Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Letter
Indium-catalyzed Annulation of Indoles with Ethyl (2-Ethynylaryl)methyl Carbonates: Synthesis and Photoluminescent Properties of Aryl- and Heteroaryl[b]carbazoles
Yuta NagaseTakuhiro MiyamuraKensuke InoueTeruhisa Tsuchimoto
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2013 Volume 42 Issue 10 Pages 1170-1172

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Abstract

Two successive carbon–carbon bond-forming annulation of indoles with ethyl (2-ethynylaryl)methyl carbonates and their heteroaryl analogs under indium catalysis provided aryl- and heteroaryl[b]carbazoles, photoluminescent properties of which were then evaluated and compared with those of the corresponding [a]- and [c]-types, thereby showing that the order of light-emitting efficiency is [a]- < [b]- < [c]-type.

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© 2013 The Chemical Society of Japan
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