1.
On the Redox Properties of the Dimers of Thiazol-2-ylidenes That Are Relevant for Radical Catalysis.
ACS Org Inorg Au
; 3(3): 136-142, 2023 Jun 07.
Artigo
em Inglês
| MEDLINE
| ID: mdl-37303499
RESUMO
We report the isolation and study of dimers stemming from popular thiazol-2-ylidene organocatalysts. The model featuring 2,6-di(isopropyl)phenyl (Dipp) N-substituents was found to be a stronger reducing agent (Eox = -0.8 V vs SCE) than bis(thiazol-2-ylidenes) previously studied in the literature. In addition, a remarkable potential gap between the first and second oxidation of the dimer also allows for the isolation of the corresponding air-persistent radical cation. The latter is an unexpected efficient promoter of the radical transformation of α-bromoamides into oxindoles.