Synthesis of 1,2,4-Oxadiazoles by Tandem Reaction of Nitroalkenes with Arenes and Nitriles in the Superacid TfOH
作者:Andrei A. Golushko、Olesya V. Khoroshilova、Aleksander V. Vasilyev
DOI:10.1021/acs.joc.9b00812
日期:2019.6.7
The tandem reaction of nitroalkenes with arenes and nitriles in the superacid CF3SO3H (TfOH) results in the formation of 1,2,4-oxadiazole derivatives in yields up to 96%. This reaction proceeds via the consequent interaction of arenes and nitriles, as nucleophiles, with intermediate cationic species derived by the protonation of nitroalkenes in TfOH. This is novel and general synthesis of 1,2,4-oxadiazoles
在超强酸CF 3 SO 3 H(TfOH)中硝基烯烃与芳烃和腈的串联反应导致形成1,2,4-恶二唑衍生物,收率高达96%。该反应通过作为亲核试剂的芳烃和腈与由TfOH中硝基烯烃的质子化衍生的中间阳离子物质的相互作用而进行。这是1,2,4-恶二唑的新颖且通用的合成方法,它们是药物化学中非常重要的化合物。