sol in cold alcohol.
Melting point: mp 165°

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