Thionyl Chloride → 5-(Chloromethyl)-1-[4-(pentafluoro-lambda6-sulfanyl)phenyl]-1H-tetrazole

Participants

Reaction Steps

Thionyl chloride (1.72 g, 14.4 mmol) was added to a stirred solution of {1-[4-(pentafluoro-λ6-sulfanyl)phenyl]-1H-tetrazol-5-yl}methanol (Intermediate 44, 3.50 g, 11.6 mmol) in toluene (40 mL), SOCl2 at room temperature. The reaction mixture was stirred for 4 hr at reflux. The reaction mixture was concentrated under vacuum. The residue was diluted with DCM and washed with ice-water, saturated aq NaHCO3 and brine solution, dried over anhydrous Na2SO4, and concentrated under reduced pressure to give the crude compound. This was purified by column chromatography (100-200 mesh silica gel), eluted with 20%-30% EtOAc/pet-ether to give the title compound as a brown gum (3.50 g).

Provenance & Evidence