Water → p-Fluorophenylmethylsulfone

Participants

Reaction Steps

To a well-stirred suspension of 6.95 grams (40 mmol) of sodium hydrosulfite in 100 ml DMF was added 5.10 grams (35.3 mmol) of 4-fluoro benzyl chloride. The mixture was stirred at room temperature for five hours, then brought to 85° C. for 20 hours. The warm mixture was poured into 400 ml ice, and the total volume brought to 700 ml with water. The solid precipitates were isolated to give 2.3 grams (8.1 mmol; 46% yield) of bis(4-fluoro benzyl) sulfone. Recrystallization from toluene gave the pure compound as white needles (top 193° C.).

Provenance & Evidence