NiFe‐LDH@MOF: A Novel MOF‐Pillared Layered Double Hydroxide as an Efficient and Reusable Catalyst for the Synthesis of 2‐Amino‐4H‐Chromenes

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The novel bifunctional nanocomposite NiFe-LDH@MOF acts as an efficient, versatile, and reusable catalyst for the synthesis of 2-amino-4H-chromenes. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

Setareh Ebrahimi‐Vaghar; Fatemeh Tamaddon; Mehri Salimi; Alireza Farrokhi

doi:10.1002/aoc.70646

September 2, 2026Applied Organometallic Chemistry

NiFe‐LDH@MOF: A Novel MOF‐Pillared Layered Double Hydroxide as an Efficient and Reusable Catalyst for the Synthesis of 2‐Amino‐4H‐Chromenes

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Key Points

Synthesize and characterize a bifunctional MOF-pillared layered double hydroxide nanocomposite (NiFe-LDH@MOF) to serve as a recyclable catalyst for preparing 2-amino-4H-chromenes.
Fabricated NiFe-LDH@MOF via solvothermal anchoring of the dual acid–base ligand 2,5-pyridinedicarboxylic acid onto synthesized NiFe-LDH sheets.
Characterized the nanocomposite using X-ray diffraction, microscopic imaging, energy-dispersive X-ray spectroscopy, surface area analysis, thermogravimetric analysis, and ICP-OES.
Evaluated catalytic performance in one-pot tandem Knoevenagel, Michael, and cyclization reactions combining aromatic aldehydes, malononitrile, and dimedone or beta-naphthol.
Elemental quantification by ICP-OES confirmed a metal loading of 28.4 wt% nickel and 3.9 wt% iron within the organometallic framework.
The nanocomposite facilitated rapid tandem cyclization reactions yielding diverse 2-amino-4H-chromenes with high reaction efficiency, simplified workup, and reusability.

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Implication

Experimental study demonstrates efficient multicomponent chromene synthesis using a bifunctional NiFe-LDH@MOF nanocomposite, highlighting a reusable heterogeneous catalyst for tandem reactions.

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Ebrahimi‐Vaghar et al. (2026) studied this question.

synapsesocial.com/papers/6a99365f636c6408cfa7f74d https://doi.org/10.1002/aoc.70646

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NiFe‐LDH@MOF: A Novel MOF‐Pillared Layered Double Hydroxide as an Efficient and Reusable Catalyst for the Synthesis of 2‐Amino‐4H‐Chromenes

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NiFe‐LDH@MOF: A Novel MOF‐Pillared Layered Double Hydroxide as an Efficient and Reusable Catalyst for the Synthesis of 2‐Amino‐4H‐Chromenes

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