Reaction equation
[O:1]1[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=2[N:4]([C:11](=[O:16])[C:12]([F:15])([F:14])[F:13])[CH2:3][CH2:2]1.[Br:17][C:18]1[CH:19]=[CH:20][C:21]([Cl:27])=[C:22]([CH:26]=1)[C:23](Cl)=[O:24].[Al+3].[Cl-].[Cl-].[Cl-]>ClCCl>[Br:17][C:18]1[CH:19]=[CH:20][C:21]([Cl:27])=[C:22]([CH:26]=1)[C:23]([C:9]1[CH:8]=[CH:7][C:6]2[O:1][CH2:2][CH2:3][N:4]([C:11](=[O:16])[C:12]([F:15])([F:13])[F:14])[C:5]=2[CH:10]=1)=[O:24]Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
To a stirred solution of 1-(2,3-dihydro-benzo[1,4]oxazin-4-yl)-2,2,2-trifluoro-ethanone (6.5 g, 28.1 mmol) in dichloromethane (45 mL) was added 5-bromo-2-chlorobenzoyl chloride (8.54 g, 33.7 mmol) in dichloromethane (35 mL) and AlCl3 (5.61 g, 42.2 mmol) at 0° C. After 2 h, the reaction mixture was brought to room temperature and stirred overnight. The reaction was quenched by pouring over crushed ice and extracted with dichloromethane (2×50 mL). The organic layer was washed with aq. NaHCO3 (30 mL), H2O (20 mL), and the solvent evaporated to get the crude product which was purified by silica gel column chromatography to give 1-[6-(5-bromo-2-chloro-benzoyl)-2,3-dihydro-benzo[1,4]oxazin-4-yl]-2,2,2-trifluoro-ethanone (10.0 g).
Workup
- customwas brought to room temperature
- customThe reaction was quenched
- additionby pouring
- customover crushed ice
- extractionextracted with dichloromethane (2×50 mL)
- washThe organic layer was washed with aq. NaHCO3 (30 mL), H2O (20 mL)
- customthe solvent evaporated
- customto get the crude product which
- customwas purified by silica gel column chromatography
Sources & evidence
- ORD record
- ord-9e8d94565faf43948f9b5faeb25898aa
- Source dataset
- uspto-grants-2014_09
- Patent number
- US08828951B2
Linked notes
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