Sodium 4-bromobenzene-1-sulfinate → 4-(4-Bromo-benzenesulfonylmethyl)-2-[2-(4-pentafluorosulfanyl-phenyl)-vinyl]-oxazole

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A solution of 4-chloromethyl-2-[2-(4-pentafluorosulfanyl-phenyl)-vinyl]-oxazole (0.30 g, 1.28 mmol) and sodium 4-bromobenzenesulfinate (0.717 g, 2.57 mmol) in N,N-dimethyl formamide (20 ml) was stirred for 3 h at 60° C. After cooling the mixture was poured onto water, extracted with ethyl acetate (3×50 ml), the combined organic layers were washed with water, dried over sodium sulfate, concentrated in vacuo and crystallized from ether/isohexane yielding 4-(4-bromo-benzenesulfonylmethyl)-2-[2-(4-pentafluorosulfanyl-phenyl)-vinyl]-oxazole as white crystalline product. Yield 0.345 g (51%).

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