Synthesis of 3-aryl-1H-indazoles via iridium-catalysed C–H borylation and Suzuki–Miyaura coupling
作者:Ben A. Egan、Paul M. Burton
DOI:10.1039/c4ra04235b
日期:——
The regioselective iridium-catalysed C3-borylation of 1H-indazoles has been achieved. Subsequent SuzukiâMiyaura coupling of the boronate esters with aryl chlorides, bromides and iodides affords 3-aryl-1H-indazoles in good yields.
Provided is a compound which is useful as a therapeutic agent for chronic renal insufficiency and a therapeutic agent for diabetic nephropathy.
The present inventors have made extensive studies on an ornithine derivative having an antagonistic action against an EP4 receptor, and as a result, they have found that by introducing cycloalkanediyl at a C terminal of the ornithine part of the compound of the present invention, the physicochemical properties such as solubility, and the like can be improved, thereby giving further preferred properties as a pharmaceutical. Therefore, they have completed the present invention.
The compound of the present invention exhibits a good antagonistic action against an EP4 receptor, and thus, it is useful as a therapeutic agent for chronic renal insufficiency and diabetic nephropathy.
Pairing Iron and Nickel Catalysis for Electrochemical Esterification of Aryl Halides with Carbazates
作者:Peng Xue、Liubo Li、Niankai Fu
DOI:10.1021/acs.orglett.2c03034
日期:2022.10.21
for esterification of aryl halides by pairing iron and nickel electrocatalysis. The reaction involves anodically iron-catalyzed oxidation of carbazates to produce alkoxycarbonyl radicals. The carbon-centered radicals then enter nickel catalysis that is powered by cathodic reduction to deliver the radical coupling products. Mechanistic data are consistent with arylnickel(II) species as the key intermediates
我们报告了一种通过配对铁和镍电催化来酯化芳基卤化物的电催化方法。该反应涉及阳极铁催化的氨基甲酸酯氧化以产生烷氧羰基自由基。然后,以碳为中心的自由基进入由阴极还原驱动的镍催化,以提供自由基偶联产物。机械数据与芳基镍 (II) 物种一致,它们是能够形成所需碳-碳键的关键中间体。
[EN] BENZENE RING-CONTAINING COMPOUND, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF<br/>[FR] COMPOSÉ CONTENANT UN CYCLE BENZÉNIQUE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 含苯环的化合物、其制备方法及应用
申请人:GUANGZHOU WELLHEALTH BIO PHARMACEUTICAL CO LTD