Substrate or Solvent-Controlled Pd<sup>II</sup>
-Catalyzed Regioselective Arylation of Quinolin-4(1<i>H</i>
)-ones Using Diaryliodonium Salts: Facile Access to Benzoxocine and Aaptamine Analogues
作者:Manish K. Mehra、Shivani Sharma、Krishnan Rangan、Dalip Kumar
DOI:10.1002/ejoc.202000013
日期:2020.5.3
Substrate or solvent controlled regioselective C3, C5, and C8 arylation of quinolin‐4(1H)‐ones with diaryliodoniumsalts have been successfully achieved in high yields (up to 96 %). These protocols are applicable to a wide range of quinolone related heterocycles and provide potential access to naturally occurring benzoxocine and aaptamineanalogues
Palladium-catalyzed direct β-arylation of ketones with diaryliodonium salts: a stoichiometric heavy metal-free and user-friendly approach
作者:Zhongxing Huang、Quynh P. Sam、Guangbin Dong
DOI:10.1039/c5sc01636c
日期:——
A user-friendly protocol for the Pd-catalyzed direct [small beta]-arylation of ketones is described, which avoids the use of stoichiometric heavy metals.
A transition metal‐free approach for the N‐arylation of amino acid derivatives has been developed. Key to this method is the use of unsymmetricdiaryliodoniumsalts with anisyl ligands, which proved important to obtain high chemoselectivity and yields. The scope includes the transfer of both electron deficient, electron rich and sterically hindered aryl groups with a variety of different functional
Visible-Light-Mediated Synthesis of Diaryl Ethers from Arylboronic Acids and Diaryliodonium Salts
作者:Li Liu、Jiaqi Tang、Jian Qiang、Jian Li、Mingyang He
DOI:10.3184/174751916x14597761998193
日期:2016.5
With visible-light irradiation, a simple and metal-free photocatalytic system for the synthesis of diaryl ethers from arylboronic acids and diaryliodonium salts has been developed. The reaction proceeded in high yield for a range of different substrates in the presence of eosin Y under mild reaction conditions.
在可见光照射下,开发了一种简单且无金属的光催化体系,用于从芳基硼酸和二芳基碘盐合成二芳基醚。在温和的反应条件下,在曙红 Y 的存在下,对于一系列不同的底物,反应以高产率进行。
Copper-catalyzed aerobic carboxygenation and N-arylation of [1,2,3]triazolo[1,5-a]pyridines towards pyridinium triazolinone ylides
Copper-catalyzed aerobic oxyarylation of [1,2,3]triazolo[1,5-a]pyridines is developed. Notably molecular oxygen was utilized as one of the reagents and the transformation resulted in the formation of novel pyridinium triazolinone ylides. A basic mechanism for the one-pot process is proposed and further functionalization of the ylidic products were also presented.