Catalyst-Free Synthesis of Benzofuran Derivatives from Cascade Reactions between Nitroepoxides and Salicylaldehydes
作者:Mohammad A. Ranjbari、Hossein Tavakol
DOI:10.1021/acs.joc.1c00143
日期:2021.3.19
Different benzofuran derivatives are synthesized via a catalyst-free reaction between nitroepoxides and salicylaldehydes. In the employed methodology, K2CO3 and DMF have been used at 110 °C, and the reactions were completed after 12 h in 33–84% yields. The highest yields were obtained using 3-nitrosalicylaldehyde. Finally, a plausible mechanism was proposed for the reaction, and some evidence was provided
通过硝基环氧化物和水杨醛之间的无催化剂反应合成不同的苯并呋喃衍生物。在所采用的方法中,已在110°C下使用K 2 CO 3和DMF,反应12小时后以33-84%的收率完成反应。使用3-硝基水杨醛可获得最高的收率。最后,提出了一种可行的反应机理,并为该机理提供了一些证据,例如检测释放的乙酸根阴离子(使用FTIR)以及分离和确定关键中间体的结构。