10.1021/acs.joc.9b00755.s006
Jing Qian
Jing
Qian
Zhenwei Lin
Zhenwei
Lin
Zaibin Wang
Zaibin
Wang
Zhixing Peng
Zhixing
Peng
Li Wu
Li
Wu
Ping Lu
Ping
Lu
Yanguang Wang
Yanguang
Wang
Copper-Carbene-Triggered
Electrophilic Cyclization
of <i>o</i>‑Hydroxyarylenaminones with 3‑Diazoindolin-2-imines:
Synthesis of 3‑Indolyl‑4<i>H</i>‑chromen-4-ones
and Pyrido[2,3‑<i>b</i>:6,5‑<i>b</i>′]diindoles
American Chemical Society
2019
solvent-dependent emission
3- diazoindolin -2-imines
diindole
photophysical properties
substrate scope
pyrazino
Pyrido
Copper-Carbene-Triggered Electrophilic Cyclization
3- indolyl -4 H
chromen -4-ones
2019-04-19 00:00:00
Dataset
https://acs.figshare.com/articles/dataset/Copper-Carbene-Triggered_Electrophilic_Cyclization_of_i_o_i_Hydroxyarylenaminones_with_3_Diazoindolin-2-imines_Synthesis_of_3_Indolyl_4_i_H_i_chromen-4-ones_and_Pyrido_2_3_i_b_i_6_5_i_b_i_diindoles/8059229
The
Cu(II)-catalyzed electrophilic cyclization reaction between <i>o</i>-hydroxyarylenaminones and 3-diazoindolin-2-imines furnished
3-indolyl-4<i>H</i>-chromen-4-ones in moderate to good yields
with a broad substrate scope. Several pyrido[2,3-<i>b</i>:6,5-<i>b</i>′]diindoles and one pyrazino[2,3-<i>b</i>:5,6-<i>b</i>′]diindole were also obtained
as byproducts in some cases and tested for their photophysical properties.
Pyrido[2,3-<i>b</i>:6,5-<i>b</i>′]diindoles
exhibited solvent-dependent emission, while pyrazino[2,3-<i>b</i>:5,6-<i>b</i>′]diindole emitted strong luminescence
with 25.6% quantum yield in cyclohexane.