16174-40-6Relevant academic research and scientific papers
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.
Ozonolysis of Quinolines: A Versatile Synthesis of Polyfunctional Pyridines
O'Murchu, C.
, p. 880 - 882 (2007/10/02)
A simple, safe and efficient procedure, easily adapted to a large scale, is described for the synthesis of substituted quinolines 2, which are readily oxidized by ozone in the presence of mineral acid, followed by an oxidative work up with hydrogen peroxide to afford substituted 2,3-pyridinedicarboxylic acids 3a-d,f and acyl pyridines 3e, g.
