%0 Generic
%A Qian, Jing
%A Lin, Zhenwei
%A Wang, Zaibin
%A Peng, Zhixing
%A Wu, Li
%A Lu, Ping
%A Wang, Yanguang
%D 2019
%T Copper-Carbene-Triggered
Electrophilic Cyclization
of o‑Hydroxyarylenaminones with 3‑Diazoindolin-2-imines:
Synthesis of 3‑Indolyl‑4H‑chromen-4-ones
and Pyrido[2,3‑b:6,5‑b′]diindoles
%U 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/8059220
%R 10.1021/acs.joc.9b00755.s003
%2 https://acs.figshare.com/ndownloader/files/15018020
%K solvent-dependent emission
%K 3- diazoindolin -2-imines
%K diindole
%K photophysical properties
%K substrate scope
%K pyrazino
%K Pyrido
%K Copper-Carbene-Triggered Electrophilic Cyclization
%K 3- indolyl -4 H
%K chromen -4-ones
%X The
Cu(II)-catalyzed electrophilic cyclization reaction between o-hydroxyarylenaminones and 3-diazoindolin-2-imines furnished
3-indolyl-4H-chromen-4-ones in moderate to good yields
with a broad substrate scope. Several pyrido[2,3-b:6,5-b′]diindoles and one pyrazino[2,3-b:5,6-b′]diindole were also obtained
as byproducts in some cases and tested for their photophysical properties.
Pyrido[2,3-b:6,5-b′]diindoles
exhibited solvent-dependent emission, while pyrazino[2,3-b:5,6-b′]diindole emitted strong luminescence
with 25.6% quantum yield in cyclohexane.
%I ACS Publications