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New Journal of Chemistry
Page 6 of 8
DOI: 10.1039/C8NJ02685H
ARTICLE
Journal Name
Me
Y
References:
HY + R-ZAc
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O
a
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CuFe2O4 MNP'S
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Fig 9: Proposed mechanism for acetylation of alcohols,
phenols, aniline
.
Table 4: Comparison efficiency of CuFe2O4 MNPs with some
reported catalysts for the acetylation reactions of aniline:
Entry
Reaction
Conditions
Time
(min)
Catalyst
(mol %)
Yield
(%)
Ref
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1
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HClO4–SiO2
Zeolite H-FER
BiFeO3
15
120
5
1mol
80
99
98
44
45
43
150 mg
100 mg
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4
EtOAc
20 h
0.1 M
(70°C)
16
21
5
6
RHA/TiO2
9
20 mol
2 mol
93
96
23
30
Fe3O4@PDA-
SO3H
30
7
8
Zinc Acetate
(Microwave)
20
5
0.045
mmol
91
46
CuFe2O4MNPs
r.t.
2 mol
98a
This
Work
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aReaction conditions: aniline (1 mmol), CuFe2O4 MNPs (0.0107
mmol) in acetic anhydride (2 mmol)at room temperature.
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5. Conclusion:
In the investigation, we have synthesized biogenic CuFe2O4 MNPs
using Camellia sinensis var. Assamica (Tea) for the first time.
Moreover, we have shown the catalytic applicability of the
synthesized nanoparticles for the acetylation of various alcohols,
phenols, and amines at room temperature under solvent free
conditions with excellent yields. The reaction proceeded within a
very short reaction time and the products obtained also gave good
to excellent yields. Recyclability up to 4 times is one more
advantage of the prepared catalyst. The easy preparation, biogenic
synthesis of the catalyst, no harsh reaction conditions are the
advantages of this protocol.
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Acknowledgements
BC gratefully acknowledges DST-SERB (project No.SB/FT/CS-
161/2012) and UGC-SAP for financial assistance, and SAIF, NEHU
Shillong, CSIC Dibrugarh University for spectral data.
6 | J. Name., 2012, 00, 1-3
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