Trans addition of $\mathrm{Br}_2$ to Compound X gave meso-2,3-dibromobutane. What is the identity of

Question

Trans addition of $\mathrm{Br}_2$ to Compound X gave meso-2,3-dibromobutane. What is the identity of compound X ?

Professor PC Thomas Classes · Answer

Trans addition of bromine to trans-but-2-ene yields a meso compound.