126 / 2023-10-12 16:03:26

Single-phosphorus Atom Transfer to Metal Carbyne Complexes: A New Route toward Strained Metalla-phosphacycles

“P” transfer; Metalla-phosphacycles; Metal Carbyne

Phosphorus in Synthetic Chemistry > 2) Phosphorus compounds as ligands

Heterocyclic compounds play essential roles in numerous aspects of chemistry. The incorporation of phosphorus atoms into heterocycles provides properties well-suited to electronic, optical, biological, pharmaceutical, material, and catalytic applications. Although researchers have achieved great success in the development and utilization of phosphine-containing metal heterocyclic compounds, relatively few studies have been carried out on the strategy of developing phosphine-containing heterocyclic compounds, mainly limited by the great challenge of ring tension to structural stability. ^1,2 The reported synthesis of the smallest metalla-phosphacycle, the metalla-phosphacyclopropene, mainly limited to the reactions of phosphaalkyne with transition-metal complexes. Among these reactions, both phosphaalkyne and transition-metal complexes were stabilized by steric hindrance ligands.³ Recently, we developed a new strategy that utilizes the phosphaetynolate anion as the P source for synthesizing metalla-phosphacyclopropene via single-P atom transfer to metal carbyne. Currently, we are investigating the reactivity of the newly synthesized metalla-phosphacyclopropene toward small molecules and unsaturated bonds.