Elsevier

Tetrahedron

Volume 30, Issue 10, 1974, Pages 1231-1236
Tetrahedron

Synthese von imidazo[1,5-a]- und pyrazino[1,2-a]benzimidazolen

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Zusammenfassung

Aus 2-α-Aminobenzyl (benzhydryl)-benzimidazolen (2) werden 1,2-Dihydro-3H-imidazo[1,5-a]benzimidazole (6), 1-Oxo-1,2-dihydro-3H-imidazo[1,5-a]benzimidazole (8), 3H-Iminidazo[1,5-a]benzimidazole (7), 3-Oxo-1,2,3,4-tetrahydro-pyrazmo[1,2-a]benzimidazole (12) und 3,4-Dioxo-1,2,3,4-tetrahydro-pyrazino[1,2-a]benzimidazole (13) synthetisiert.

Abstract

1,2-Dihydro-3H-imidazo[1,5-a]benzimidazoles (6), 1-oxo-1,2-dihydro-3H-imidazo[ 1,5-a] benzimidazoles (8), 3H-imidazo[1,5-a]benzimidazoles (7), 3-oxo-1,2,3,4-tetrahydro-pyrazino[1,2-a] benzimidazoles (12), and 3,4-dioxo-1,2,3,4-tetrahydro-pyrazino[1,2-a]benzinudazoles (13) were synthesized from 2-α-aminobenzyl (benzhydryl)-benzimidazoles (2).

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