University Chemistry ›› 2026, Vol. 41 ›› Issue (4): 250-263.doi: 10.12461/PKU.DXHX202502123

• Survey of Chemistry • Previous Articles     Next Articles

Research Progress on the Synthesis, Structure, and Chemical Reactivity of Borylenes

Ming Chen, Zhenbo Mo   

  1. Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2025-02-26 Accepted:2025-06-05 Published:2026-04-24
  • Contact: Zhenbo Mo E-mail:zhenbo.mo@nankai.eud.cn

Abstract: Borylenes are highly reactive species featuring a low-valent main group element center, characterized by a boron atom in the +I oxidation state. The boron center of borylenes possesses two empty orbitals and a lone pair of electrons; however, monocoordinated free borylenes have yet to be successfully isolated. In recent years, advancements in main group chemistry have led to significant progress in the synthesis and isolation of Lewis base-stabilized dicoordinated and tricoordinated borylenes. These compounds not only serve as donor ligands for coordination with transition metals but also facilitate the activation and transformation of small molecules. This review summarizes the literature reports on the synthetic exploration and reaction chemistry of borylene compounds, and provides perspectives on future research directions in this field.

Key words: Borylenes, Low-valent state, Amphiphilicity, Main group element compounds, Small molecule activation