[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[OH:8].C(=O)([O-])[O-].[K+].[K+].Cl[CH:16]1[CH2:21][CH2:20][CH2:19][CH2:18][C:17]1=[O:22].O>CN(C)C=O>[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[O:8][CH:16]1[CH2:21][CH2:20][CH2:19][CH2:18][C:17]1=[O:22]A mixture of 2-bromophenol (5 g), potassium carbonate (5.99 g) and 2-chlorocyclohexanone (4.22 g) in N,N-dimethylformamide was stirred at 60° C. for 4 hours. The reaction mixture was poured into cold water and the separated oil was extracted with diethyl ether. The extract was washed with water, dried over sodium sulfate and concentrated in vacuo. The residue was crystallized from n-hexane to give 2-(2-bromophenoxy)cyclohexanone (4.36 g).
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