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Condensation of 1-Substituted 1,2,3,9a-Tetrahydro-9H-imidazo[1,2-a]indol-2-one Derivatives with Aromatic Aldehydes

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

Condensation of 1-alkyl-, 1-allyl-, and 1-benzyl-1,2,3,9a-tetrahydro-9H-imidazo[1,2-a]indol-2-ones with benzaldehydes in acetic acid and subsequent treatment of the reaction mixture with potassium hydroxide afforded 1-substituted 9a-(2-phenylethenyl)-1,2,3,9a-tetrahydro-9H-imidazo[1,2-a]indol-2-one derivatives. 1-Methyl- and 1-ethyl-9a-[2-(4-dimethylaminophenyl)ethenyl]-1,2,3,9a-tetrahydro-9H-imidazo[1,2-a]indol-2-ones were synthesized by alkylation of 9a-[2-(4-dimethylaminophenyl)ethenyl]-1,2,3,9a-tetrahydro-9H-imidazo[1,2-a]indol-2-one with methyl- and ethyl iodides in DMF in the presence of a strong base.

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Authors and Affiliations

  1. Department of Organic Chemistry, Faculty of Chemical Technology, Kaunas University of Technology, LT-3028, Kaunas, Lithuania

    A. Sackus & V. Amankaviciene

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  1. A. Sackus
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  2. V. Amankaviciene
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Sackus, A., Amankaviciene, V. Condensation of 1-Substituted 1,2,3,9a-Tetrahydro-9H-imidazo[1,2-a]indol-2-one Derivatives with Aromatic Aldehydes. Chemistry of Heterocyclic Compounds 38, 822–827 (2002). https://doi.org/10.1023/A:1020685704961

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