Synthesis 2021; 53(06): 1103-1111
DOI: 10.1055/s-0040-1706473
paper

Facile and Mild Access to Fluorescent Ladder-Type Indolo[3,2-a]carbazoles via Cascade Annulation

Shuangrong Liu
,
You Wu
,
Zhimin Ying
,
Feng Luo
,
En Chen
,
Wenteng Chen
,
Yongping Yu
This project was supported by the National Key Research and Development Program of China (No. 2017YFE0102200) and Alzheimer’s & Aging Research Center, USA for Y. Yu; Zhejiang Provincial Natural Science Foundation of China (No. LY18H300001) and the Multiple Sclerosis National Research Institute, USA for W. Chen.


Abstract

A set of fluorescent ladder-type indolo[3,2-a]carbazoles were rationally developed via cascade annulation of indoles and nitroolefins under mild reaction conditions. Diverse functional groups were tolerated. Moreover, structure–photophysical properties relationships (SPPR) of indolo[3,2-a]carbazoles were observed to be simply tuned by changing the electronic nature of the peripheral substituents.

Supporting Information



Publication History

Received: 30 July 2020

Accepted after revision: 26 August 2020

Article published online:
15 October 2020

© 2020. Thieme. All rights reserved

Georg Thieme Verlag KG
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