Thionyl Chloride → 3-Benzoylacrylyl chloride

HRID 1981042Notes

Reaction equation

HRID 1981042 reaction equation
[C:1]([CH:9]=[CH:10][C:11]([OH:13])=O)(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.S(Cl)([Cl:16])=O>C(Cl)Cl>[C:1]([CH:9]=[CH:10][C:11]([Cl:16])=[O:13])(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 24386Thionyl ChlorideHCID 94714Beta-benzoylacrylic acid

Product 1

HCID 573021923-Benzoylacrylyl chloride

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

3-Benzoylacrylic acid (3 g.) was refluxed for 2 hours with 100 ml. of methylene chloride and 10 ml. thionyl chloride. Concentration to dryness gave 3-benzoylacrylyl chloride. Methanol (15 ml.) was added and the resulting solution stirred for 0.5 hour. Ether (35 ml.) was added. The resulting organic mixture was washed in sequence with 15 ml. of water, 15 ml. of 1N sodium hydroxide and twice with 15 ml. of water, concentrated to an oil, the oil triturated with 25 ml. of hot hexane, decanted from insolubles and the hexane concentrated to yield methyl 3-benzoylacrylate (1.9 g., oil, m/e 190).

Workup

  1. concentrationConcentration to dryness

Sources & evidence

ORD record
ord-19726acb77f342cd847422ae1a83f6ec
Source dataset
uspto-grants-1985_04
Patent number
US04511576

Reaction notes

Loading…