A catalyst-free, one-pot multicomponent synthesis of spiro-benzimidazoquinazolinones via a Knoevenagel–Michael-imine pathway: a microwave assisted approach

A novel multi-component route for the synthesis of spiro-benzimidazoquinazolinones has been developed under microwave irradiation. It involves a one-pot three-component reaction of acenaphthoquinone or isatin, 1,3-diketone and 2-aminobenzimidazole in ethanol at 180 W and 160 °C temperature. An attra...

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Published inRSC advances Vol. 6; no. 48; pp. 41897 - 41906
Main Authors Maloo, Preeti, Roy, Tapta Kanchan, Sawant, Devesh M., Pardasani, Ram T., Salunkhe, Manikrao M.
Format Journal Article
LanguageEnglish
Published 01.01.2016
Subjects
Catalysts
Computation
Ethanol
Ethyl alcohol
Irradiation
Microwaves
Pathways
Synthesis
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Summary:A novel multi-component route for the synthesis of spiro-benzimidazoquinazolinones has been developed under microwave irradiation. It involves a one-pot three-component reaction of acenaphthoquinone or isatin, 1,3-diketone and 2-aminobenzimidazole in ethanol at 180 W and 160 °C temperature. An attractive feature of this method is the mild conditions with operational simplicity. The computational studies provide insight into the mechanistic aspects of the reaction.
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ISSN:2046-2069
2046-2069
DOI:10.1039/C6RA05322J