Reactions of ytterbium and magnesium gallylene complexes with carbon dioxide and diphenylketene

摘要

Reactivity of ytterbium and magnesium complexes of gallylenes against carbon dioxide and diphenylketene has been assessed. Ytterbium complex of redox-active gallylene {(dpp-bian)Ga}2Yb(DME)2 (dpp-bian = 1,2-bis(2,6-diiso-propylphenyl)iminoacenaphthene) on treatment with CO2 gives complex (dpp-bian)Ga(DME)Me, while the treatment of magnesium-stabilized gallylene {(dpp-bian)Ga}2Mg(DME)2 with Ph2CCO affords cycloadduct (dpp-bian)(Ph2CCO)GaMe.