Ultrasound-promoted catalyst-free one-pot four component synthesis of 2H-indazolo[2,1-b]phthalazine-triones in neutral ionic liquid 1-butyl-3-methylimidazolium bromide

A catalyst-free one-pot four component methodology for the synthesis of 2H-indazolo[2,1-b]phthalazine-triones under ultrasonic irradiation at room temperature using 1-butyl-3-methylimidazolium bromide, [Bmim]Br, as a neutral reaction medium is described. A broad range of structurally diverse aldehyd...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2012-03, Vol.19 (2), p.307-313
Main Authors: SHEKOUHY, Mohsen, HASANINEJAD, Alireza
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Chemistry Techniques, Synthetic - methods
Exact sciences and technology
General and physical chemistry
Imidazoles - chemistry
Ionic Liquids - chemistry
Phthalazines - chemical synthesis
Phthalazines - chemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Temperature
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Ultrasonic chemistry
Ultrasonics
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Summary:A catalyst-free one-pot four component methodology for the synthesis of 2H-indazolo[2,1-b]phthalazine-triones under ultrasonic irradiation at room temperature using 1-butyl-3-methylimidazolium bromide, [Bmim]Br, as a neutral reaction medium is described. A broad range of structurally diverse aldehydes (aromatic aldehydes bearing electron withdrawing and/or electron releasing groups as well as heteroaromatic aldehydes) were applied successfully, and corresponding products were obtained in good to excellent yields without any byproduct.
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2011.07.011