Table 3 Optimizing reaction conditions for oxidation of methyl phenyl sulfide in the presence of Fe3O4@SiO2@A-TT-Pd.

From: In situ decorated pd NPs on Triazin-encapsulated Fe3O4/SiO2-NH2 as magnetic catalyst for the synthesis of diaryl ethers and oxidation of sulfides

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Entry

Catalyst(g)

Solvent

H2O2 (mg)

Time (min)

Yield

1

-

Solvent-free

0.3

12 h

Trace

2

0.005

Solvent-free

0.3

15

60

3

0.07

Solvent-free

0.3

15

84

4

0.01

Solvent-free

0.3

15

98

5

0.02

Solvent-free

0.3

15

98

6

0.01

H2O

0.3

15

50

7

0.01

PEG

0.3

15

49

8

0.01

EtOH

0.3

15

47

9

0.01

DMF

0.3

15

80

10

0.01

Solvent-free

0.2

15

90

11

0.01

Solvent-free

0.4

15

96

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