Abstract
An easy and simple spiroannulation of the Morita-Baylis-Hillman adduct of isatin derivatives with anthracene was achieved in moderate-to-good yields (37-75%). The spiroderivatives synthesized in this work exhibited green fluorescence properties. The reaction occurred in metal-free eco-friendly K-10 clay-mediated conditions. The final products have multiple structural features such as 3-spirooxindole, fluorophoric anthracene, phenanthracene, phenalene, and perylene cores.
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