Tetrabutylammonium Fluoride → 4-Methylsulfanylthiophene-2-sulfonamide

Participants

Reaction Steps

To a solution of 5-trimethylsilyl-4-methylsulfanylthiophene-2-sulfonamide (660 mg, 2.34 mmol) in THF (10 mL) is added a solution of tetra-butylammonium fluoride (14.0 mL of 1 M in THF, 14.0 mmol). The reaction mixture is stirred at room temperature for 3 hr. The THF is removed under reduced pressure and the residue is dissolved in EtOAc (200 mL). The organic layer is washed with brine then dried (Na2SO4), filtered and concentrated in vacuo. The crude product is chromatographed on silica gel, eluting with Hex:EtOAc (2:1) to afford the title compound (400 mg, 82%).

Provenance & Evidence