[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8](=[O:15])[CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11].S(Cl)([Cl:19])(=O)=O>C(OCC)C>[Cl:19][CH:9]([C:8]([C:3]1[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=1[Cl:1])=[O:15])[C:10]([O:12][CH2:13][CH3:14])=[O:11]Using ethyl 3-(2-chlorophenyl)-3-oxopropanoate (1.0 g, 5.0 mmol), sulfuryl chloride (810 mg, 6.0 mmol) and diethyl ether (50 mL) as starting materials and in the same manner as in Example 20(i), the title compound (1.0 g, 85%) was obtained as a colorless oil.
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