Metal-free synthesis of 3-chalcogen benzo[b]furans via an iodine-mediated electrophilic cyclisation of 2-alkynylanisoles
2011
Xu, Mei | Zhang, Xiao-Hong | Zhong, Ping
An efficient and metal-free method was developed to synthesize 3-chalcogen benzo[b]furans via the iodine-mediated electrophilic cyclisation of 2-alkynylanisoles with disulfides or diselenides. In the presence of I₂, various 3-sulfenylbenzofurans or 3-selenenylbenzofurans were obtained in moderate to high yields.
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