- FeCl3-catalyzed sequential cyclization for the construction of 12-aryl 5,7-dihydropyrido[2,3-b:6,5-b']diindoles
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A facile approach to prepare 12-aryl 5,7-dihydropyrido[2,3-b:6,5-b']diindoles via tandem cyclizations is described. FeCl3 is used as the catalyst for the reaction between o-aminophenylacetonitriles and aromatic aldehydes, generating 5,7-dihydropyrido[2,3-b:6,5-b']diindoles derivatives in moderate to high yields.
- Chen, Xiaoqian,Li, Lin,Liu, Jin-Biao,Wan, Changfeng
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- REACTION OF A 2-AMINOINDOLE WITH DIFUNCTIONAL COMPOUNDS
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The reaction of a 2-aminoindole with arylidenemalonic and arylidenecyanoacetic esters was studied.The effect of substituents in the benzene ring of the arylidenemalonic ester on the reaction pathway is demonstrated.
- Portnov, Yu. N.,Bulaga, S. N.,Zabrodnyaya, V. G.
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p. 746 - 749
(2007/10/02)
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- INTRAMOLECULAR CYCLIZATION OF N-PHTHALYL-β-ARYL-β-ALANINE PHENYLHYDRAZIDE
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The reaction of N-phthalyl-β-aryl-β-alanine N'-methyl-N'-phenylhydrazides with phosphorus oxychloride (at cca 80 deg C) is accompanied by further transformations of the initially formed 2-aminoindole derivatives and leads to isoindolopyrimidoindole derivatives.Intermediate 2-aminoindoles were isolated at lower reaction temperatures.The hydrolysis of the isoindolopyrimidoindole derivatives was studied.The structures of the compounds obtained were established on the basis of the PMR, IR, and UV spectra and the results of elementary analysis.
- Portnov, Yu. N.,Zabrodnyaya, V. G.,Voronin, V. G.,Kost, A. N.
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p. 703 - 706
(2007/10/02)
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