Question

Does propene react with bromine?

Answer 1

Yes, propene reacts with bromine.

Under these conditions, alkenes undergo halogen replacement reactions and can decolorize bromine water slowly.

However, we can often get an isomer with bromine attached to the second carbon when propene reacts with bromine.

$$\begin{gathered} {\mathrm{CH}}_3\mathrm{CH}={\mathrm{CH}}_2\left(\mathrm{g}\right)+{\mathrm{Br}}_2\left(\mathrm{g}\right)\underset{}{\overset{}{\to }}{\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{Br}\right){\mathrm{CH}}_2\left(\mathrm{Br}\right)\left(\mathrm{l}\right) \\ \left(\mathrm{propene}\right)\left(\mathrm{bromine}\right)(1,2\mathrm{dibromopropane}) \end{gathered}$$