Recyclable Heterogeneous Supported Copper-Catalyzed Coupling of Thiols with Aryl Halides: Base-Controlled Differential Arylthiolation of Bromoiodobenzenes
作者:Sukalyan Bhadra、Bojja Sreedhar、Brindaban C. Ranu
DOI:10.1002/adsc.200900358
日期:2009.10
Alumina-supported copper sulfate efficiently catalyzes the S-arylation of aromatic, heteroaromatic and aliphatic thiols with aryl as well as heteroaryl halides underaerobic, ligand-freeconditions. This protocol provides an easy access to a variety of thioethers as well as unsymmetrical bis-thioethers by base-controlled differential coupling of thiols with iodo- and bromo-substituents in an aromatic
Inexpensive copper catalysts enabled direct C–H chalcogenations at ambient temperature by means of photo-induced catalysis. The expedient copper catalysis set the stage for C–S and C–Se bond formation from readily accessible non-volatile elemental chalcogens. The photo-assisted copper catalysis manifold proved suitable for a wide range of substrates with good functional group tolerance and exhibited
Synthesis of Aryl Sulfides by Metal‐Free Arylation of Thiols with Diaryliodonium Salts under Basic Conditions**
作者:Sudeep Sarkar、Natalia Wojciechowska、Adam A. Rajkiewicz、Marcin Kalek
DOI:10.1002/ejoc.202101408
日期:2022.1.17
Aryl sulfides are synthesized by metal-free arylation of thiols with diaryliodonium salts under basic conditions. The protocol features easy performance, mildconditions, and short reaction time. It provides access to an array of products, including such that contain complex moieties of biological and therapeutic relevance (e. g., heterocycles, a carbohydrate). DFT calculations demonstrate that the
芳基硫化物是在碱性条件下通过硫醇与二芳基碘鎓盐的无金属芳基化合成的。该方案具有性能简单、条件温和、反应时间短等特点。它提供了对一系列产品的访问,包括包含具有生物学和治疗相关性的复杂部分的产品(例如,杂环、碳水化合物)。DFT 计算表明反应通过 Ar 2 I(SR) 中间体的形成进行,然后 C-S 形成还原消除。
The Direct Thiolation of Benzothiazole Catalyzed by Copper Complex in Superbase System
作者:Yu Yuan、Xiaowei Wang、Yanjun Li
DOI:10.1055/s-0032-1316891
日期:——
The copper-catalyzed direct thiolation of benzothiazole with iodobenzene and sulfur in superbase system under oxygen atmosphere is reported. The corresponding 2-thio-substituted benzothiazoles were formed in satisfactory yields.