[Cl:1][C:2]1[CH:19]=[C:18]([Cl:20])[CH:17]=[CH:16][C:3]=1[O:4][C:5]1[CH:15]=[CH:14][C:8]([O:9][CH:10]([CH3:13])[CH2:11]O)=[CH:7][CH:6]=1.N1C=CC=CC=1.S(Cl)([Cl:29])=O.O>C(OCC)C>[Cl:1][C:2]1[CH:19]=[C:18]([Cl:20])[CH:17]=[CH:16][C:3]=1[O:4][C:5]1[CH:15]=[CH:14][C:8]([O:9][CH:10]([CH3:13])[CH2:11][Cl:29])=[CH:7][CH:6]=13.0 g of β-[4-(2,4-Dichlorophenoxy)phenoxy]propanol and 1.1 g of pyridine were dissolved in 50 ml of anhydrous diethyl ether, and 1.5 g of thionyl chloride was added dropwise to the solution while cooling. The mixture was then heated for 1 hour while refluxing. The reaction mixture was poured into an appropriate amount of water, and the mixture was extracted with diethyl ether. The extract was washed with water and dried over anhydrous sodium sulfate. The ether was removed by distillation and the residue was distilled under reduced pressure to obtain 2.5 g of the desired product having a boiling point of 192° to 194° C./2 mmHg.
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