Quinoline Ligands Improve the Classic Direct C−H Functionalisation/Intramolecular Cyclisation of Diaryl Ethers to Dibenzofurans
作者:Katrina Mackey、David J. Jones、Leticia M. Pardo、Gerard P. McGlacken
DOI:10.1002/ejoc.202001416
日期:2021.1.22
Intramolecular arylation through direct C−H functionalisation is a convenient method for the formation of dibenzofurans. In the Pd‐mediated process, the use of quinoline ligands alleviates a number of the existing issues with the use of phosphineligands.
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
Copper-Catalyzed <i>N</i>-Arylation of 2-Pyridones Employing Diaryliodonium Salts at Room Temperature
作者:Seo-Hee Jung、Dan-Bi Sung、Cho-Hee Park、Won-Suk Kim
DOI:10.1021/acs.joc.6b01415
日期:2016.9.2
A new and mild synthetic approach for the N-arylation of 2-pyridones with diaryliodoniumsalts has been developed. Most reactions proceed readily at room temperature in the presence of 10 mol % of copper chloride. As a result, a wide range of N-arylpyridine-2-ones were synthesized in yields of 23% to 99%. With this method, an antifibrotic drug, Pirfenidone, was successfully synthesized in 99% yield
The metal-free synthesis of phenols from diaryliodonium salts with water was developed by using N-benzylpyridin-2-one as an organocatalyst. In this process, sterically congested, functionalized, and heterocycle-containing iodonium salts were smoothly converted to the desired products, and the clofibrate and mecloqualone derivatives were also synthesized in high yields. In addition, the gram-scale experiment
Metal-Free <i>S</i>-Arylation of Phosphorothioate Diesters and Related Compounds with Diaryliodonium Salts
作者:Sudeep Sarkar、Marcin Kalek
DOI:10.1021/acs.orglett.2c04310
日期:2023.2.3
method allows for the preparation under simple conditions of a broad range of S-aryl phosphorothioates, including complex molecules (e.g., dinucleotide or TADDOL derivatives), as well as other related organophosphorus compounds arylated at a chalcogen. The reaction proceeds with a full retention of the stereogenic center at the phosphorusatom, opening convenient access to P-chiral products. The mechanism