Visible-Light-Induced Divergent C–H Esterification/Alkylation of Quinoxalin-2(1H)-ones with Aldehydes under Mild Conditions

Organic Letters, Journal Year: 2025, Volume and Issue: 27(10), P. 2526 - 2531

Published: March 5, 2025

Herein, we introduce an efficient and straightforward strategy for the selective C-H esterification alkylation of quinoxalin-2(1H)-ones with aldehydes. A key feature our study is ability to perform both using different types The reaction system highly compatible a range aldehydes, yielding C3-esterified C3-alkylated products in moderate-to-good yields. applicability this approach further enhanced by its scalability through continuous-flow synthesis, late-stage modification significant molecules, product derivatization. Our mechanistic investigations reveal radical relay mechanism, triggered hydrogen atom transfer process.

Language: Английский

Photo-induced aerobic cross-coupling of quinoxalin-2(1H)-ones with electron-rich thiophenes

Organic & Biomolecular Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Herein, an efficient aerobic cross-coupling of quinoxazolines with electron-rich thiophenes was presented. It's easy and effective access to 3-thiophenyl quinoxalinones without external photo-catalyst or transition-metal catalyst.

Language: Английский