21718-94-5Relevant academic research and scientific papers
Metal-, Photocatalyst-, and Light-Free Minisci C-H Acetylation of N-Heteroarenes with Vinyl Ethers
Dong, Jianyang,Liu, Jianhua,Song, Hongjian,Liu, Yuxiu,Wang, Qingmin
, p. 4374 - 4378 (2021)
Herein, we report a mild, operationally simple method for Minisci C-H acetylation of N-heteroarenes using vinyl ethers as robust, inexpensive acetyl sources. The reactions do not require a conventional photocatalysis, electrocatalysis, metal catalysis, light activation, or high temperature. This method is thus significantly more sustainable than previously reported methods in terms of cost, reagent toxicity, and waste generation. This protocol can be expected to obtain medically relevant molecules from abundant feedstock materials.
Metal-free C-H methylation and acetylation of heteroarenes with PEG-400
Kudale, Vishal Suresh,Wang, Jeh-Jeng
supporting information, p. 3506 - 3511 (2020/06/25)
The generation of a methyl carbon source from renewable and cheap sources is challenging. Herein, we describe a novel and an efficient route for methylation and acetylation of aza-heteroarenes using PEG-400 under O2and TsOH·H2O for the first time by tuning the reaction conditions using a different set of starting materials. The key features of the current protocol are oxidative C-O and C-C bond scission under metal-free conditions with good functional group tolerance, and a broad substrate scope. The potential applicability of the designed methodology was demonstrated for the synthesis of central nervous system (CNS) depressant and anticonvulsant drug molecules by a one-pot strategy.
Iron-Catalyzed Minisci Type Acetylation of N-Heteroarenes Mediated by CH(OEt)3/TBHP
Srinivasulu,Shantharjun,Vani,Ashalu, K. Chinna,Mohd,Wencel-Delord,Colobert,Reddy, K. Rajender
supporting information, p. 1815 - 1819 (2019/02/20)
Iron-catalyzed acetylation of electron deficient N-heteroarenes has been reported using triethylorthoformate as robust and inexpensive acetyl source. This new method is successfully applied for the acetylation of quinolines, isoquinoline, quinoxalines, arylpyridines, bipyridines, and benzothiazole.
