有机化学 ›› 2026, Vol. 46 ›› Issue (6): 2458-2463.DOI: 10.6023/cjoc202512030 上一篇    下一篇

研究论文

叔丁基亚砜-噁唑啉配体的合成及其在钯催化不对称烯丙基烷基化反应中的应用

赵凯凯b,, 范润奇a,, 林国强a,b,*(), 冯陈国a,b,*()   

  1. a 上海中医药大学创新中药研究院 上海 201203
    b 中国科学院上海有机化学研究所 上海 200032
  • 收稿日期:2025-12-22 修回日期:2026-01-29 发布日期:2026-03-20
  • 通讯作者: 林国强, 冯陈国
  • 作者简介:

    共同第一作者

  • 基金资助:
    国家重点研发计划(2024YFC3506700); 国家自然科学基金(22271195)

Synthesis of tert-Butyl Sulfoxide-Oxazoline Ligands and Their Application in Palladium-Catalyzed Asymmetric Allylic Alkylation

Kai-Kai Zhaob, Run-Qi Fana, Guo-Qiang Lina,b,*(), Chen-Guo Fenga,b,*()   

  1. a Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203
    b Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032
  • Received:2025-12-22 Revised:2026-01-29 Published:2026-03-20
  • Contact: Guo-Qiang Lin, Chen-Guo Feng
  • About author:

    These authors contributed equally to this work.

  • Supported by:
    National Key R&D Program of China(2024YFC3506700); National Natural Science Foundation of China(22271195)

制备了一类新型叔丁基亚砜-噁唑啉(tBu-SOX)手性配体, 其特点在于通过在硫原子上直接引入大位阻基团来实现立体空间调控. 该系列配体可通过手性邻溴噁唑啉化合物的锂化反应, 随后与手性叔丁基亚磺酸硫代叔丁酯反应便捷合成. 在钯催化的不对称烯丙基烷基化反应中, 该配体展现出优异的催化性能, 可获得最高99%的产率与99%的对映选择性. 进一步通过X射线单晶衍射分析确定了相应Pd(II)配合物的手性空间构型. 研究结果表明, 在硫中心进行立体空间调控是发展亚砜-噁唑啉类手性配体的一种有效策略.

关键词: 不对称催化, 亚砜-噁唑啉配体, 空间调控, 钯催化, 烯丙基烷基化

A novel class of chiral tert-butylsulfinyl-oxazoline (tBu-SOX) ligands, which feature stereospatial control achieved by directly introducing a bulky group at the sulfur center, was prepared. This series of ligands can be conveniently synthesized via lithiation of chiral ortho-bromooxazoline compounds followed by reaction with chiral tert-butyl tert-butanethiosulfinate. In palladium-catalyzed asymmetric allylic alkylation, these ligands exhibited excellent catalytic performance, delivering up to 99% yield and 99% enantioselectivity. Further X-ray crystallographic analysis confirmed the well-defined chiral spatial configuration of the corresponding Pd(II) complex. The results demonstrate that steric modulation at the sulfur center is an effective strategy for advancing the design of sulfinyl-oxazoline chiral ligands.

Key words: asymmetric catalysis, sulfoxide-oxazoline ligand, steric modulation, palladium catalysis, allylic alkylation