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Three-Component One-Pot Synthesis of Functionalized 1,2,3,6-Tetrahydropyrano[4,3-b]pyrroles.

✍ Scribed by Issa Yavari; Manzarbanoo Esnaashari

Publisher: John Wiley and Sons
Year: 2005
Weight: 14 KB
Volume: 36
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200541138

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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