作者:Jaume Rostoll‐Berenguer、Francisco J. Sierra‐Molero、Gonzalo Blay、José R. Pedro、Carlos Vila
DOI:10.1002/adsc.202201018
日期:2022.12.8
A visible-light photoredox functionalization of 3,4-dihydro-quinoxalin-2-ones with pyrazolones using an inexpensive organophotoredox catalyst is described. The reaction uses 9,10-phenanthrenedione as photocatalyst, a very simple and cheap photocatalyst, a HP single Blue LED (455 nm) as visible-light source and oxygen from air as terminal oxidant, obtaining the corresponding acetylated pyrazoles with
描述了使用廉价的有机光氧化还原催化剂对 3,4-二氢-喹喔啉-2-酮与吡唑啉酮进行可见光光氧化还原功能化。该反应使用9,10-菲二酮作为光催化剂,一种非常简单且廉价的光催化剂,HP单蓝光LED(455 nm)作为可见光源,空气中的氧气作为终端氧化剂,以良好的产率得到相应的乙酰化吡唑。该反应可以扩展到其他含氮杂环化合物,例如 5-氨基吡唑,并取得了良好的效果。