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New four-component reactions in water: a convergent approach to the metal-free synthesis of spiro[indoline/acenaphthylene-3,4′-pyrazolo[3,4-b]pyridine derivatives

✍ Scribed by Kamaraj Balamurugan; Subbu Perumal; J. Carlos Menéndez


Book ID
108283545
Publisher
Elsevier Science
Year
2011
Tongue
French
Weight
1020 KB
Volume
67
Category
Article
ISSN
0040-4020

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## Abstract A new four‐component synthesis of spiro[4__H__‐indeno[1,2‐__b__]pyridine‐4,3′‐[3__H__]indoles] and spiro[acenaphthylene‐1(2__H__),4′‐[4__H__‐indeno[1,2‐__b__]pyridines] by the reaction of indane‐1,3‐dione, 1,3‐dicarbonyl compounds, isatins (=1__H__‐indole‐2,3‐diones) or acenaphthylene‐1