Nitration of 2,3-dihydroimidazo[1,2-a]benzimidazole and its N9-substituted derivatives
2021
Abstract 7-Nitro-2,3-dihydroimidazo[1,2-a]benzimidazole and its N9-substituted derivatives can be conveniently synthesized by nitration of the corresponding tricyclic precursors with a nitrating mixture or with the HNO3 /CF3COOH system. This reaction occurs fairly smoothly and with good regioselectivity.
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