Coupling of thiols and aromatic halides promoted by diboron derived super electron donors
作者:Mario Franco、Emily L. Vargas、Mariola Tortosa、M. Belén Cid
DOI:10.1039/d1cc05294b
日期:——
We have proven that pyridine–boryl complexes can be used as superelectron donors to promote the coupling of thiols and aromatic halides through a SRN1 mechanism. The reaction is efficient for a broad substrate scope, tolerating heterocycles including pyridines, enolizable or reducible functional groups. The method has been applied to intermediates in drug synthesis as well as interesting functionalized
我们已经证明,吡啶-硼基复合物可用作超电子供体,通过 S RN 1 机制促进硫醇和芳族卤化物的偶联。该反应适用于广泛的底物范围,可耐受杂环,包括吡啶、可烯醇化或可还原的官能团。该方法已通过受控和连续的分子内电子转移过程应用于药物合成中的中间体以及有趣的功能化聚硫醚。
Copper- and Palladium-Containing Perovskites: Catalysts for the Ullmann and Sonogashira Reactions
The utility of perovskite-based materials in organic synthesis is explored through examination of a series of copper- and palladium-containing perovskites in Ullmann and Sonogashira type reactions. La0.9Ce0.1Co0.6Cu0.4O3 is identified as an effective catalyst for the synthesis of a range of biaryl ether and thioether functionalities, whilst a Cu- and Pd-containing perovskite is effective in the Sonogashira reaction. These results suggest that perovskites may be useful leads in the search for new catalysts and reagents for organic synthesis.