Lei Zhou, Yi Shi, Q. Xiao
Jan 26, 2011
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Influential Citations
138
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Quality indicators
Journal
Organic letters
Abstract
A new method for the synthesis of benzofurans or indoles via ligand-free CuBr-catalyzed coupling/cyclization of terminal alkynes with N-tosylhydrazones derived from o-hydroxy- or o-aminobenzaldehydes has been developed. A wide range of functional groups were found that are able to tolerate the reaction conditions.