A New Four-Component Reaction for the Synthesis of Spiro[4H-indeno[1,2-b]pyridine-4,3 '-[3H]indoles]

[摘要]：A new four-component synthesis of spiro[4H-indeno[1,2-b]pyridine-4,3'-[3H]indoles] and spiro[acenaphthylene-1(2H), 4'-[4H-indeno[1,2-b]pyridines] by the reaction of indane-1,3-dione, 1,3-dicarbonyl compounds, isatins (=1H-indole-2,3-diones) or acenaphthylene-1,2-dione, and AcONH(4) in refluxing toluene in the presence of a catalytic amount of pyridine is reported.

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