- Transition metal-free, chemoselective arylation of thioamides yielding aryl thioimidates or N-aryl thioamides
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Reactions of secondary thioamides with diaryliodonium salts under basic, transition metal-free conditions resulted in chemoselective S-arylation to provide aryl thioimidates in good to excellent yields. Equimolar amounts of thioamide, base and diaryliodonium salt were sufficient to obtain a diverse selection of products within short reaction times. Reactions with thiolactams delivered N-arylated thioamides in good yield at room temperature.
- Villo, Piret,Kervefors, Gabriella,Olofsson, Berit
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- 3, 4-benzocoumarin derivative as well as preparation method and application thereof
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The general formula of the 3, 4-benzocoumarin derivative is shown as a formula I, and definitions of substituent groups are shown in the specification in detail. The 3, 4-benzocoumarin derivative witha novel structure provided by the invention is simple in preparation method, nontoxic and harmless, has blue fluorescence, and can be used as a potential organic functional material. The structure ofthe compound has modifiability, and has high optical stability and thermal stability.
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Paragraph 0073-0076
(2020/08/02)
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