Water mediated reactions: TiO₂and ZnO nanoparticle catalyzed multi component domino reaction in the synthesis of tetrahydroacridinediones, acridindiones, xanthenones and xanthenes

Abstract

Tetrahydroacridine-1,8-(2<italic>H</italic>,5<italic>H</italic>,9<italic>H</italic>,10<italic>H</italic>)-diones<bold>4</bold>from 1,3-cyclohexanedione and/or dimedone 1,2-chloro-3-formylquinoline<bold>2</bold>and anilines<bold>3</bold>in water at 90 °C were obtained by domino reaction approach.