The direct synthesis of 3-arylselanyl benzothiophenes was developed. The formation of arylselanyl radicals from diselenides in the presence of visible light enabled the direct synthesis of 3-arylselanyl benzothiophenes through intramolecular radical cyclization. The reaction does not require any catalysts or additives. This direct method provides a simple preparation route for benzothiophene derivatives, which are important scaffolds in organic synthesis.

中文翻译：

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可见光介导自由基环化合成 3-芳基硒基苯并噻吩

开发了3-芳基硒基苯并噻吩的直接合成方法。在可见光存在下，二硒化物形成芳基硒基自由基，使得能够通过分子内自由基环化直接合成3-芳基硒基苯并噻吩。该反应不需要任何催化剂或添加剂。这种直接方法为苯并噻吩衍生物提供了一条简单的制备路线，苯并噻吩衍生物是有机合成中的重要支架。