(CABCs) is reported. The key synthetic step involves an intramolecular [4+2] cyclization of an anthracene derivative with an alkyne. This synthetic approach allows for the attachment of both aryl and alkyl groups on the nitrogen atom. When used as ligand, two of the barrelene hydrogens are in close contact with the metal, which could stabilize low valent catalytic intermediates.
报道了一个新的环状(烷基)(
氨基)卡宾家族,我们将其命名为环状(
氨基)(barrelene)卡宾(
CABCs)。关键合成步骤涉及
蒽衍
生物与
炔烃的分子内 [4+2] 环化。这种合成方法允许在氮原子上连接芳基和烷基。当用作
配体时,两个桶烯氢与
金属紧密接触,可以稳定低价催化中间体。