Switchable synthesis of benzimidazole/quinoxaline C-glycosides with o-phenylenediamines and sulfoxonium ylide glyco-reagents

Abstract

A novel switchable approach for the synthesis of benzimidazole/quinoxaline C-glycosides is introduced. This versatile catalytic system facilitates the reaction of o-phenylenediamines with carbonyl sulfoxonium ylide glyco-reagents under mild conditions to selectively form 2-glycoside quinoxalines and 2-glycoside benzimidazoles, through [OsCl2(p-cymene)]2 and AgSbF6 catalysts, respectively. The process is adaptable as it can generate a variety of heteroarene C-glycosides by accommodating a wide range of sugar donors. It is also ideal for the modification of compounds like varenicline due to its excellent functional group compatibility, mild reaction conditions, and wide substrate range.

Graphical abstract: Switchable synthesis of benzimidazole/quinoxaline C-glycosides with o-phenylenediamines and sulfoxonium ylide glyco-reagents

Supplementary files

Article information

Article type
Communication
Submitted
14 mag 2025
Accepted
03 lug 2025
First published
07 lug 2025

Chem. Commun., 2025, Advance Article

Switchable synthesis of benzimidazole/quinoxaline C-glycosides with o-phenylenediamines and sulfoxonium ylide glyco-reagents

D. Liu, X. Hu, C. Zhang, M. Wen, X. Ren and X. Liu, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC02719E

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