Photoinduced thiotelluration of isocyanides by using a (PhS)2-(PhTe)2 mixed system, and its application to bisthiolation via radical cyclization |
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Authors: | Takenori Mitamura |
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Institution: | Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan |
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Abstract: | Upon visible light irradiation, highly selective thiotelluration of isocyanides bearing an electron-withdrawing group like nitro or trifluoromethyl group takes place smoothly by the use of a disulfide-ditelluride mixed system. The application of this photoinduced reaction to radical cyclization of o-vinyl and o-allyl substituted phenylisocyanides successfully leads to the formation of bisthiolated indole and quinoline derivatives, respectively, in moderate yields. |
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