Journal
APPLIED CATALYSIS A-GENERAL
Volume 345, Issue 2, Pages 128-133Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2008.04.032
Keywords
silica sulfuric acid; heterogeneous catalyst; solvent-free; 2H-indazolo[2,1-b]phthalazine-triones; phthalhydrazide
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Silica sulfuric acid as an efficient and reusable heterogeneous catalyst have been used for the preparation of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives from the three-component condensation reaction of phthalhydrazide, dimedone, and aromatic aldehydes under solvent-free conditions in good to excellent yields and short reaction times. (C) 2008 Elsevier B.V. All rights reserved.
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