HALOGENATION OF AROMATIC METHYL KETONES USING OXONE® AND SODIUM HALIDE
作者:Eun-Hoo Kim、Bon-Suk Koo、Choong-Eui Song、Kee-Jung Lee
DOI:10.1081/scc-100107011
日期:2001.1
Aromatic methyl ketones undergo α-halogenation on treatment with sodium halide in the presence of oxone® in aqueous methanol. However, electron-rich hetero aromatic methyl ketones afford ring bromination products preferentially.
Synthesis and evaluation of cyclic nitrone derivatives as potential anti-cancer agents
作者:Wei Zhou、Dongyan Ju、Yuhui Ao、Yu Liu、Jinbo Zhao
DOI:10.1007/s00044-021-02729-2
日期:2021.6
However, successful clinical cases of nitrone therapeutics are still lacking. Herein we report the synthesis and antiproliferative activity of a series of structurally diverse nitrone derivatives against a panel of 5 cancer cell lines, based on which indole- and pyrrole-fused were further evaluated by analogue preparation and in-vitro screening. Analogues with moderate to good potency were identified
A quick, mild and efficient bromination using a CFBSA/KBr system
作者:Pan-Pan Jiang、Xian-Jin Yang
DOI:10.1039/c6ra20217a
日期:——
chemistry and brominated compounds as building blocks are of paramount importance in organic synthesis. In our study, we have developed an efficientmethod of bromination by using a CFBSA/KBr system at room temperature in a short reaction time. Notably, this approach has been proven to be applicable to a range of substrates including 1,3-diketones and β-keto esters, phenols, aromatic amines and heteroarenes
Oxidative Ring-Opening of 1<i>H</i>
-Pyrazol-5-amines and Its Application in Constructing Pyrazolo-Pyrrolo-Pyrazine Scaffolds by Domino Cyclization
作者:Lei Pan、Feng Jin、Rui Fu、Ke Gao、Shaofang Zhou、Xiaoguang Bao
DOI:10.1002/ejoc.202000265
日期:2020.5.22
A concise approach to synthesize 3H‐pyrazolo[3,4‐e]pyrrolo[1,2‐a]pyrazine derivatives via oxidative ring‐opening of 1H‐pyrazol‐5‐amines under mild and transition‐metal‐free conditions is described herein.
A versatile, modular synthesis of monofunctionalized BODIPY dyes
作者:Volker Leen、Els Braeken、Kristof Luckermans、Carine Jackers、Mark Van der Auweraer、Noël Boens、Wim Dehaen
DOI:10.1039/b906164a
日期:——
A careful choice of the pyrrole building blocks allows the synthesis of a wide range of monohalogenated BODIPY dyes with excellent reactivity in palladium catalyzed coupling reactions.