Amination of Aromatic Halides and Exploration of the Reactivity Sequence of Aromatic Halides
作者:Chu Yang、Feng Zhang、Guo-Jun Deng、Hang Gong
DOI:10.1021/acs.joc.8b02588
日期:2019.1.4
A base-promoted amination of aromatic halides has been developed using a limited amount of dimethylformamide (DMF) or amine as an amino source. Various arylhalides, including F, Cl, Br, and I, have been successfully aminated in good to excellent yields. Although the amination of aromatic halides with amines or DMF is usually considered as an aromatic nucleophilic substitution (SNAr) process, and the
This invention relates to medicaments, particularly novel fused imidazolium derivatives useful for the treatment of cancers and novel synthetic intermediate compounds thereof.
The novel imidazolium derivatives fused with an aryl or heteroaryl ring, characterized in that the 1- and/or 3-position is substituted by an alkyl group etc. having a substituent selected from the group consisting of -ORa, -SRa and the like, have excellent anti-tumor activity and low toxicity and are useful as anticancer agents having wide margins of safety.
A simple synthesis of aminopyridines: use of amides as amine source
作者:Arumugam Kodimuthali、Anitha Mungara、Padala Lakshmi Prasunamba、Manojit Pal
DOI:10.1590/s0103-50532010000800005
日期:——
A transition metal/microwave irradiation (or base) free synthesis of aminopyridines has been accomplished via C-N bond forming reaction between chloropyridine and a variety of simple amides under refluxing conditions.
Microwave Irradiation–Assisted Amination of 2-Chloropyridine Derivatives with Amide Solvents
作者:Abdelouahid Samadi、Daniel Silva、Mourad Chioua、Maria do Carmo Carreiras、José Marco-Contelles
DOI:10.1080/00397911.2010.515360
日期:2011.10
A simple, quick, and high-yielding microwave-assisted synthesis of 2-(N,N-dimethyl)amine- and 2-aminopyridine derivatives is reported here for the first time in the reaction of 2-chloro substituted pyridines with amide solvents such as dimethylformamide or formamide, without transition-metal catalysts.
Microwave-induced by-products in the synthesis of 2-(4-methyl-2-phenylpiperazinyl)pyridine-3-carbonitrile
作者:Christelle Lamazzi、Armelle Dreau、Christel Bufferne、Christine Flouzat、Patrick Carlier、Rob ter Halle、Thierry Besson
DOI:10.1016/j.tetlet.2009.05.068
日期:2009.8
The Letter describes the investigation of an industrial reaction of N-methylphenylpiperazine and chloro nicotinonitrile, under microwave heating. Besides the formation of the expected 2-(4-methyl-2-phenylpiperazinyl)pyridine-3-carbonitrile (4), extension of the scale leads to unexpected by-products. A specific pathway due to the formation of a reactive 'ionic alkylating intermediate' formed in situ under microwave conditions is proposed to explain the results observed. (C) 2009 Elsevier Ltd. All rights reserved.