Arylketones as Aryl Donors in Palladium-Catalyzed Suzuki–Miyaura Couplings
作者:Zhen-Yu Wang、Biao Ma、Hui Xu、Xing Wang、Xu Zhang、Hui-Xiong Dai
DOI:10.1021/acs.orglett.1c03048
日期:2021.11.5
Herein, we report the arylation, alkylation, and alkenylation of aryl ketones via a palladium-catalyzed Suzuki–Miyaura cross-coupling reaction. The use of the pyridine-oxazoline ligand is the key to the cleavage of the unstrained C–C bond. The late-stage arylation of aryl ketones derived from drugs and natural products demonstrated the synthetic utility of this protocol.
Synthesis of trifluoromethylthiolated pyridinones through the copper-mediated trifluoromethylthiolation of iodopyridinones
作者:Beibei Luo、Yunxiao Zhang、Yi You、Zhiqiang Weng
DOI:10.1039/c6ob01348a
日期:——
A simple method for the synthesis of trifluoromethylthiolated pyridinones through the copper-mediated trifluoromethylthiolation of iodopyridinones was developed.
通过铜介导的碘吡啶酮三氟甲硫基化合成三氟甲硫基吡啶酮的简单方法已经开发出来。
Cascade Access to Carboline Carboxylates from Indolyl Ketoximes and Acrylates via Palladium-Catalyzed C–H Bond Alkenylation/Annulation
作者:Cheng-Cai Xia、Ya-Fei Ji、Xiao-Pan Fu、Lu Chen、Gao-Rong Wu、Hong-Wei Liu
DOI:10.1055/s-0040-1707192
日期:2021.1
An efficient palladium-catalyzedC–H bond alkenylation/annulation strategy to access carboline carboxylates from indolyl ketoximes and acrylates through C–C/C–N bond formation is reported. Indolyl ketoximes not only direct ortho-olefination with acrylates, but also undergo an intramolecular N–O bond cleavage/traceless annulation to construct carboline carboxylates straightforwardly in this concise
Chiral diene-promoted room temperature conjugate arylation: highly enantioselective synthesis of substituted chiral phenylalanine derivatives and α,α-di(arylmethyl)acetates
作者:Jian-Ping Chen、Ming-Hua Xu
DOI:10.1039/d0ob00616e
日期:——
highly enantiocontrolled room temperature rhodium-catalyzed conjugate arylation process was developed. The reaction proceeds through 1,4-addition of α-substitutedacrylates followed by enantioselectiveprotonation using a C1-symmetric chiral bicyclo[2,2,2] diene as the ligand and water as the proton source. This exceptionally simple protocol provides a reliable and practical access to structurally important
Electrosynthesis of benzylboronic acids and esters
作者:C. Pintaric、C. Laza、S. Olivero、E. Duñach
DOI:10.1016/j.tetlet.2004.09.005
日期:2004.10
A novel preparation of benzylboronic acids and esters is described by using an electrochemical reductive coupling reaction between benzylic halides and borating agents (trialkylborates or pinacolborane). The reaction is carried out at room temperature in DMF or THF with the use of a sacrificial magnesium anode in a single-compartment cell. (C) 2004 Elsevier Ltd. All rights reserved.