有机化学 ›› 2022, Vol. 42 ›› Issue (5): 1483-1492.DOI: 10.6023/cjoc202111041 上一篇    下一篇

研究论文

卡宾催化对亚甲基苯醌的不对称硼化反应的研究

吴逾诸a, 申盼盼a, 段文增b, 马玉道a,*()   

  1. a 山东大学化学与化工学院 济南 250100
    b 聊城大学化学与化工学院 山东聊城 252000
  • 收稿日期:2021-11-30 修回日期:2022-01-13 发布日期:2022-01-27
  • 通讯作者: 马玉道
  • 基金资助:
    山东省自然科学基金(ZR2019MB044)

Asymmetric Boration of para-Quinone Methides Catalyzed by N-Heterocyclic Carbene

Yuzhu Wua, Panpan Shena, Wenzeng Duanb, Yudao Maa()   

  1. a School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100
    b School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252000
  • Received:2021-11-30 Revised:2022-01-13 Published:2022-01-27
  • Contact: Yudao Ma
  • Supported by:
    National Natural Science Foundation of Shandong Province(ZR2019MB044)

使用商业化的手性三氮唑盐和联硼酸频哪醇酯[B2(pin)2], 实现了N-杂环卡宾催化的对亚甲基苯醌的1,6-不对称硼加成反应. 该反应条件温和, 底物适用范围广, 官能团耐受性好, 且有良好的反应收率及对映选择性. 值得注意的是, 在无过渡金属存在下, 即使催化剂用量降至底物的0.1 mol%, 反应仍能保持高收率和高对映选择性.

关键词: 不对称催化, 有机催化, 卡宾, 硼化合物, 对亚甲基苯醌

The first carbene-catalyzed enantioselective 1,6-conjugate addition of boron to para-quinone methides was achieved by using the commercially available chiral triazolium and bis(pinacolato)diboron. The main features of this reaction include mild conditions, broad scope of substrates, excellent functional group tolerance, as well as good yield and enantioselectivity. Notably, in the absence of any transition metals, the reaction proceeded very well even with 0.1 mol% of catalyst loading without obvious erosion of yield and enantioselectivity, albeit longer reaction time was required.