Palladium-catalyzed regiodivergent hydroaminocarbonylation of alkenes to primary amides with ammonium chloride
作者:Bao Gao、Guoying Zhang、Xibing Zhou、Hanmin Huang
DOI:10.1039/c7sc04054g
日期:——
the synthesis of primary amides has long been an elusive aim. Here, we report an efficient catalytic system which enables inexpensive NH4Cl to be utilized as a practical alternative to gaseous ammonia for the palladium-catalyzed alkene-hydroaminocarbonylation reaction. Through appropriate choice of the palladium precursors and ligands, either branched or linear primary amides can be obtained in good
[EN] BENZO[H]QUINOLINE LIGANDS AND COMPLEXES THEREOF<br/>[FR] LIGANDS DE BENZO[H]QUINOLÉINE ET COMPLEXES DE CEUX-CI
申请人:JOHNSON MATTHEY PLC
公开号:WO2016193761A1
公开(公告)日:2016-12-08
The present invention provides substituted tridentate benzo[h]quinoline ligands and complexes thereof. The invention also provides the preparation of the ligands and the respective complexes, as well as to processes for using the complexes in catalytic reactions.
We achieved chemoselective synthesis of α-alkylated arylacetonitriles and acetamides by combining Ir complex-catalysed direct coupling of alcohols and nitriles by a simple adjustment of the base. Methanol and ethanol performed well as the alkylating reagents. This method of acetonitrile alkylation provided a novel approach for carbon chain extension.
我们通过简单的碱调节,结合 Ir 络合物催化的醇和腈的直接偶联,实现了 α-烷基化芳基乙腈和乙酰胺的化学选择性合成。甲醇和乙醇作为烷基化试剂表现良好。这种乙腈烷基化方法为碳链延长提供了一种新方法。
Visible-Light Decatungstate/Disulfide Dual Catalysis for the Hydro-Functionalization of Styrenes
作者:Alexis Prieto、Marc Taillefer
DOI:10.1021/acs.orglett.1c00189
日期:2021.2.19
We describe an efficient photoredox system, relying on decatungstate/disulfide catalysts, for the hydrofunctionalization of styrenes. In this methodology the use of disulfide as a cocatalyst was shown to be crucial for the reaction efficiency. This photoredox system was employed for the hydro-carbamoylation, -acylation, -alkylation, and -silylation of styrenes, giving access to a large variety of useful