Synthesis 2009(16): 2697-2708  
DOI: 10.1055/s-0029-1216873
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Facile and Efficient Synthesis of a New Class of Indole-Substituted Pyridine Derivatives via One-Pot Multicomponent Reactions

Kai Zhao, Xiao-Ping Xu, Song-Lei Zhu, Da-Qing Shi, Yong Zhang, Shun-Jun Ji*
Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. of China
Fax: +86(512)65880307; e-Mail: chemjsj@suda.edu.cn;
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Publikationsverlauf

Received 18 March 2009
Publikationsdatum:
26. Juni 2009 (online)

Abstract

A new series of indole-containing pyridine derivatives, 4-aryl-6-(1H-indol-3-yl)-2,2′-bipyridine-5-carbonitriles, were synthesized via one-pot multicomponent reactions of 3-(cyano­acetyl)indoles, aldehydes, heterocyclic ketones, and ammonium acetate. Particularly valuable features of this method include high yields of products, broad substrate scope, and straightforward procedures.

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Structural parameters for 4f: data collection: Rigaku Mercury CCD area detector; C25H16N4, yellow solid, crystal dimension 0.55 × 0.35 × 0.30 mm, triclinic, space group P 1, a = 9.7744 (16) Å, b = 9.7927 (11) Å, c = 11.233 (2) Å, α = 73.121 (13)˚, β = 86.008 (16)˚, γ = 63.853 (10)˚, V = 921.5 (2) ų, Mr = 372.42, Z = 2, Dc = 1.171 Mg/m³, λ (Mo-Kα) = 0.71070 Å, µ = 0.082 mm- ¹, F(000) = 388, 3.10˚ < θ < 25.34˚, R I >2 σ ( I ) = 0.0544, wR I >2 σ ( I ) = 0.1159, largest diff. peak and hole: 0.158 and -0.205 e Å. CCDC reference number 684602.

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Structural parameters for 5b: data collection: Rigaku Mercury CCD area detector; C25H17BrN4, colorless solid, crystal dimension 0.27 × 0.20 × 0.16 mm, triclinic, space group P 1, a = 11.286 (2) Å, b = 13.516 (2) Å, c = 14.423 (3) Å, α = 90.685 (2)˚, β = 108.077 (3)˚, γ = 102.674 (3)˚, V = 2032.9 (6) ų, Mr = 452.33, Z = 4, Dc = 1.478 Mg/m³, λ (Mo-Kα) = 0.71075 Å, µ = 2.042 mm- ¹, F(000) = 916, 3.10˚ < θ < 25.50˚, R I >2 σ ( I ) = 0.0586, wR I >2 σ ( I ) = 0.1540, largest diff. peak and hole: 2.424 and -0.662 e Å. CCDC reference number 713488.