UEBER DIE ALDEHYDSELEKTIVITAET VON ALKYLKOMPLEXEN VON SCANDIUM, YTTRIUM, LANTHAN UND LANTHANIDEN IN ALDEHYD/KETON-KONKURRENZVERSUCHEN

Article abstract of DOI:10.1016/S0040-4039(00)89293-X

In-situ prepared alkyl complexes Hal2M-Alk (Alk = Me, Bu) of the f-metals Ce, Pr, Nd, Sm, Gd exhibit very low selectivity in competition experiments between heptanal and diethylketone in THF, whereas the selectivity of complexes Hal2M-Me (M = Sc, Y, La) is distinctly higher with decreasing tendency in the sequence Sc>Y>La.These and previously reported results led to a general working hypothesis about the reasons of the aldehyde-selectivity of transition metal alkyls.