Bromine → Ethyl [4-(bromoacetyl)phenyl]acetate

反応式

[C:1]([C:4]1[CH:9]=[CH:8][C:7]([CH2:10][C:11]([O:13][CH2:14][CH3:15])=[O:12])=[CH:6][CH:5]=1)(=[O:3])[CH3:2].[Br:16]Br>C(Cl)Cl>[Br:16][CH2:2][C:1]([C:4]1[CH:9]=[CH:8][C:7]([CH2:10][C:11]([O:13][CH2:14][CH3:15])=[O:12])=[CH:6][CH:5]=1)=[O:3]

参加物

実験手順

Ethyl 4-acetyl-phenylacetate from Example 25 Part A (489 mg, 2.4 mmol) was dissolved in CH2Cl2. Bromine (379 mg, 2.4 mmol) was added dropwise. The reaction was stirred at rt for 16 h. The reaction had decolorized from rust red to light yellow. The solvent was evaporated in vacuo to yield 680 mg (99%) of ethyl 2-(4-(2-bromoacetyl)phenyl)acetate as a light yellow oil. The product was used in the next step without further purification. MS 287.0 and 289.0 of equal intensities (M+H)+.