Journal
SYNTHETIC COMMUNICATIONS
Volume 45, Issue 21, Pages 2498-2510Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00397911.2015.1092551
Keywords
Ambient temperature; ammonium acetate; 1,3-indanedione; multicomponent; spiro[4H-indeno[1,2-b]pyridine-4,3 '-[3H]indoles]
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Funding
- University Grants Commission, New Delhi [42- 394/2013(SR)]
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An efficient, four-component reaction of isatin, 1,3-indanedione, ethyl acetoacetate, and ammonium acetate in ethanol/water (9:1) system furnished spiro[4H-indeno[1,2-b]pyridine-4,3-[3H]indoles] at room temperature. Merits of the method are mild reaction conditions, simple workup procedure, and ambient temperature. The synthesized compounds exhibit excellent fluorescence properties.
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