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《Angewandte Chemie (International ed. in English)》2017,56(1):409-412
Heteroaromatic sulfoxides are a frequent structural motif in natural products, drugs, catalysts, and materials. We report a metal‐free visible‐light‐accelerated synthesis of heteroaromatic sulfoxides from sulfinamides and peroxodisulfate. The reaction proceeds at room temperature with blue‐light irradiation and allows the C−H sulfinylation of electron‐rich heteroarenes, such as pyrroles and indoles. An electrophilic aromatic substitution mechanism is proposed based on the substrate scope, substitution selectivity, and competition experiments with different nucleophiles. 相似文献
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Kaveh Parvanak Boroujeni 《Phosphorus, sulfur, and silicon and the related elements》2013,188(10):2085-2091
A simple, chemoselective, and efficient method has been developed for direct conversion of arenes to symmetrical diaryl sulfoxides using thionyl chloride in the presence of a catalytic amount of cross-linked polystyrene-supported aluminium chloride (Ps-AlCl3) and silica gel–supported aluminium chloride (SiO2-AlCl3). These solid acid catalysts are stable and can be easily recovered and reused without appreciable change in their efficiency. 相似文献
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Steve Price Richard Bull Sophie Gardan David Neighbour Iwan J.P. de Esch 《Tetrahedron letters》2004,45(29):5581-5583
A library of 2-guanidinomethyl-4(5)-sulfamoylimidazoles was synthesised in a convergent manner by introducing a sulfonyl chloride group via a trianion electrophilic sulfinylation of suitably protected 2-guanidinomethyl imidazoles. 相似文献
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