ɡɹˈuːps, sˈʌtʃ ɐz ˈælkiːnz ænd ˈælkaɪnz, ðæt nˈoːɹməli pˈoʊz ɐ pɹˈɑːbləm fɔːɹ ɹᵻdˈʌkʃən baɪ ˈʌðɚ mˈiːnz hæv nˈoʊ ɹɪɐktˈɪvᵻɾi ˌʌndɚ ðiːz kəndˈɪʃənz.
Groups, such as alkenes and alkynes, that normally pose a problem for reduction by other means have no reactivity under these conditions.