5-bromo-2-methyl-3H-1,2-benzothiazole 1,1-dioxide

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of 5-bromo-2,3-dihydro-1,2-benzisothiazole 1,1-dioxide (200 mg, 0.92 mmol) and potassium carbonate (128 mg, 0.92 mmol) in EtOH (2 mL) was added iodomethane (0.2 mL, 3.2 mmol) and the reaction was stirred at room temperature for 18 hours followed by heating to 50° C. for 2 hours. The reaction was cooled, concentrated in vacuo and diluted with DCM (20 mL). The solution was washed with water (20 mL), dried over Na2SO4 and concentrated in vacuo to afford the title compound as a white solid (1.75 g, 83%). by heating to 50° C. for 2 hours The reaction was cooled concentrated in vacuo diluted with DCM (20 mL) The solution was washed with water (20 mL) dried over Na2SO4 concentrated in vacuo