Chemistry - Halogen Derivative Question with Solution | TestHub

The addition of bromtextne to$\text{E}-$but$-2-$ene gives$\left(\text{R},\text{S}\right)-2-3-$dibromobutane, and it is always anti as bromtextne atoms added are on opposite sides.

In$\left(\text{E}\right)-\text{b}\text{u}\text{t}-2-\text{e}\text{n}\text{e}$addition of$\text{B}{\text{r}}_2$occurs as:



$\left(\text{R},\text{S}\right)-2-3-$dibromobutane.