Sulfuric Acid → 3-(Pentafluorothio)phenol

Participants

Reaction Conditions

Reaction Steps

5.0 g of 3-pentafluorosulfanylaniline were suspended in 50 ml of a 35% aqueous H2SO4 solution. Then, at 0° C., a solution of 1.57 g of NaNO2 in 5 ml of water was added dropwise over the course of 10 minutes. The mixture was stirred at 0° C. for 40 minutes. Then a solution, cooled to 0° C., of 8.56 g of Cu(NO3)2 in 50 ml of water was added to this suspension. Immediately thereafter, 3.26 g of Cu2O was also added, whereupon marked evolution of gas was observable. 3 extractions each with 100 ml of CH2Cl2 were carried out, the org. phase was washed with 100 ml of a saturated aqueous NaCl solution and dried over MgSO4, and the solvent was removed in vacuo. Chromatography with DIP on a short silica gel column afforded 3.5 g of the phenol as colorless oil.

Provenance & Evidence