In the present study, a three-phase system (EtOAc-water-EtOAc) for visible photocatalytic reduction of nitroaromatic compounds using β-CD-TiO2 was used. Also, for the first time, a comparison of water and magnetized water was investigated. Various factors such as amounts of TiO2, β-CD, PEG-400, light, time, and solvent were considered. Additionally, the phase-transfer catalytic character of β-CD- TiO2 was studied through transport tests. The UV–visible spectroscopic analysis supports higher solubility of nitroaromatic starting materials in magnetized water compared to deionized water. Analyses of the β-CD-TiO2 photocatalyst, including TEM, FESEM, EDAX-mapping, TGA, BET, DLS and ATR-FTIR were performed. Tuning of reaction conditions for obtaining valuable salicyl imine-based compounds in one-pot synthesis was performed. A practical scale of starting materials, short reaction time, fewer side reactions, simple separation of products and efficient one-pot synthesis of valuable salicyl imines are achievements of this three-phase system.

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