Author:
Stýskala Jakub,Slouka Jan,Hejsek Miloslav,Bekárek Vojtěch
Abstract
A series of arylhydrazones 1a-1i was prepared by coupling of arene diazonium salts with ethyl N-(benzo[b]furan-2-yl)carbamate. The hydrazones 1 were thermally cyclized to the corresponding 2-aryl[1]benzofuro[2,3-e][1,2,4]triazin-3(2H)-ones 2a-2i, derivatives of a new fused ring system. Compounds 2 were transformed by hydrolytic splitting to the corresponding 1-aryl-5-(2-hydroxyphenyl)-6-azauracils 3a-3i.
Publisher
Institute of Organic Chemistry & Biochemistry
Cited by
6 articles.
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1. ChemInform Abstract: Cyclization Reactions of Hydrazones. Part 24. Synthesis of 2-Aryl[1]benzofuro[2,3-e][1,2,4]triazin-3(2H)-ones and Their Use for Preparation of 1-Aryl-5-(2-hydroxyphenyl)-6-azauracils.;ChemInform;2010-06-23
2. Synthesis and Study of Reactivity of Pyrrolo[3,2-e][1,2,4]triazine System;HETEROCYCLES;2008
3. Utilization of cleavage of the [1]benzofuro[2,3-e][1,2,4]triazine ring for the synthesis of oxygen, nitrogen and sulfur derivatives of [1,2,4]triazine;Journal of Heterocyclic Chemistry;2003-09
4. Synthesis of some [1,2,4]triazino[5,6-b]quinoline derivatives;Journal of Heterocyclic Chemistry;2002-11
5. Cyclization Reactions of Hydrazones XXVI: Synthesis of 2-Aryl-2,3-dihydro-naphto- [1',2':4,5]furo[2,3-e]1,2,4-triazin-3-ones and their use for the preparation of 1-Aryl-5-(2-hydoxy-1-naphtyl)-6-azauracils;Heterocyclic Communications;1999-01