期刊
TETRAHEDRON LETTERS
卷 53, 期 48, 页码 6495-6499出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.09.062
关键词
Selenium; Tellurium; Triazoles; Nickel; Negishi
资金
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo [FAPESP07/59404-2, 10/15677-8]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [300.613/2007-5, 152208/2010-0]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [10/15677-8] Funding Source: FAPESP
A general method for the synthesis of triazoles containing selenium and tellurium was accomplished via a CuCAAC reaction between organic azides and a terminal triple bond, generated by in situ deprotection of the silyl group. The reaction tolerates alkyl and arylazides, with alkyl and aryl substituents directly bonded to the chalcogen atom. The products were readily functionalized by a nickel-catalyzed Negishi cross-coupling reaction, furnishing the aryl-heteroaryl products at the 4-position in good yields. (C) 2012 Elsevier Ltd. All rights reserved.
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