[C:1]1([C:7]2[C:11]3[CH:12]=[CH:13][C:14]([O:16][CH3:17])=[CH:15][C:10]=3[S:9][CH:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:18](Cl)(=[O:25])[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1.[Cl-].[Al+3].[Cl-].[Cl-]>ClCCCl>[C:18]([C:8]1[S:9][C:10]2[CH:15]=[C:14]([O:16][CH3:17])[CH:13]=[CH:12][C:11]=2[C:7]=1[C:1]1[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1)(=[O:25])[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1To 100 ml. of 1,2-dichloroethane were added 5.0 g. (0.021 mole) of 3-phenyl-6-methoxybenzothiophene and 2.81 g. (0.021 mole) of benzoyl chloride. The mixture was cooled to 0° C., and 2.93 g. (0.022 mole) of aluminum chloride were added. The mixture was stirred for one hour, and ice then was added. The resulting organic layer was separated, washed with water, and evaporated. To the residue were added 250 ml. of methanol and 10 ml. of 5N sodium hydroxide. The mixture was refluxed for 30 minutes, evaporated, and ether and water were added to the residue. The ether layer was separated, washed with 1N sodium hydroxide, 1N hydrochloric acid, and aqueous soidum chloride. The ether layer then was dried over magnesium sulfate, filtered, and evaporated. The residue was crystallized from methanol to obtain 3.77 g. (52 percent) of the title compound, m.p. 94°-95.5° C.
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