Highly efficient synthesis of triazolo[1,2-a]indazole-triones and novel spiro triazolo[1,2-a]indazole-tetraones under solvent-free conditions |
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| Authors: | Alireza Hasaninejad Abdolkarim Zare Mohsen Shekouhy |
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| Institution: | a Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iranb Department of Chemistry, Payame Noor University (PNU), Bushehr 1698, Iran |
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| Abstract: | A new, convenient, and high yielding procedure for the synthesis of triazolo1,2-a]indazole-triones by the condensation reaction between dimedone, aryl aldehydes, and ueazoles in the presence of a catalytic amount of sulfonated polyethylene glycol (PEG-SO3H) as a highly stable and reusable eco-friendly degradable polymeric catalyst is described under solvent-free conditions. This procedure has also been applied successfully for the synthesis of novel spiro triazolo1,2-a]indazole-tetraones. |
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| Keywords: | Combinatorial chemistry Multi-component reaction PEG-SO3H Urazole Triazolo[1 2-a]indazole-triones Spiro triazolo[1 2-a]indazole-tetraone |
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