Acetic Anhydride → Ethyl 2-(2,4,5-trifluoro-6-methylbenzoyl)-3-ethoxyacrylate
Reaction equation
[CH3:1][C:2]1[C:15]([F:16])=[C:14]([F:17])[CH:13]=[C:12]([F:18])[C:3]=1[C:4]([CH2:6][C:7]([O:9][CH2:10][CH3:11])=[O:8])=[O:5].[C:19]([O:22][C:23](=O)C)(=O)[CH3:20].C(OC(OCC)OCC)C>>[CH3:1][C:2]1[C:15]([F:16])=[C:14]([F:17])[CH:13]=[C:12]([F:18])[C:3]=1[C:4]([C:6](=[CH:23][O:22][CH2:19][CH3:20])[C:7]([O:9][CH2:10][CH3:11])=[O:8])=[O:5]Participants
4
Procedure
To ethyl 2-methyl-3,4,6-trifluorobenzoylacetate (3.2 g) are added acetic anhydride (3.0 g) and triethoxymethane (2.7 g) and the mixture is refluxed for 1 hour. After concentrating, ethyl 2-(2-methyl-3,4,6-trifluorobenzoyl)-3-ethoxyacrylate (3.5 g) is obtained.