Title of article
An efficient and convenient protocol for the synthesis of quinoxalines and dihydropyrazines via cyclization–oxidation processes using HClO4·SiO2 as a heterogeneous recyclable catalyst
Author/Authors
Das، نويسنده , , Biswanath and Venkateswarlu، نويسنده , , Katta and Suneel، نويسنده , , Kanaparthy and Majhi، نويسنده , , Anjoy، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2007
Pages
4
From page
5371
To page
5374
Abstract
A convenient and straightforward method has been developed for the synthesis of quinoxalines and dihydropyrazines (DHPs) using α-bromo ketones and 1,2-diamines in the presence of silica supported perchloric acid (HClO4·SiO2) at room temperature. The quinoxalines and DHPs were presumably formed via cyclization–oxidation. The catalyst works under heterogeneous conditions and can be recycled.
Keywords
?-bromoketone , 1 , HClO4·SiO2 , 2-diamine , quinoxaline , Heterogeneous recyclable catalyst , Dihydropyrazine , Cyclization–oxidation processes
Journal title
Tetrahedron Letters
Serial Year
2007
Journal title
Tetrahedron Letters
Record number
1855794
Link To Document