Journal
MONATSHEFTE FUR CHEMIE
Volume 141, Issue 4, Pages 425-430Publisher
SPRINGER WIEN
DOI: 10.1007/s00706-010-0283-7
Keywords
Multicomponent reaction; 1H-indazolo[1,2-b]phthalazinetrione; Aldehyde; Phthalhydrazide; Heteropolyacid; Solvent-free conditions
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Funding
- National Natural Science Foundation of China [20872025]
- Nature Science Foundation of Hebei Province [B2008000149]
- Research Foundation for the Graduate Program of Hebei Normal University
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Efficient one-pot condensation of aldehyde, dimedone, and phthalhydrazide has been achieved in the presence of a catalytic amount of tungstosilicic acid under solvent-free conditions. A variety of 1H-indazolo[1,2-b]phthalazinetrione derivatives were prepared in high to excellent yields in short time.
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