Volume 53, Issue 37 pp. 9889-9892
Communication

One-Pot Synthesis of Highly Substituted Polyheteroaromatic Compounds by Rhodium(III)-Catalyzed Multiple CH Activation and Annulation

Jayachandran Jayakumar

Jayachandran Jayakumar

Department of Chemistry, National Tsing Hua University, Hsinchu 30013 (Taiwan) http://mx.nthu.edu.tw/%7Echcheng

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Dr. Kanniyappan Parthasarathy

Dr. Kanniyappan Parthasarathy

Department of Chemistry, National Tsing Hua University, Hsinchu 30013 (Taiwan) http://mx.nthu.edu.tw/%7Echcheng

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Yi-Hsiang Chen

Yi-Hsiang Chen

Department of Chemistry, National Tsing Hua University, Hsinchu 30013 (Taiwan) http://mx.nthu.edu.tw/%7Echcheng

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Tai-Hua Lee

Tai-Hua Lee

Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30013 (Taiwan)

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Prof. Dr. Shih-Ching Chuang

Corresponding Author

Prof. Dr. Shih-Ching Chuang

Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30013 (Taiwan)

Shih-Ching Chuang, Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30013 (Taiwan)

Chien-Hong Cheng, Department of Chemistry, National Tsing Hua University, Hsinchu 30013 (Taiwan) http://mx.nthu.edu.tw/%7Echcheng

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Prof. Dr. Chien-Hong Cheng

Corresponding Author

Prof. Dr. Chien-Hong Cheng

Department of Chemistry, National Tsing Hua University, Hsinchu 30013 (Taiwan) http://mx.nthu.edu.tw/%7Echcheng

Shih-Ching Chuang, Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30013 (Taiwan)

Chien-Hong Cheng, Department of Chemistry, National Tsing Hua University, Hsinchu 30013 (Taiwan) http://mx.nthu.edu.tw/%7Echcheng

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First published: 17 July 2014
Citations: 154

We thank the Ministry of Science and Technology of the Republic of China (NSC 102-2628-M-007-005) for support of this research.

Graphical Abstract

Activated and annulated: A rhodium-catalyzed one-pot synthesis of highly substituted polyheteroaromatic compounds from N-hydroxybenzamidines and alkynes is described. This reaction likely proceeds through multiple CH bond activation and annulation.

Abstract

A new method for the synthesis of highly substituted naphthyridine-based polyheteroaromatic compounds in high yields proceeds through rhodium(III)-catalyzed multiple CH bond cleavage and CC and CN bond formation in a one-pot process. Such highly substituted polyheteroaromatic compounds have attracted much attention because of their unique π-conjugation, which make them suitable materials for organic semiconductors and luminescent materials. Furthermore, a possible mechanism, which involves multiple chelation-assisted ortho CH activation, alkyne insertion, and reductive elimination, is proposed for this transformation.

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