Nickel or iron salts catalyzing the selective synthesis of 3,3‐indolyl disulfide (diselenide) and 3,3‐indolyl thioether (selenide) directly from indole through C−H activation are reported. The effect of iodine element was beneficial in the novel metal‐catalyzed circulation system. A wide variety of functional groups could be tolerated under the reaction conditions.
Controllable Synthesis of Mono‐ and Bis‐sulfenylindoles from Indoles and Various Sulfenylation Agents Using KI/SeO
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System
作者:Thewika Benchawan、Rungnapha Saeeng
DOI:10.1002/ejoc.202200752
日期:2022.10.13
An efficient method for selective and controllable sulfenylation of indoles to synthesize mono- and bis-sulfenylindoles was reported by using a novel aerobic catalytic oxidation system KI/SeO2 for sulfenylation of indoles with disulfide/thiols. The method is scalable, not sensitive to moisture, and can proceed without metalcatalyst.