The synthesis of a π-conjugated organophosphorus species with bridging P–P unit is reported. Because of the pyramidal geometry of the phosphorus centers, the molecular scaffold provides intriguing electronic communication throughout the three-dimensional structure via π-σ-π conjugation in stepwise fashion. The dimeric species was serendipitously found to be accessible via a reaction of the corresponding P-amino-phosphole precursor through mediation with the hard Lewis acid BF₃. We provide detailed mechanistic studies toward a suitable reaction mechanism that was also verified via computational means. Moreover, we elaborate the utility of the biphosphole via phosphorus functionalization that lends further proof for the step conjugation provided by the unique phosphorus-based molecular architecture.

报道了具有桥联P–P单元的π共轭有机磷物质的合成。由于磷中心的金字塔几何形状，分子支架通过π-σ-π共轭逐步地在整个三维结构中提供了有趣的电子通信。通过与硬路易斯酸BF _3的介导，通过相应的P-氨基-磷酰基前体的反应偶然发现了二聚体物种是可及的。。我们提供了针对合适的反应机理的详细机理研究，该机理也已通过计算手段进行了验证。此外，我们通过磷官能化阐述了双磷的效用，这为由独特的基于磷的分子结构提供的步骤共轭提供了进一步的证据。