Barrelene is hydrogenated with hydrogen gas and Adams' catalyst in ethanol to the fully saturated bicyclo[2.2.2]-octane.
bˈæɹɪlˌiːn ɪz haɪdɹˈɑːdʒənˌeɪɾᵻd wɪð hˈaɪdɹədʒən ɡˈæs ænd ˈædəmz kˈæɾɐlˌɪst ɪn ˈɛθɐnˌɑːl tə ðə fˈʊli sˈætʃɚɹˌeɪɾᵻd baɪsˈɪkloʊ tˈuː.tˈuː.tˈuːˈɑːkteɪn.