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ChemInform Abstract: One-Pot Synthesis of 4-(2,3-Dihydro-2-hydroxy-1,3-dioxo-1H-inden-2yl)-Substituted 1-Aryl-1H-pyrazole-3-carboxylates via a Tandem Three-Component Reaction.

✍ Scribed by Abdolali Alizadeh; Ameneh Zarei; Atieh Rezvanian

Book ID: 112045954
Publisher: John Wiley and Sons
Year: 2012
Weight: 24 KB
Volume: 43
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.201226121

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## Abstract The reactive 1 : 1 zwitterionic intermediate formed by the addition of isocyanides to dialkyl acetylenedicarboxylates was trapped with 4‐arylurazoles to produce the highly functionalized pyrazolo[1,2‐__a__][1,2,4]triazoles **5** in good yields (__Table__). The structures of the products