Σύνθεση 2-Bromo-4'-methylpropiophenone από 4'-methylpropiophenone. Βρωμινοποίηση σε DCM ή GAA.

[whitelabel]

Point5 how can the bromine be dropped to the bottom ?
I read about having a thin water layer at the top when adding br2, how can bromine be added in this case using conventional dropping funnel?