反应详情

温度

45 °C

160 g (1 mole) of bromine were added dropwise at room temperature to a solution of 206.5 g (1 mole) of 4-chloromethylsulfonylphenol in 500 ml of glacial acetic acid; the mixture was stirred for a further hour at 45° C and, when it has cooled, was poured onto 1.5 l of ice-water. The product which had precipitated was filtered off and recrystallized from toluene. 185 g (65% of theory) of 2-bromo-4-chloromethylsulfonylphenol were thus obtained as a colorless powder of melting point 158°-160° C.

1. temperaturewhen it has cooled
2. customThe product which had precipitated
3. filtrationwas filtered off
4. customrecrystallized from toluene