A New Method of Synthesis of 2-Alkoxycarbonyl 3-aryg-3,4-dihydro Quinoxalines and 2-Alkoxycarbonyl3-aryl Quinoxalines
作者:Gaz Abderrazak、Souizi Abdelaziz、Coudert Gérard
DOI:10.1080/00397919908085976
日期:1999.10
Cyanoesters epoxides 1, when treated with o-phenylenediamine in presence or absence of hydrogen chloride, at reflux of acetonitrile, give the 2-alkoxycarbonyl-3-aryl-3,4-dihydro quinoxalines and 2-alkoxy carbonyl-3-aryl quinoxalines in good yields.
Synthesis of novel α-keto hydroxamic acids
作者:Saïd Boukhris、Abdelaziz Souizi、Albert Robert
DOI:10.1016/s0040-4039(98)01326-4
日期:1998.8
Simple conditions are described to afford modified alpha-keto hydroxamic acids by reaction of halohydrins with hydroxylamine hydrochloride. (C) 1998 Published by Elsevier Science Ltd. Ali rights reserved.
Easy access to β-halo amino esters and aziridine 2-carboxylic esters from halohydrins
作者:Saı̈d Boukhris、Abdelaziz Souizi
DOI:10.1016/s0040-4039(03)00631-2
日期:2003.4
The halohydrins prepared from epoxide esters, were treated with hydroxylamine derivatives. In subsequent reaction with NaOH/K2CO3/Bu4NHSO4 the N-protected beta-halo alpha-aminoesters thus obtained were converted into N-hydroxy ariridine 2-carboxylic esters in good yields. (C) 2003 Elsevier Science Ltd. All rights reserved.