Abstract
One-pot three-component cyclo-condensation reaction of bis(indole-2,3-diones) with dimedone, 3-methyl-1H-pyrazol-5(4H)-one, or 6-aminouracil in boiling acetic acid afforded bis-spirocyclic oxindoles linked to acridine, dipyrazolo[3,4-b:4',3'-e]pyridine, and pyrido[2,3-d:6,5-d']dipyrimidine, respectively.
Graphical Abstract
![](/cms/asset/3babfdf2-cc3c-4a39-b91f-7463f4e2d5e3/lsyc_a_1908564_uf0001_c.jpg)