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http://dx.doi.org/10.5012/bkcs.2013.34.9.2645

Synthesis of 2-Substituted Benzofurans from o-Iodophenols and Terminal Alkynes with a Recyclable Palladium Catalyst Supported on Nano-sized Carbon Balls under Copper- and Ligand-Free Conditions  

Yum, Eul Kgun (Department of Chemistry, Chungnam National University)
Yang, Ok-Kyung (Department of Chemistry, Chungnam National University)
Kim, Ji-Eun (Department of Chemistry, Chungnam National University)
Park, Hee Jung (Korea Basic Science Institute)
Publication Information
Bulletin of the Korean Chemical Society / v.34, no.9, 2013 , pp. 2645-2649 More about this Journal
Abstract
We have developed a one-step synthesis of benzofurans from o-iodophenol and various terminal alkynes, by using Pd catalyst supported on nano-sized carbon balls (NCB) under copper- and ligand free conditions. This recyclable catalyst could be reused more than 5 times in the same heteroannulation reaction. The results have demonstrated that diverse 2-substituted benzofurans with tolerant functional groups can be prepared simply and conveniently under these conditions.
Keywords
Benzofuran; Nano-sized carbon balls; Terminal alkynes; Recyclable; Palladium catalyst;
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