materials, and organic synthesis, was described through C—F bond insertion into indoles using CHBr2F. The simple conditions, readily availability of CHBr2F, as well as the versatility of the transformations make this strategy very powerful in synthesizing 3-fluoroquinoline and 3-fluoroquinolone. The mechanistic studies reveal that bromofluorocarbene generated in-situ under basic condition was the
One‐Carbon Ring Expansion of Indoles and Pyrroles: A Straightforward Access to 3‐Fluorinated Quinolines and Pyridines
作者:Huaixuan Guo、Shiqin Qiu、Peng Xu
DOI:10.1002/anie.202317104
日期:2024.1.25
1,1-Dibromoalkanes as bromocarbene sources make one-carbonringexpansion of indoles and pyrroles facile, allowing for direct access to structurally diverse azines, especially the pharmaceutically important 3-fluorinated quinolines and pyridines. This straightforward protocol features bench-stable reagents, a broad range of substrates, and good compatibility with various functional groups.