Synthesis of Benzofuran and Indole Derivatives Catalyzed by Palladium on Carbon
作者:Anatoli Savvidou、Dimitrios IoannisTzaras、Giorgos S. Koutoulogenis、Alexis Theodorou、Christoforos G. Kokotos
DOI:10.1002/ejoc.201900577
日期:2019.6.30
A cheap, easy‐to‐execute and sustainable synthetic methodology for the synthesis of indoles and benzofurans was developed utilizing Pd/C as the promoter. A great variety of substituted ortho‐allyl anilines or phenols were utilized, leading to products in moderate yields. Recycling of the catalyst up to five times has been achieved.
Copper-catalyzed radical cascade cyclization for the synthesis of phosphorated indolines
作者:Hong-Yu Zhang、Liu-Liang Mao、Bin Yang、Shang-Dong Yang
DOI:10.1039/c4cc10267c
日期:——
A novel and convenient approach to the synthesis of various phosphorated indolinesviaa copper-catalyzed radical cascade cyclization reaction has been developed.
Efficient Copper-Catalyzed Direct Intramolecular Aminotrifluoromethylation of Unactivated Alkenes with Diverse Nitrogen-Based Nucleophiles
作者:Jin-Shun Lin、Ya-Ping Xiong、Can-Liang Ma、Li-Jiao Zhao、Bin Tan、Xin-Yuan Liu
DOI:10.1002/chem.201303387
日期:2014.1.27
A mild, convenient, and step‐economical intramolecular aminotrifluoromethylation of unactivated alkenes with a variety of electronically distinct, nitrogen‐based nucleophiles in the presence of a simple copper salt catalyst, in the absence of extra ligands, is described. Many different nitrogen‐based nucleophiles (e.g., basic primaryaliphatic and aromaticamines, sulfonamides, carbamates, and ureas)
Enantioselective Synthesis of 2-Bromomethyl Indolines via BINAP(S)-Catalyzed Bromoaminocyclization of Allyl Aniline
作者:Sheng-Nan Yu、Yin-Long Li、Jun Deng
DOI:10.1002/adsc.201700106
日期:2017.7.17
An enantioselective bromoamination of allyl aniline with N‐bromosuccinimide (NBS) catalyzed by BINAP(S) (BINAP monosulfide) is described. This protocol could provide a range of chiral 2‐bromomethyl indolines in good to excellent yields with up to 87% ee. Furthermore, the resulting chiral 2‐bromomethyl indolines could be easily converted into synthetically useful chiral building blocks.
Green Organocatalytic Synthesis of Indolines and Pyrrolidines from Alkenes
作者:Alexis Theodorou、Christoforos G. Kokotos
DOI:10.1002/adsc.201601262
日期:2017.5.2
efficient 2,2,2‐trifluoroacetophenone‐catalyzed oxidation of alkenes, which utilizes H2O2 as the green oxidant, a novel and sustainable synthesis of indolines and pyrrolidines was developed. This constitutes a cheap, general and environmentally‐friendly protocol for the synthesis of substituted nitrogen‐containing heterocycles. A variety of substitution patterns, both aromatic and aliphatic moieties, are well
利用绿色,高效的2,2,2-三氟苯乙酮催化的烯烃氧化,利用H 2 O 2作为绿色氧化剂,开发了新颖且可持续的二氢吲哚和吡咯烷的合成方法。这构成了用于合成取代的含氮杂环的廉价,通用且环境友好的方案。芳香族和脂肪族部分的各种取代方式都具有良好的耐受性,从而以良好至极佳的收率产生了所需的氮杂环。