TRICYCLIC HETEROAROMATIC SYSTEMS - 1,2,4-TRIAZOLO[1,5-A]QUINOXALINE

被引：10

作者：

CATARZI, D

CECCHI, L

COLOTTA, V

FILACCHIONI, G

MELANI, F

机构：

[1] Dipartimento di Scienze Farmaceutiche, Universita' di Firenze, Firenze, 50121, Via Gino Capponi

来源：

JOURNAL OF HETEROCYCLIC CHEMISTRY | 1992年 / 29卷 / 05期

关键词：

D O I：

10.1002/jhet.5570290520

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The parent 1,2,4-triazolo[1,5-a]quinoxaline was prepared by a few-step reaction from ethyl N1-(2-nitrophenyl)-N3-ethoxalyloxamidrazonate, which afforded the key intermediate diethyl 1-(2-nitrophenyl)-1,2,4-triazole-3,5-dicarboxylate in satisfactory yield. The latter was cyclized, hydrolyzed, decarboxylated, reduced and dehydrogenated to yield the title compound.

引用

页码：1161 / 1163

页数：3

共 10 条

[1]

COLOTTA V, 1991, FARMACO, V46, P1139

[2]

Fusco R., 1956, GAZZ CHIM ITAL, V86, P484

[3] AZOMALONIC ESTER SYNTHESES .1. ONE-STEP SYNTHESIS OF TRIAZOLO[1,4]BENZODIAZEPINES FROM AZOMALONATES - PREPARATION OF NOVEL POLYAZA TRICYCLES FROM DIETHYL (2-CHLOROACETAMIDO)MALONATE [J].