2-Chloro-1-fluoro-4-nitrobenzene → 2-chloro-1-(methylsulfanyl)-4-nitrobenzene

Beteiligte Stoffe

Reaktionsschritte

To a solution of 4-fluoro-3-chloronitrobenzene (27 g, 156 mmol) in DMF (150 mL) at room temperature was added 5-tert-butyl-4-hydroxy-2-methylphenyl sulfide (100 mg) followed by sodium thiomethoxide (NaSMe) (10 g, 143 mmol) and the reaction was stirred for 6 h. The DMF was removed in vacuo and the residue was partitioned between ether (1 L) and water (1 L). The ether layer was washed with water (1 L) and brine (1 L), dried (MgSO4) and the solvent was removed under reduced pressure. The residue was purified by column chromatography (SiO2; DCM: pentane 1:5 increasing polarity to 3:7) to give the title compound (15.22 g, 49%) as a yellow solid; δH (400 MHz, CDCl3) 2.53 (3H, s), 7.20 (1H, d), 8.09 (1H, dd), 8.20 (1H, d).

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