Chinese Journal of Organic Chemistry ›› 2022, Vol. 42 ›› Issue (11): 3816-3823.DOI: 10.6023/cjoc202205039 Previous Articles     Next Articles

ARTICLES

铑催化的邻苯二甲酸酐与环状2-重氮-1,3-二酮和甲醇的串联C—H活化/跨环偶联/环化反应合成酯基官能化的并环异香豆素类化合物的研究

商铭洲a, 张兰兰b, 陈淼淼b, 胡汪成b, 何心伟b,*(), 陆红健a   

  1. a南京大学化学化工学院 南京 210093
    b安徽师范大学化学与材料科学学院 安徽芜湖 241002
  • 收稿日期:2022-05-22 修回日期:2022-07-03 发布日期:2022-07-13
  • 通讯作者: 何心伟
  • 基金资助:
    国家自然科学基金(21772001); 国家自然科学基金(22071100); 大学生创新创业训练计划(202110370035)

Synthesis of Esterified/Fused Isocoumarins via Rh-Catalyzed C—H Activation/Transannulative Coupling/Annulation of Phthalic Anhydrides with Cyclic 2-Diazo-1,3-diketones and Methanol

Mingzhou Shanga, Lanlan Zhangb, Miaomiao Chenb, Wangcheng Hub, Xinwei Heb(), Hongjian Lua   

  1. aSchool of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093
    bCollege of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000
  • Received:2022-05-22 Revised:2022-07-03 Published:2022-07-13
  • Contact: Xinwei He
  • Supported by:
    National Natural Science Foundation of China(21772001); National Natural Science Foundation of China(22071100); National Undergraduate Training Program for Innovation and Entrepreneurship(202110370035)

A rhodium(III)-catalyzed cascade reaction of phthalic anhydrides with cyclic 2-diazo-1,3-diketones and methanol for modular access to esterified cyclohexenone-fused isocoumarins has been developed. This strategy involves the process of one C—C and two C—O bonds formation through C—H activation, transannulative coupling and subsequent annulation process. Furthermore, no additive and base are needed in this transformation, and interestingly, the reaction could proceed well under air atmosphere with broad substrate and good functional groups tolerance.

Key words: annulation, C—H activation, diazo compound, isocoumarin, phthalic anhydride