\(R-CH=C{{H}_{2}}\xrightarrow{{{B}_{2}}{{H}_{6}}}{{(R-C{{H}_{2}}-C{{H}_{2}})}_{3}}-B\,\,\)
\(\xrightarrow{O{{H}^{-}}}R-C{{H}_{2}}-C{{H}_{2}}OH\)