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ChemInform Abstract: Reactions of 2-(Diformylmethylidene)-3,3-dimethylindole with Hydrazides: Synthesis of New Pyrazolylindolenine Derivatives — The Unprecedented One-Pot Pyrazole—Thiadiazole Double Annulation.

✍ Scribed by Hamid Khaledi; Hapipah Mohd Ali; Noel Francis Thomas; Seik Weng Ng

Publisher: John Wiley and Sons
Year: 2011
Weight: 32 KB
Volume: 42
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.201142114

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## Abstract A series of new pyrazolylindolenine derivatives has been synthesized through the reaction of 2‐(diformylmethylidene)‐3,3‐dimethylindole (diformyl), prepared by the Vilsmeier reaction, with six different hydrazides. Although the reaction of __p__‐toluenesulfonylhydrazide and S‐benzyldith

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