Neodymium-based metal-organic framework as an efficient catalyst for green synthesis of benzylidene-2-phenylhydrazine analogues

Abstract

Neodymium-based metal-organic framework (Nd-MOF) has been prepared as an efficient heterogeneous catalyst in the click synthesis of benzylidine-2-phenylhydrazine analogs for the first time. In the presence of Nd-MOF, the reaction proceeds with mild conditions and a comparable yield has been achieved with less reaction time. In order to synthesize the [Nd(NDC) 1.5 (DMF)(H 2 O) 0.5 .0.5DMF] n , neodymium is used as a metal node to act as a cation and naphthalene-2,6-dicarboxylic acid as a well-extended organic linker as a dicarboxylate anion for building good coordinated 3D polymer. The synthesized Nd-MOF nanocatalyst was characterized by Powder XRD, BET, TGA, FT-IR, SEM-EDX, and TEM. Finally, the obtained products were examined through 1 H NMR, 13 C NMR, 15 N NMR and FT-IR. The nanocatalyst was completely recyclable and reusable for ten cycles without any loss of catalytic efficiency. Further, the nanocatalyst shows a crucial role in reducing the reaction time under mild experimental conditions. Additionally, the target molecules were afforded simple handling, eco-friendly and excellent yields with maximum efficiency.