[EN] TRIAZOLOPYRAZINE DERIVATIVES AND THEIR USE FOR TREATING NEUROLOGICAL AND PSYCHIATRIC DISORDERS [FR] DÉRIVÉS DE TRIAZOLOPYRAZINE ET LEUR UTILISATION POUR LE TRAITEMENT DE TROUBLES NEUROLOGIQUES ET PSYCHIATRIQUES
[EN] TRIAZOLOPYRAZINE DERIVATIVES AND THEIR USE FOR TREATING NEUROLOGICAL AND PSYCHIATRIC DISORDERS [FR] DÉRIVÉS DE TRIAZOLOPYRAZINE ET LEUR UTILISATION POUR LE TRAITEMENT DE TROUBLES NEUROLOGIQUES ET PSYCHIATRIQUES
Synthesis of Dihydroquinoxalinones from Biomass-Derived Keto Acids and o-Phenylenediamines
作者:Wenfeng Zhao、Hu Li、Qingmei Ge、Hang Cong、Song Yang
DOI:10.1021/acs.joc.3c02821
日期:2024.3.15
A novel catalyst-free cascade amination/cyclization/reduction reaction was developed for the synthesis of various Dihydroquinoxalinones under mild conditions from accessible biomass-derived keto acids and 1,2-phenylenediamines with ammonia borane as a hydrogen donor. This single-step approach enables a simple and eco-friendly route toward the directsynthesis of 12 kinds of Dihydroquinoxalinones in
Synthesis of Substituted 1,3-Dimethyl-1H-quinoxalin-2-ones from Aniline Derivatives
作者:Xun Li、Donghua Wang、Jifeng Wu、Wenfang Xu
DOI:10.3987/com-05-10461
日期:——
Substituted 1,3-dimethyl-1H-quinoxalin-2-ones (7) have been synthesized through the procedures of acylation, nitration, reduction, intramolecular alkylation, oxidation, and N-methylation starting from 3,4-disubstituted aniline.
Novel Approach to 3‐Methyl‐1H‐quinoxalin‐2‐ones
作者:Xun Li、Donghua Wang、Jifeng Wu、Wenfang Xu
DOI:10.1080/00397910500213880
日期:2005.10
A novel approach to the synthesis of 3-methyl-1H-quinoxalin-2-ones has been described. These compounds were regioselectively prepared by starting from substituted phenylamines and alpha-chloropropionyl chloride through the efficient procedures of acylation, nitration, reduction, intramolecular alkylation, and oxidation.