Graphene-supported NiPd alloy nanoparticles: A novel and highly efficient heterogeneous catalyst system for the reductive amination of aldehydes

Article abstract of DOI:10.1016/j.molcata.2015.08.022

A novel and highly efficient heterogeneous catalytic reductive amination of aldehydes is described. The recently developed graphene supported NiPd alloy nanoparticle (G-NiPd) catalyst using ammonia borane (AB) as a green, stable and safe hydrogen donor was used in a water/methanol mixture (v/v = 2/3) under ambient conditions. The catalytic system was successfully applied in the reductive amination of various substituted aldehydes with amines and the corresponding products were obtained in (up to) 99% yield in 6 h. The G-NiPd catalyst could be recycled up to five times without any significant loss in the product yield.

Full text of DOI:10.1016/j.molcata.2015.08.022

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Accepted Manuscript
Title: Graphene-Supported NiPd Alloy Nanoparticles: A
Novel and Highly Efficient Heterogeneous Catalyst System
for the Reductive Amination of Aldehydes
¨
Author: Bilal Nis¸ancı Khadijeh Ganjehyan Onder Metin Arif
´
Dastan Bela To¨ro¨k
PII:
S1381-1169(15)30069-8
DOI:
Reference:
http://dx.doi.org/doi:10.1016/j.molcata.2015.08.022
MOLCAA 9609
To appear in:
Journal of Molecular Catalysis A: Chemical
Received date:
Revised date:
Accepted date:
24-6-2015
25-8-2015
26-8-2015
¨
Please cite this article as: Bilal Nis¸anci, Khadijeh Ganjehyan, Onder Metin, Arif
´
Dastan, Bela Tddotorddotok, Graphene-Supported NiPd Alloy Nanoparticles: A
Novel and Highly Efficient Heterogeneous Catalyst System for the Reductive
Amination of Aldehydes, Journal of Molecular Catalysis A: Chemical
http://dx.doi.org/10.1016/j.molcata.2015.08.022
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Graphene-Supported NiPd Alloy Nanoparticles: A Novel and Highly
Efficient Heterogeneous Catalyst System for the Reductive Amination of
Aldehydes
Bilal Nişancıa,b, Khadijeh Ganjehyana, Önder Metin*,a ometin@atauni.edu.tr Arif Dastana,
,
Béla Török*,b Bela.Torok@umb.edu
aDepartment of Chemistry, Faculty of Science, Atatürk University, 25240 Erzurum, Turkey
bDepartment of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston,
Massachusetts 02125, USA
*Correspondence to: Department of Chemistry, University of Massachusetts Boston, 100 Morrissey
Blvd., Boston, Massachusetts, 02125, USA.. Tel.: (617)-287-6159 (B. Török); Department of
Chemistry, Faculty of Science, Ataturk University, 25240 Erzurum, TURKEY, Tel.: +90 442
2314410, Fax: +90 442 2360948 (Ö. Metin).
1

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Graphical Abstract
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Highlights
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A novel and highly efficient heterogenous catalytic process for the reductive
amination of aldehydes is developed.
Graphene supported Ni30Pd70 alloy nanoparticles (G-Ni30Pd70) were applied as a
catalyst and ammonia borane (AB) as a stable and safe hydrogen reservoir.
The reductive amination of several benzyl amines and various benzaldehyde
derivatives was achieved in good to excellent yields.
The reaction can be performed in a green solvent (water/methanol) with low catalyst
loading at ambient temperature and the catalyst is recyclable.
The catalytic system can be applied in the reaction of chiral compounds and does not cause
any racemization.
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