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Protonation of indane-1,2,3-trione: Formation of 1,2,3-trihydroxyindane trication - a new aromatic system

✍ Scribed by Daniel Bruck; Arie Dagan; Mordecai Rabinovitz

Book ID: 103405312
Publisher: Elsevier Science
Year: 1978
Tongue: French
Weight: 282 KB
Volume: 19
Category: Article
ISSN: 0040-4039
DOI: 10.1016/0040-4039(78)80045-8

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## Abstract The hydrazone **1** reacts with DMFDMA to give 2‐dimethylaminomethylene‐3‐(phenylhydrazono)‐indan‐1‐one **(2)** which reacts with hydrazine hydrate and the pyrazole derivative **4** to afford the indenopyrazole derivatives **3** and the indenofluorene **5** respectively. The reaction of