One-Pot Synthesis of Spiro[diindeno[1,2-b:2 ',1 '-e]pyridine-11,3 '-indoline]-triones

[摘要]：A one-pot and pseudo four-component synthesis of spiro[diindeno[1,2-b:2',1'-e]pyridine-11,3'-indoline]-trione derivatives by cyclo-condensation reaction of isatins, 1,3-indandione, and ammonium acetate in refluxing acetic acid is reported.

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