反应详情

To 1 mole of m-chloropropiophenone was heated to 70±5° C., bromine was added dropwise under stirring. The reaction temperature was kept at 70±5° C. during the addition of bromine and kept for 5.5 hours after the addition. m-chloro-α-bromopropiophenone (compound of formula (II)) was obtained.

1. additionafter the addition