有机化学 ›› 2026, Vol. 46 ›› Issue (4): 1320-1329.DOI: 10.6023/cjoc202601011 上一篇    下一篇

综述与进展

配体-金属电荷转移驱动的光促金属催化芳基羧酸脱羧转化

吉伟文, 金健*()   

  1. 中国科学院上海有机化学研究所 生命过程小分子调控全国重点实验室 生命过程小分子调控全国重点实验室 上海 200032
  • 收稿日期:2026-01-09 修回日期:2026-02-08 发布日期:2026-03-20
  • 通讯作者: 金健
  • 基金资助:
    国家重点研发计划(2023YFA0914500)

Ligand-to-Metal Charge Transfer-Driven Photoinduced Metal-Catalyzed Decarboxylative Transformation of Aryl Carboxylic Acids

Weiwen Ji, Jian Jin*()   

  1. State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032
  • Received:2026-01-09 Revised:2026-02-08 Published:2026-03-20
  • Contact: Jian Jin
  • Supported by:
    National Key Research and Development Program of China(2023YFA0914500)

羧酸是一类来源丰富、结构多样、性质稳定、价格友好的化学物质, 是仅次于胺的第二大类商业可得有机分子砌块. 发展光催化自由基脱羧反应, 将羧酸转化为各类高附加值化合物, 是过去十余年有机化学的热门研究领域之一. 到目前为止, 光催化烷基羧酸的脱羧转化研究已经取得较大进展, 而芳基羧酸相关研究的进展较为迟缓, 主要原因是芳基羧基自由基脱羧较慢, 后续的芳基自由基活性很高, 存在诸多竞争反应. 在过去五年, 配体-金属电荷转移(LMCT)驱动的光促金属催化/介导的芳基羧酸(盐)脱羧转化研究已取得一些进展, 包括光促铜催化/介导的卤化、羟化、磺酰亚胺化、硼化、卤磺酰化、噻蒽化、烯丙基化、硫醚化和氢化, 以及光促铁催化的硫醚化和溴化, 但是仍需要通过巧妙设计、调控反应参数, 发展更多的脱羧反应类型, 比如将配体-金属电荷转移与过渡金属催化相结合, 实现芳基羧酸的脱羧交叉偶联反应.

关键词: 配体-金属电荷转移驱动, 光促, 金属催化, 芳基羧酸, 脱羧转化, 自由基反应

Carboxylic acids are a class of chemicals with abundant sources, structural diversity, stability, and cost- effectiveness, representing the second largest class of commercially available organic building blocks after amines. The past decade has witnessed the rapid development of photoinduced radical decarboxylative transformation of alkyl carboxylic acids. However, the progress in the decarboxylative transformation of aryl carboxylic acids is slow, mianly due to the relatively reluctant decarboxylation of O-centered aryl carboxylate radicals and the subsequent very reactive aryl radicals, suffering severe competitive pathways. In the latest five years, ligand-to-metal charge transfer (LMCT)-driven photoinduced metal- catalyzed/mediated decarboxylative transformation of aryl carboxylic acids (carboxylates) has gained some achievements, such as copper-catalyzed/mediated halogenation, hydroxylation, sulfoximination, borylation, halosulfonylation, thianthrenation, allylation, thiolation and hydrogenation, iron-catalyzed thiolation and bromination. Further development is highly expected to realize new types of reactions through smart design and control of reaction conditions. For instance, the merger of LMCT and transition metal catalysis might provide an opportunity to achieve the decarboxylative cross-coupling of aryl carboxylic acids.

Key words: ligand-to-metal charge transfer (LMCT)-driven, photoinduced, metal catalysis, aryl carboxylic acid, decarboxylative transformation, radical reaction