Cl.ClCC[N:5]1[CH2:10][CH2:9][O:8][CH2:7][CH2:6]1.[S:11]1[C:15]2=[CH:16][CH:17]=[CH:18][C:19](O)=[C:14]2[CH:13]=[CH:12]1.[C:21](=[O:24])([O-])[O-].[K+].[K+].O.[CH3:28]N(C)C=O>>[S:11]1[C:15]2[CH:16]=[CH:17][CH:18]=[C:19]([O:24][CH2:21][CH2:28][CH:9]3[O:8][CH2:7][CH2:6][NH:5][CH2:10]3)[C:14]=2[CH:13]=[CH:12]14-(2-Chloroethyl)morpholine hydrochloride (0.74 g), 1-benzothiophene-4-ol (0.5 g) and potassium carbonate (1.1 g) in dimethylformamide (15 ml) were heated and stirred at 80° C. for 6 h. After cooling, the mixture was poured into water and extracted twice with ethyl acetate. The combined solvent phase was washed twice with brine, dried (magnesium sulphate) and evaporated to give the product (0.7 g).
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