[Br:1][C:2]1[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][C:3]=1[O:9][CH3:10].Br[CH2:12][CH2:13][CH3:14].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.O>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH2:12][CH2:13][CH3:14])=[CH:4][C:3]=1[O:9][CH3:10]1.50 g (7.39 mmol) 4-bromo-3-methoxy-phenol are added to 1.36 g (11.1 mmol) 1-bromopropane in 10 mL DMF. 2.04 g (14.8 mmol) K2CO3 are added and the mixture is stirred at 80° C. for 12 h. After that time, the mixture is diluted with water and extracted with DCM. The organic layer is dried over sodium sulphate and the solvent is removed in vacuo.
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