REZAEI ET AL.
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dried over anhydrous Na2SO4 and solvent was removed
under reduced pressure. The resulting crude product
was obtained in high to excellent yields.
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3.5 | General procedure for oxidative
coupling of thiols to disulfide
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[17] S. Hussain, D. Talukdar, S. K. Bharadwaj, M. K. Chaudhuri,
A reaction flask was charged with thiol (1 mmol), 30%
H2O2 (0.5 ml, 16 mmol) and Fe3O4@S‐ABENZ@VO
(5 mg, 3.7 × 10−3 mol%). Then the mixture was stirred
in CH2Cl2 at room temperature. After completion of the
reaction, the catalyst was separated using an external
magnet, water (15 ml) was added to the reaction mixture
and the product was extracted in organic phase. Finally,
the excess of solvent was removed under reduced pressure
to afford the corresponding pure disulfide.
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4 | CONCLUSIONS
[24] A. Ghorbani‐Choghamarani, B. Ghasemi, Z. Safari, G. Azadi,
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In summary, we have developed an efficient magnetic
nanocatalyst for the selective oxidation of sulfides and oxi-
dative coupling of thiols using H2O2 as oxidant at room
temperature. Attractive features of this method are ease
of operation, high efficiency, low cost, clean reaction with
high yields and relatively short reaction times.
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