有机化学 ›› 2025, Vol. 45 ›› Issue (1): 212-219.DOI: 10.6023/cjoc202406008 上一篇    下一篇

研究论文

次甲基三硼试剂在非对称烯基偕二硼立体选择性合成中的应用研究

杨甜甜a,b, 陈都a,b, 张鹏a,*(), 刘超a,*()   

  1. a 中国科学院兰州化学物理研究所 羰基合成与选择性氧化国家重点实验室 兰州 730000
    b 中国科学院大学 北京 100049
  • 收稿日期:2024-06-07 修回日期:2024-08-11 发布日期:2024-09-26

Application of Triborylmethane Reagent in the Stereoselective Synthesis of Dissymmetric gem-Diborylalkenes

Tiantian Yanga,b, Du Chena,b, Peng Zhanga(), Chao Liua()   

  1. a State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000
    b University of Chinese Academy of Sciences, Beijing 100049
  • Received:2024-06-07 Revised:2024-08-11 Published:2024-09-26
  • Contact: *E-mail: pengzhang@licp.cas.cn; chao.liu@nju.edu.cn

合成了一种新型次甲基三硼试剂, 并在五甲基二乙烯三胺作为添加剂的条件下, 实现了其与醛类化合物的反应, 该反应能够以优异的E式立体选择性和良好的产率直接合成非对称的烯基偕二硼化合物. 该反应的底物兼容性好, 产物分子中的两个含硼基团具有不同的反应活性, 与芳基卤化物进行交叉偶联反应, 可以将其中一个硼基团转化为芳基, 以立体可控的方式构建烯基硼化合物.

关键词: 烯基偕二硼, B—O消除, 硼试剂,

A novel triborylmethane reagent was successfully synthesized, which reacted with aldehydes under the condition of pentamethyldiethylenetriamine (PMDETA) as additive, enabling the synthesis of dissymmetrical gem-diborylalkenes. The method exhibits excellent stereoselectivity and good yields. The reaction has good substrate compatibility and the two boryl moieties in the product have different reactivities. Through cross-coupling with aryl halides, the Bpin moiety can be converted into an aryl group, achieving the stereoselective synthesis of trisubstituted vinylboronates.

Key words: gem-diborylalkenes, B—O elimination, boron reagent, aldehydes