C(=O)([O-])[O-].[K+].[K+].[CH3:7][O:8][C:9]1[CH:16]=[CH:15][C:12]([C:13]#[N:14])=[CH:11][C:10]=1OCCCN1CCOCC1.Br[CH:28]([CH3:30])[CH3:29]>CN(C)C=O>[CH3:7][O:8][C:9]1[CH:16]=[CH:15][C:12]([C:13]#[N:14])=[CH:11][C:10]=1[CH:28]([CH3:30])[CH3:29]8 g Potassium carbonate and 2.7 g 3-hydroxy-4-methoxybenzonitrile (for synthesis see Example 47) was dissolved in 25 mL dimethylformamide. 2.15 mL 2-Bromopropane was added and the mixture stirred at 85° C. for 3 h. The mixture was concentrated, diluted in ethyl acetate and washed with water (×2) and saturated sodium chloride solution, dried over magnesium sulfate and concentrated.
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