Benzenesulfenyl chloride → 2-(m-Chlorophenyl)-5-(phenylthio)thiophene

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Reaction Steps

A mixture of 89 g (0.46 mole) of 2-(m-chlorophenyl)thiophene, 400 ml of reagent carbon tetrachloride, 54 ml (67 g, 0.46 mole) of benzenesulfenyl chloride and 0.05 g of iron powder was allowed to stand for four days at room temperature. A further 12 ml (15 g, 0.10 mole) of benzenesulfenyl chloride and 0.05 g of iron powder were added. After four days the carbon tetrachloride was removed by distillation. The residue was distilled at reduced pressure to give 30 g (22%) of 2-(m-chlorophenyl)-5-(phenylthio)thiophene, b.p. 200°-205° C. (0.15 mm).

Provenance & Evidence