Microwave induced catalysis process based on CoO/ZnAl2O4 catalysts, was reported for the two-step transforming eugenol to vanillin. Effects of catalyst load (1%, 4% and 7%) and irradiation time (10 and 15 minutes) at temperature of 120 oC for the efficiency of catalytic oxidation were studied. Results indicated that interaction between microwave irradiation and CoO/ZnAl2O4 catalyst showed much higher catalytic oxidation activity than under reflux heating. Significantly, transforming eugenol to vanillin efficiency reached 67.79% under optimal conditions with microwave power of 400 W, 4% catalyst and reaction time of 15 min. Comparison with one pot catalytic oxidation under reflux heating method using ZnO, CoO, dan ZnAl2O4 catalysts also reported.

1.
A.
Franco
,
S.
De
,
A. M.
Balu
,
A.
Garcia
, and
R.
Luque
,
Beilstein J. Org. Chem.
13
,
1439
1445
(
2017
).
2.
A.
Jha
and
C. V.
Rode
,
New J. Chem.
37
,
2669
2674
(
2013
).
3.
A.
Lu
,
Y.
Chen
,
J.
Jin
,
G.-H.
Yue
, and
D.-L.
Peng
,
J. Power Sources
220
,
391
398
(
2012
).
4.
A. D.
Ballarini
,
S. A.
Bocanegra
,
A. A.
Castro
,
S. R.
de Miguel
, and
O. A.
Scelza
,
Catal. Lett.
129
,
293
302
(
2009
).
5.
A.
Loupy
and
L.
Thach
,
Synth. Commun.
23
,
2571
2577
(
1993
).
6.
G. V.
Salmoria
,
E. L.
Dall’Oglio
, and
C.
Zucco
,
Synth. Commun.
27
,
4335
4340
(
1997
).
7.
P.
García-Albar
,
N.
Lázaro
,
Z. A.
ALOthman
,
A. A.
Romero
,
R.
Luque
, and
A.
Pineda
,
Mol. Catal.
506
,
111537
(
2021
).
8.
B. N.
Shyamala
,
M. M.
Naidu
,
G.
Sulochanamma
, and
P.
Srinivas
,
J. Agric. Food Chem.
55
,
7738
7743
(
2007
).
9.
N. M.
Deraz
,
Int. J. of Nanomaterials, Nanotechnology and Nanomedicine
, (
2018
).
10.
D.
Oleh
and
I. S.
Setyarini
,.
3
4
(
2010
).
11.
P.
Sudarmin
,
Indones J Chem Sci
3
. (
2014
).
12.
E.
Mulyono
,
A.
Suryani
, and
D.
Setyaningsih
,
8
. (
2010
).
13.
M.
Gaba
,
Indian J. Pharm. Res. Educ.
45
,
175
183
(
2011
).
14.
M. D.
Marquez-Medina
,
P.
Prinsen
,
H.
Li
,
K.
Shih
,
A. A.
Romero
, and
R.
Luque
,
ChemSusChem
11
,
389
396
(
2018
).
15.
A.
Franco
,
S.
De
,
A. M.
Balu
,
A. A.
Romero
, and
R.
Luque
,
ChemistrySelect
2
,
9546
9551
(
2017
).
16.
S.
Ostovar
et al,
Front. Chem.
6
, (
2018
).
17.
B.
Rahmanivahid
,
M.
Dios
,
M.
Haghighi
, and
R.
Luque
,
Molecules
24
,
2597
(
2019
).
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