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چکیده
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Pentaerythritol was applied as an effective, biodegradable, nontoxic, mild, and commercially available H-bonding organocatalyst for synthesis of indazolo[2,1-b] phthalazine-trione derivatives via one-pot three-component condensation of aromatic aldehydes, phthalhydrazide, and dimedone under thermal solvent-free conditions in high to excellent yield
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