عنوان
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Reduced graphene oxide/palladium nanoparticle bonded
to N,N’‑bis(2‑aminophenyl)‑1,2‑ethanediamine: a new,
highly efcient and recyclable heterogeneous catalyst
for direct synthesis of 2‑substituted benzimidazoles
via acceptorless dehydrogenative coupling of alcohols
and aromatic diamine
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عنوان مجله
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RESEARCH ON CHEMICAL INTERMEDIATES
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چکیده
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In this paper, the stable synthesis of benzimidazoles catalyzed by reduced graphene
oxide/palladium nanoparticle bonded to N,N’-bis(2-aminophenyl)-1,2-ethanediamine (RGO/N-ligand-Pd(0) nanocomposite) through acceptorless dehydrogenative
coupling (ADC) of 1,2-phenylenediamine and benzyl alcohol is investigated. The
main advantage of this report is the use of RGO/N-ligand-Pd(0) nanocomposite as a
new and highly efcient heterogeneous catalyst for the synthesis of a wide range of
2-substituted benzimidazoles using the benign environmental process ADC, because
in this process valuable by-products of water and hydrogen gas are produced. The
prepared catalyst was identifed using various techniques. The results showed that
the N-ligand-Pd(0) anchored steadily to the GO nanosheets. The current method has
several advantages such as short reaction time, large surface area, and high thermal
stability of the catalyst, the ability to reuse the catalyst several times without signifcant loss of catalytic activity, and the use of benzyl alcohol as a primary material.
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