Chinese Journal of Organic Chemistry    

ARTICLE

桥联碳硼烷膦化合物的合成及其在大位阻Suzuki偶联反应中的应用

张国英a, 张雪玥b, 苗金玲*a, 刘广宁a, 王斌*a, 聂永*b   

  1. a济南大学化学化工学院,济南 250022;
    b济南大学智能材料与工程研究院,济南 250022
  • 收稿日期:2026-01-15 修回日期:2026-04-15
  • 基金资助:
    山东省自然科学基金(No. ZR2022MB107)资助项目

Synthesis of Bridged o-Carboranylphosphine Compounds and the Application in Sterically Demanding Suzuki Coupling Reaction

Zhang Guoyinga, Zhang Xueyueb, Miao Jinlinga,*, Liu Guangningb, Wang Bina,*, Nie Yongb,*   

  1. a School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022;
    b Institute for Smart Materials & Engineering, University of Jinan, Jinan, 250022
  • Received:2026-01-15 Revised:2026-04-15
  • Contact: *E-mail: chm_miaojl@ujn.edu.cn, chm_wangb@ujn.edu.cn, chm_niey@ujn.edu.cn.
  • Supported by:
    Natural Science Foundation of Shandong Province (No. ZR2022MB107).

The synthesis, structures, stabilities of bridged carboranyl-diphenylphosphine compounds and the preliminary applications in metal-catalyzed coupling reactions are reported. The lithium salt of o-carborane reacts with 2-(diphenylphosphino)benzaldehyde to produce bridged diphenylphosphinocarboranylmethanol 1 and bis(diphenylphosphino)-o-carboranylbismethanol 2. The chlorination reaction of compound 1 produces compound 3, and compound 1 undergoes slow oxidation in air to produce the corresponding phosphine oxide compound 4. Compounds 1 and 2 undergo slow oxidation in air, while the oxidation stabilities of the chlorinated compound 3 is significantly higher under the same conditions. Compound 1 readily decomposes into 2-(diphenylphosphine)benzaldehyde and o-carborane under basic conditions, whereas the chlorinated product 3 slowly decomposes under the same conditions. The structures of the products were studied by spectroscopic methods or elemental analysis, single crystal X-ray diffraction (1 and 2) and density functional theory methods (1-3). Compound 3 exhibits potential in palladium catalyzed sterically demanding Suzuki coupling reactions. These results provide new possibilities for bridged o-carboranylphosphine compounds in the catalytic synthesis of organic functional molecules.

Key words: carborane, phosphine compounds, synthesis, stability, Suzuki coupling