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

活性刘易斯电子对包含供体和受体原子，它们通过相对弱的成键相互作用连接。这些键的断裂导致形成具有配位不饱和的刘易斯酸性和碱性中心的分子，其引起与各种底物的配位或协同活化的独特反应性。三个例子可以说明它们有前途的性质：（i）它们能够激活碳-氢键，这是目前非常有趣的研究领域。(ii)在用异氰酸酯处理时观察到同时形成两个碳-碳键。(iii)与极性单体的低聚或聚合反应在已经低于室温的温和反应条件下成功。

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.