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An efficient and environmentally benign protocol for the three-component synthesis of triazoloindazoles and indazolophthalazines via condensation of dimedone, aldehydes and urazole or phthalhydrazide catalyzed by ZrOCl2.8H2O as an inexpensive and eco-friendly catalyst with high catalytic activity under solvent-free conditions is reported. This protocol provides a new and improved method for obtaining triazoloindazoles and indazolophthalazines in terms of good yields, sim- ple experimental procedure and short reaction time.

ZrOCl2.8H2O as an Efficient Catalyst for the Three-Component Synthesis of Triazoloindazoles and Indazolophthalazines

ZrOCl₂.8H₂O as an Efficient Catalyst for the Three-Component Synthesis of Triazoloindazoles and Indazolophthalazines