One-Pot Metal-Free Cascade Synthesis of 2-(Perfluoroalkyl)pyrroles
作者:Xuechun Sun、Jing Han、Jie Chen、Hongmei Deng、Min Shao、Hui Zhang、Weiguo Cao
DOI:10.1002/ejoc.201501010
日期:2015.11
An efficient synthesis of 2-(perfluoroalkyl)pyrroles that employs a sequential one-pot three-component reaction between substituted ω-bromoacetophenones, anilines, and methyl perfluoroalk-2-ynoates has been developed. This transition-metal-free cascade process provides a practical way to construct perfluoroalkylated pyrroles in moderate to good yields.
A general and mild method for the construction of a carbon–nitrogen bond via copper-catalyzedoxidativecross-coupling of amines with α-aminocarbonyl compounds was achieved. Amines, either aliphatic primary amines, aromatic primary amines or secondary amines can be used as the starting materials. When R2 was different from R3, two isomers would be observed. Therefore, this reaction system has a broad
Copper-Catalyzed CH Oxidation/Cross-Coupling of α-Amino Carbonyl Compounds
作者:Ji-Cheng Wu、Ren-Jie Song、Zhi-Qiang Wang、Xiao-Cheng Huang、Ye-Xiang Xie、Jin-Heng Li
DOI:10.1002/anie.201109027
日期:2012.4.2
indoles selectively furnishes 1 and 2 with the aid of tert‐butyl hydroperoxide (TBHP). The method represents the first example of a copper‐catalyzedα arylation of α‐amino carbonyl substrates leading to α‐aryl α‐imino and α‐aryl α‐oxo carbonyl compounds using a CH oxidation strategy.
Copper-Catalyzed Oxidative α-Alkylation of α-Amino Carbonyl Compounds with Ethers<i>via</i>Dual C(<i>sp</i><sup>3</sup>)-H Oxidative Cross- Coupling
作者:Wen-Ting Wei、Ren-Jie Song、Jin-Heng Li
DOI:10.1002/adsc.201301091
日期:2014.5.26
A novel copper‐catalyzed oxidative alkylation of α‐amino carbonyl compounds with ethers has been established for the selective synthesis of α‐etherized α‐amino carbonyl compounds. This oxidative alkylation is achieved by dual C(sp3)H bond oxidative cross‐coupling, and its scope is expanded to α‐amino ketones, α‐amino esters and α‐amino amides.
ABSTRACT A novel iron-catalyzed oxidative coupling of indoles with α-amino carbonyl compounds has been developed. The transformation provides an attractive approach to the synthesis of 3-acylindoles, with the advantages of easily available starting materials and high functional group tolerance. Furthermore, control experiments imply that a radical process maybe involved in this reaction. GRAPHICAL