S. M. Sadeghzadeh
tailoring chemical and physical properties like size, shape,
composition and morphology. As a result, FeNi3/SiO2/Salen/
Ru MNP was used in the subsequent investigations because
of its high reactivity, high selectivity and easy separation by
using the magnetic properties of FeNi3.
4 Conclusion
In summary, FeNi3/SiO2/Salen/Ru MNP as a new magnetic
nanoparticles catalyst was synthesized directly through
reaction of Ru(DMSO)4Cl2 and 4-methylpyridine com-
plex supported on FeNi3/SiO2/SalenMNP. The synthesized
FeNi3/SiO2/Salen/Ru MNP was used as a magnetically
recyclable heterogeneous catalyst for the efficient one-pot
synthesis of Heck and Suzuki coupling reactions with high
product yields. The catalytic research on novel approaches
toward nanomaterials should be improved to enhance
organic synthesis. For that purpose, nanoparticles catalyst
provides a new way for continuous processes, because of
its simple recyclability. From a scientific point, our results
expand the application of nanoparticles. This catalyst
should be helpful to development of new catalytic systems.
Then, the reaction of a various types of iodo-, bromo-,
and chloroaryl derivatives with styrene in the presence
FeNi3/SiO2/Salen/Ru MNP (0.1 mg) and K2CO3 at 70°C in
water as solvent was investigated. The results of this study
are collected in Table 4. To demonstrate the scope of the
catalyst system, aryl halides including chlorides, bromides
and iodides with various substitutions were cross coupled
with styrene ethyl and methyl acrylates to give good to high
yields of the products irrespective of the nature of substitu-
ents like nitro, and methoxy groups.
Following this initial success in the Suzuki cross-cou-
pling reaction, we investigated the application of FeNi3/
SiO2/Salen/Ru MNP in the Suzuki reaction. As shown in
Table 5, various aryl iodides, bromides and chlorides con-
taining electron-donating and electron-withdrawing groups
underwent the cross-coupling reaction with phenylboronic
acid to produce the corresponding products in good to high
yields.
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