Compounds Consisting of Group 13 Lewis Acids and Nitrogen based Lewis Bases for Bifunctional Activation (A02)

活性Lewis对含有施主原子和受主原子，它们通过相对较弱的成键作用连接在一起。这些键的断裂导致形成具有配位不饱和Lewis酸碱中心的分子，这些分子与各种底物的配位或协同激活产生独特的反应活性。三个例子可以说明它们很有前途的性质：(I)它们能够激活碳氢键，这是目前非常感兴趣的研究领域。(Ii)用异氰酸酯处理时，观察到同时形成两个碳-碳键。(Iii)在已经低于室温的温和反应条件下，与极性单体的齐聚或聚合反应成功。

Active Lewis pairs contain donor and acceptor atoms, which are connected by relatively weak bonding interactions. Cleavage of these bonds results in the formation of molecules with coordinatively unsaturated Lewis acidic and basic centers, which cause a unique reactivity with the coordination or cooperative activation of various substrates. Three examples may illustrate their promising properties: (i) They are able to activate carbon-hydrogen bonds which currently is a highly interesting research field. (ii) The simultaneous formation of two carbon-carbon bonds was observed upon treatment with an isocyanate. (iii) Oligomerisation or polymerisation reactions with polar monomers succeeded under mild reaction conditions already below room temperature.