Fluorination of Boronic Acids Mediated by Silver(I) Triflate
摘要:
A regiospecific Ag-mediated fluorination reaction of aryl- and alkenylboronic acids and esters is reported. The fluorination reaction uses commercially available reagents, does not require the addition of exogenous ligands, and can be performed on a multigram scale. This report discloses the first practical reaction sequence from arylboronic acid to aryl fluorides.
Silver(i)-catalyzed carboxylation of arylboronic esters with CO2
作者:Xiao Zhang、Wen-Zhen Zhang、Ling-Long Shi、Chun-Xiao Guo、Ling-Ling Zhang、Xiao-Bing Lu
DOI:10.1039/c2cc32045b
日期:——
A variety of arylboronic esters were efficiently carboxylated with CO2 using a simple AgOAc/PPh3 catalyst, affording the corresponding carboxylic acids in good yield. This simple and efficient silver(I) catalytic system showed wide functional group compatibility.
Mechanism and Scope of Nickel-Catalyzed Decarbonylative Borylation of Carboxylic Acid Fluorides
作者:Christian A. Malapit、James R. Bour、Simon R. Laursen、Melanie S. Sanford
DOI:10.1021/jacs.9b08961
日期:2019.10.30
Article describes the development of a base-free, nickel-catalyzeddecarbonylative coupling of carboxylic acid fluorides with diboron reagents to selectively afford aryl boronate ester products. Detailed studies were conducted to assess the relative rates of direct transmetalation between aryl boronate esters and diboron reagents and a bisphosphine nickel(aryl)(fluoride) intermediate. These investigations
pH-Responsive N-heterocyclic carbene copper(i) complexes: syntheses and recoverable applications in the carboxylation of arylboronic esters and benzoxazole with carbon dioxide
作者:Wenlong Wang、Guodong Zhang、Rui Lang、Chungu Xia、Fuwei Li
DOI:10.1039/c3gc36830k
日期:——
developed as a green and novel strategy for homogeneous catalyst recycling, which has been successfully applied to the Cu-NHC-catalyzed carboxylation of organoboronic esters and benzoxazole with carbondioxide. Additionally, the present strategy could also be extended to the Ag-NHC-catalyzed carboxylation of terminal alkyne. The tertiary amine-functionalized catalysts could be used for at least four
Nickel-Catalyzed Decarbonylative Borylation of Amides: Evidence for Acyl C−N Bond Activation
作者:Jiefeng Hu、Yue Zhao、Jingjing Liu、Yemin Zhang、Zhuangzhi Shi
DOI:10.1002/anie.201603068
日期:2016.7.18
nickel/N‐heterocycliccarbenecatalytic system has been established for decarbonylative borylation of amides with B2nep2 by C−N bond activation. This transformation shows good functional‐group compatibility and can serve as a powerful synthetic tool for late‐stage borylation of amide groups in complex compounds. More importantly, as a key intermediate, the structure of an acyl nickel complex was first