[H-].[Na+].[CH3:3][O:4][C:5]1[CH:10]=[CH:9][C:8]([SH:11])=[CH:7][CH:6]=1.Cl[C:13]1[CH:18]=[CH:17][C:16]([N+:19]([O-:21])=[O:20])=[CH:15][CH:14]=1>CN(C=O)C>[CH3:3][O:4][C:5]1[CH:10]=[CH:9][C:8]([S:11][C:13]2[CH:18]=[CH:17][C:16]([N+:19]([O-:21])=[O:20])=[CH:15][CH:14]=2)=[CH:7][CH:6]=1To a suspension of NaH (4.2 g) in 100 mL of dry DMF under nitrogen was slowly added 14.02 g of 4-methoxythiophenol. The reaction mix was stirred until no further gas evolution occurred (circa 20 minutes). To this solution was added 15.76 g of 4-chloronitrobenzene dissolved in 100 ml of dry DMF, after which the mixture was heated to 120° C. for one hour. The reaction mix became red in colour during this time. The mixture was then cooled to room temperature and poured over 1000 g of crushed ice. The resulting yellow solid was filtered, washed several times with water, and dried to afford 25.29 g (96%) of 4-(4-methoxy-phenylsulfanyl)-nitrobenzene as a yellow solid. MS M+H; 264.
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