and the Clemmensen reduction removes carbonyl groups from aldehydes and ketones to form alkanes or alkyl-substituted compounds e.g.:
ænd ðə klˈɛmɛnsən ɹᵻdˈʌkʃən ɹᵻmˈuːvz kˈɑːɹbənˌaɪl ɡɹˈuːps fɹʌm ˈældɪhˌaɪdz ænd kˈɛtoʊnz tə fˈɔːɹm ˈælkeɪnz ɔːɹ ˈælkaɪlsˈʌbstɪtˌuːɾᵻd kˈɑːmpaʊndz ˈiː.dʒˈiː.: