Pyridazino (4, 5-b) carbazole: Synthese et etude des spectres de resonance magnetique nucleaire.

…, H LANDELLE, MAX RoBBA

Index: Lancelot, Jean-Charles; Landelle, Henriette; Robba, Max Chemical & Pharmaceutical Bulletin, 1984 , vol. 32, # 3 p. 902 - 908

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Citation Number: 5

Abstract

The acid anhydrides (5-7) were obtained by treatment of the corresponding 2, 3- carbazoledicarboxylic acids (2-4) with acetic anhydride. Friedel-Crafts reaction of these anhydrides with benzene or toluene gave either 3-aroylcarbazole-2-carboxylic acids (8-11) or 6, 7-phtaloylcar bazole (19-21) according to the reaction conditions. Treatment of the acids (8-11) with hydrazine hydrate gave 3, 4-dihydro-4-oxo-pyridazino [4, 5-b] carbazoles ...