ɹˈiːsənt wˈɜːk hɐz ʃˈoʊn ðæt ˌæljʊmˈɪniəm ælkˈɑːksaɪdz mˌeɪd ɪn sˈɪɾuː fɹʌm tɹˈaɪmɛθəl ˌæljʊmˈɪniəm ɹɪˈeɪdʒənts hæv fˈɑːɹ bˈɛɾɚɹ æktˈɪvᵻɾi ɹᵻkwˈaɪɚɹɪŋ æz lˈɪɾəl æz tˈɛn pɚsˈɛnt lˈoʊdɪŋ.
Recent work has shown that aluminium alkoxides made in situ from trimethyl aluminium reagents have far better activity requiring as little as 10% loading.