6533b82afe1ef96bd128c184
RESEARCH PRODUCT
Photocatalytic Functionalization of Dihydroquinoxalin‐2‐Ones with Pyrazolones
Jaume Rostoll‐berenguerFrancisco J. Sierra‐moleroGonzalo BlayJosé R. PedroCarlos Vilasubject
Compostos heterocíclicsCatàlisiGeneral ChemistryQuímica orgànicadescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-11-21 | Advanced Synthesis & Catalysis |