Title of article
Unexpected formation of pyrrolo[1,2-a]quinoxaline derivatives during the multicomponent synthesis of pyrrolo[1,2-a]benzimidazoles
Author/Authors
Nicolescu، نويسنده , , Alina and Deleanu، نويسنده , , Calin and Georgescu، نويسنده , , Emilian and Georgescu، نويسنده , , Florentina and Iurascu، نويسنده , , Ana-Maria and Shova، نويسنده , , Sergiu and Filip، نويسنده , , Petru، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2013
Pages
3
From page
1486
To page
1488
Abstract
New pyrrolo[1,2-a]benzimidazole and pyrrolo[1,2-a]quinoxaline derivatives are obtained via one-pot, three-component reactions from 1-benzylbenzimidazoles, α-bromocarbonyl compounds, and non-symmetrical activated acetylenic dipolarophiles in propylene oxide as both the reaction medium and acid scavenger, at room temperature. When the same reaction is performed in 1,2-epoxybutane at reflux temperature only the pyrrolo[1,2-a]benzimidazole derivative is obtained.
Keywords
2-a]quinoxalines , Single crystal x-ray , 1H , 13C and 15N NMR , 2-a]benzimidazoles , Synthesis
Journal title
Tetrahedron Letters
Serial Year
2013
Journal title
Tetrahedron Letters
Record number
1883980
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