有机化学    

研究论文

光诱导重氮酸酯与偕二氟烯烃[1 + 2]环加成合成二氟环丙烷

慕晓楠a,b, 管敏慧b, 牛雨龙b, 陈浩b,*, 李传莹a,*, 王磊b,c,*   

  1. a浙江理工大学化学系 杭州 310018;
    b台州学院高研院和药学院 台州 318000;
    c杭州师范大学材料与化学化工学院,有机硅化学及材料技术教育部重点实验室 杭州 311121
  • 收稿日期:2024-06-20 修回日期:2024-07-25
  • 基金资助:
    国家自然科学基金 (No. 22071171)和浙江省自然科学基金(LZ22B020003)资助项目.

Synthesis of difluorocyclopropanes via a photoinduced [1 + 2] cycloaddition of diazo esters with gem-difluoroalkenes

Xiaonan Mua,b, Minhui Guanb, Yulong Niub, Hao Chenb,*, Chuanying Lia,*, Lei Wangb,c,*   

  1. aDepartment of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China;
    bAdvanced Research Institute & School of Pharmaceutical Sciences, Taizhou University,Taizhou, Zhejiang 318000, P. R. China;
    bCollege of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, P. R. China
  • Received:2024-06-20 Revised:2024-07-25
  • Contact: *E-mail: licy@zstu.edu.cn; leiwang88@hotmail.com; haochenchemical@163.com
  • Supported by:
    National Natural Science Foundation of China (22071171) and the Natural Science Foundation of Zhejiang Province (LZ22B020003)

在可见光促进下,偕二氟烯烃与芳基重氮酸酯的[1 + 2]环加成为合成1,1-偕二氟环丙烷提供了一条有效而重要的途径。反应条件温和,操作简单。系列重氮酸酯和偕二氟烯烃都能适用于该反应(36个例子),并以良好的收率和优异的非对映选择性(> 20:1)得到相应的目标产物。

关键词: 有机光催化, 偕二氟烯烃, 重氮酸酯, [1+2]环加成, 1,1-偕二氟环丙烷

A visible-light-promoted [1 + 2] cycloaddition of gem-difluoroalkenes with aryl diazo esters provides an efficient and important route to 1,1-difluorocyclopropanes. The reaction conditions are mild, and the operation is very simple. A number of diazo esters and gem-difluoroalkenes are suitable for this reaction (36 examples), providing the desired products in good yields with excellent diastereoselectivity (> 20: 1).

Key words: Organic photochemistry, gem-difluoroalkenes, diazo esters, [1 + 2] cycloaddition, 1,1-difluorocyclopropanes