polycyclic aromatic hydrocarbons (P-PAHs) featuring an internal ylidic bond. The method involves anion exchange, alkyne annulation, and deprotonation reactions, enabling the efficient production of cyclic phosphonium salts, which serve as pivotal intermediates in the synthesis of P-PAHs. The alkyne annulation reaction exhibits high regioselectivity, ensuring the successful synthesis of λ5-phosphaphenanthrene
这项工作提出了一种合成一系列具有内部叶立德键的含
磷多环
芳烃(P-PAH)的简单方法。该方法涉及阴离子交换、炔环化和去质子化反应,能够有效生产环状
鏻盐,环状
鏻盐是合成对多环
芳烃的关键中间体。炔成环反应表现出高区域选择性,确保了λ 5 -
磷杂
菲异构体的成功合成。此外,吸电子基团的引入有效稳定了 P-PAH 的内部叶立德键。