Dimethylformamide → Methyl 5-methanesulfonyl-4-(4-methoxysulfinyl-3-pentafluorosulfanylphenoxy)-2-methylbenzoate

Participants

Reaction Conditions

Reaction Steps

3.0 g of sodium 4-(2-methanesulfonyl-4-methoxycarbonyl-5-methyl-phenoxy)-2-pentafluorosulfanylbenzenesulfinate (example 4) were dissolved in 100 ml of anhydrous DMF, 4.0 g of CH31 were added and the mixture was stirred at 45° C. for 9 h. The reaction mixture was subsequently left to stand at RT for 2 days. The solvent was then removed under reduced pressure and the residue taken up with 100 ml of water and 100 ml of EA. 50 ml of a 5% aqueous NaHSO4 solution were then added and the phases were separated. Subsequently, the mixture was extracted 3 times with 100 ml each time of EA. The mixture was dried over MgSO4, the solvent was removed under reduced pressure and the residue was chromatographed on silica gel with 1:1 MTB/DIP. 0.59 g of methyl 5-methanesulfonyl-4-(4-methanesulfonyl-3-pentafluorosulfanylphenoxy)-2-methylbenzoate and 0.49 g of methyl 5-methanesulfonyl-4-(4-methoxysulfinyl-3-pentafluorosulfanylphenoxy)-2-methylbenzoate were obtained.

Provenance & Evidence