Synlett 2009(7): 1172-1174  
DOI: 10.1055/s-0028-1088149
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© Georg Thieme Verlag Stuttgart ˙ New York

A General and Efficient Synthesis of 2-Substituted Oxazolopyridines

Dan Xua, Xianfang Xub, Zongliang Liua, Li-Ping Sun*a, Qidong Youa
a Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. of China
Fax: +86(25)83271351; e-Mail: chslp@cpu.edu.cn;
b School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. of China
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Publication History

Received 21 November 2008
Publication Date:
20 March 2009 (online)

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Abstract

Starting from commercially available halonitropyridines and haloaminopyridines, 2-substituted-oxazolo[5,4-b]pyridines, and 2-aryl-oxazolo[4,5-b]pyridines were synthesized in good yields by using a Cu(I)-mediated cyclization of halopyridylamides as a key step.

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