$\begin{array}{*{20}{c}} {\begin{array}{*{20}{c}} {\,\,\,\,\,\,\,C{H_3}} \\ | \end{array}} \\ {C{H_3} - C - C{H_3}} \\ | \\ H \end{array}{\mkern 1mu} $ $\mathop {\xrightarrow{{C{H_3}OBr}}}\limits_{C{H_3}OH} $