Nano-tube TiO2 as a new catalyst for eco-friendly synthesis of imines in sunlight

Nanomaterials are considered as suitable heterogeneous catalysts for many organic reactions. Herein nano-tube TiO2 has been reported as a heterogeneous catalyst, for synthesis of imines in sunlight at room temperature under solvent-free conditions. The condensation of less electrophilic carbonyl compounds with poorly nucleophilic amines was afforded imines in excellent yields.