Hexafluoro-2-propanol-assisted quick and chemoselective nitro reduction using iron powder as catalyst under mild conditions
作者:Xu-Ling Chen、Bai-Ru Ai、Yu Dong、Xiao-Mei Zhang、Ji-Yu Wang
DOI:10.1016/j.tetlet.2017.08.009
日期:2017.9
Hexafluoro-2-propanol as the promoter for the quick nitro reduction using a combination of iron powder and 2 N HCl aqueous solution is reported. This methodology has several positive features, as it is of room temperature, remarkably short reaction time. A wide range of substrates including those bearing reducible functional groups such as aldehyde, ketone, acid, ester, amide, nitrile, halogens, even allyl, propargyl
据报道,六氟-2-丙醇用作促进剂,可结合使用铁粉和2 N HCl水溶液进行快速硝基还原。该方法具有室温的几个积极特征,反应时间非常短。包括具有醛基,酮基,酸基,酯基,酰胺基,腈基,卤素基,甚至烯丙基基,炔丙基基和杂环基在内的可还原官能团的那些底物,都可以化学选择性地还原,即使以克为单位,收率也达到良好或优异的收率。值得注意的是,定量地实现了3-硝基苯基硼酸的高选择性还原。所述还原还耐受常见的保护基,并且脂族硝基化合物1-硝基辛烷可以成功地还原。