Photocatalytic Functionalization of Dihydroquinoxalin-2-Ones with Pyrazolones

被引：10

作者：

Rostoll-Berenguer, Jaume ^{[1
]}

Sierra-Molero, Francisco J. ^{[1
]}

Blay, Gonzalo ^{[1
]}

Pedro, Jose R. ^{[1
]}

Vila, Carlos ^{[1
]}

机构：

[1] Univ Valencia, Fac Quim, Dept Quim Organ, Dr Moliner 50, Valencia 46100, Spain

来源：

ADVANCED SYNTHESIS & CATALYSIS | 2022年 / 364卷 / 23期

关键词：

Organophotoredox catalysis; pyrazolone; quinoxalin-2-ones; visible-light photocatalysis; nitrogen heterocycles; PHOTOREDOX CATALYST; ACTIVATION; GW420867X; CHEMISTRY; DESIGN;

D O I：

10.1002/adsc.202201018

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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 good yields. The reaction can be extended to other nitrogen heterocycles such as 5-aminopyrazoles with good results.

引用

页码：4054 / 4060

页数：7

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