2-bromo-4-chloropropiophenone from 4-chlopropiophenone and bromine

[Crystal__Chemist]

Hi
Someone have expirence with synthesis bromoketone for 4-cmc by bromination in glacial acetic acid. How much time it need to fully react and what propotion is good. I think about for one mole of 4-chloropropiophenone use 1.1 mole of elemental bromine. The addition of bromine will take a 1.5 h and after all bromine was added it will be mixing for 4 h. I have made 2-bromo-4-methylpropiophenone by this methode

 

[G.Patton]

Hi, lock at this topic. Proportion is the same for 4-cmc.