Nickel-Catalyzed Coupling of Arylzinc Halides with Thioesters
作者:Paul H. Gehrtz、Prasad Kathe、Ivana Fleischer
DOI:10.1002/chem.201801887
日期:2018.6.21
The Pd‐catalyzed Fukuyama reaction of thioesters with organozinc reagents is a mild, functional‐group‐tolerant method for acylation chemistry. Its Ni‐catalyzed variant might be a sustainable alternative to expensive catalytic Pd sources. We investigated the reaction of S‐ethyl thioesters with aryl zinc halides with hetero‐ and homotopic Ni precatalysts and several ligands. The results show that both
Nickel Catalyzed Cross-Coupling of Aryl and Alkenyl Triflates with Alkyl Thiols
作者:Regina M. Oechsner、Ivo H. Lindenmaier、Ivana Fleischer
DOI:10.1021/acs.orglett.3c00218
日期:2023.3.17
We report a nickel catalyzed C–S cross-coupling of aryl and alkenyl triflates with alkyl thiols. A variety of the corresponding thioethers were synthesized using an air-stable nickel precatalyst under mild reaction conditions with short reaction times. A broad substrate scope, including pharmaceutically relevant compounds, could be demonstrated.
Alkenyl Thioetherification Enabled by Nickel Catalysis
作者:Bing Xu、Huan Xiang、Yuqiong Tan、Ze Li、Shijun Li、Xiang-Yang Ye、Yang Ye
DOI:10.1021/acs.joc.3c00049
日期:——
This paper describes an efficient strategy to promote alkenyl thioetherifications via the Ni-catalyzed cross-coupling of inactivated or β-aryl-substituted (E)-alkenyl halides with thio-alcohols/phenols. The present strategy with easy-to-operate reaction conditions represents one of the most effective alkenyl C(sp2)–S bond-forming methods via readily accessible nickel catalysis. Notably, the mildly
本文描述了一种有效的策略,通过镍催化的失活或 β-芳基取代的 ( E )-烯基卤化物与硫醇/酚的交叉偶联来促进烯基硫醚化。本策略具有易于操作的反应条件,代表了通过易于获得的镍催化形成最有效的烯基 C(sp 2 )–S 键的方法之一。值得注意的是,所采用的温和碱性条件有助于获得广泛的范围,包括受保护的氨基酸、糖类和杂环化合物。此外,这项工作通过在几种结构复杂的天然产物和药物的后期修饰中的应用展现了其极具吸引力的实用性。
Nickel-Catalyzed Selective C–H Cyanation via Aromatic Thianthrenium Salts
Here, we report the first case of nickel-catalyzed C–H cyanation via arylthianthrenium salts. The reaction features the use of air-stable and inexpensive NiCl2·6H2O as a catalyst for the highly selective construction of cyanation products by aromatic pre-thianthrenation. The mechanism study shows that the formation of aryl radicals is involved. Also, this protocol can be applied to the late-stage functionalization