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Α-Thio Carbocations (Thionium Ions) as Intermediates in BrØnsted Acid-Catalyzed Reactions of Enone-Derived 1,3-Dithianes and 1,3-Dithiolanes

Topics in Catalysis (2018) 61(7-8) 623-629
DOI: 10.1007/s11244-018-0905-6
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Abstract

Abstract: Evidence was collected for the intermediate formation of thionium ions in Brønsted acid-catalyzed [2 + 2] photocycloaddition and electrophilic addition reactions to enone dithianes and dithiolanes. Low-temperature NMR studies helped to elucidate the structure and configuration of the thionium ions and thus support previous and current results obtained by UV/Vis spectroscopy. Graphical Abstract: [Figure not available: see fulltext.].

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Brenninger, C., & Bach, T. (2018). Α-Thio Carbocations (Thionium Ions) as Intermediates in BrØnsted Acid-Catalyzed Reactions of Enone-Derived 1,3-Dithianes and 1,3-Dithiolanes. Topics in Catalysis, 61(7–8), 623–629. https://doi.org/10.1007/s11244-018-0905-6

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