amidation of indoles under mild reaction conditions is developed. This methodology affords various indole fused tetracyclic compounds, such as benzo[4,5]imidazo[1,2-a]indoles by intramolecular C2 amidation of N-aryl substituted indoles. This C2 sulfonamidative cyclization also offers convenient access to indolo[2,3-b]indoles and dihydroindolo[2,3-b]quinoline from C3 aryl substituted indoles in good to excellent
在温和的反应条件下,开发了一种新颖且无金属的I 2介导的吲哚分子内C2酰胺化反应。该方法通过N-芳基取代的吲哚的分子内C 2酰胺化而得到各种吲哚稠合的四环化合物,例如苯并[4,5]咪唑并[1,2- a ]吲哚。这种C2磺酰胺化环化反应还可以方便地从C3芳基取代的吲哚获得吲哚[2,3- b ]吲哚和二氢吲哚[2,3- b ]喹啉,收率良好。吲哚[2,3- b ]喹啉还可以通过多米诺环化-脱甲苯磺酸化-芳香化反应序列合成。
Unified Strategy to Access 6<i>H</i>
-Benzofuro[2,3-<i>b</i>
]indoles and 5,6-Dihydroindolo[2,3-<i>b</i>
]indoles via UV Light-Mediated Diradical Cyclization
A unified protocol for the construction of 6H‐benzofuro[2,3‐b]indoles and 5,6‐dihydroindolo[2,3‐b]indolesviaUV light‐mediated diradicalcyclization was developed and preliminary efforts were also made to functionalize at C10b position of 6H‐benzofuro[2,3‐b]indoles. This mild and facile strategy may have great potential in the syntheses of natural products and functional materials.
为6建设的统一的协议ħ -benzofuro [2,3- b ]吲哚和5,6-二氢吲哚并[2,3- b ]吲哚通过UV光介导的环化双基,开发和初步努力也官能制成在6 H-苯并呋喃[2,3- b ]吲哚的C10b位置。这种温和而简便的策略可能在天然产物和功能材料的合成中具有巨大的潜力。