Dimethyl Sulfoxide → HCID 66775093, compound

Participants

Reaction Steps

KOH (112.2 mg, 2.00 mmol, crushed pellets) was added to DMSO (10 mL, dried over 4A molecular sieve) and stirred for 5 min. Tetrazole (28.0 mg, 0.4 mmol) was added to the mixture, which was then stirred for 2 h. 3-(4-Bromomethylphenyl)-5-iso-butyl-N-tert-butylthiophene-2-sulfonamide (130 mg, 0.292 mmol, see step (b) above) was added, the mixture was cooled briefly and stirred for an additional hour before water (50 mL) was added. The reaction mixture was extracted with ethyl acetate (250 mL) and the extract was washed with water (2×50 mL) and brine (50 mL). The organic phase was dried over MgSO4 and the solvent was removed in vacuo. The residue was purified on column chromatography using hexane:acetone (3:1) as eluent to give the sub-title compound (28.6 mg, 0.066 mmol, 23% yield).

Provenance & Evidence