Method for preparing sulfoxide and sulfone through water phase oxidation of thioether
A technology of sulfide and sulfoxide, which is applied in the field of preparing sulfoxide and sulfone by water-phase oxidation of sulfide, can solve the problems of harsh reaction conditions, use of organic solvents, long reaction time and the like, and achieves high product yield, mild reaction conditions, The effect of low production cost
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[0033] Example 1 (Preparation of Diethyl Sulfoxide by Catalytic Oxidation of Diethyl Sulfide):
[0034] Add 10wt% diethyl sulfide aqueous solution into the round bottom flask, then add the catalyst (addition amount is 5% of the mass of the diethyl sulfide aqueous solution), and then add H 2 O 2 (Addition amount is 110% of the molar amount of diethyl sulfide), stir and mix uniformly, place in an oil bath, heat to 40°C, and react for 60 minutes. After the reaction, samples were taken for gas phase analysis. The test results are shown in Table 2.
[0035] Table 2 Test results of catalytic oxidation reaction of diethyl sulfide
[0036] Catalyst number
Example Embodiment
[0037] Example 2 (Preparation of ethyl phenyl sulfone by catalytic oxidation reaction of ethyl phenyl sulfide):
[0038] Add 20wt% ethyl phenyl sulfide aqueous solution into the round bottom flask, then add the catalyst (addition amount is 10% of the mass of ethyl phenyl sulfide aqueous solution), and then add H 2 O 2 (Addition amount is 350% of the molar amount of ethyl phenyl sulfide), stir and mix uniformly, place in an oil bath, heat to 35°C, and react for 150 minutes. After the reaction, samples were taken for gas phase analysis. The test results are shown in Table 3.
[0039] Table 3 Test results of catalytic oxidation reaction of ethyl phenyl sulfide
[0040] Catalyst number
Example Embodiment
[0041] Example 3 (Preparation of Diphenyl Sulfoxide by Catalytic Oxidation of Diphenyl Sulfide):
[0042] Add 5wt% diphenyl sulfide aqueous solution to the round bottom flask, then add catalyst (addition amount is 1% of the mass of diphenyl sulfide aqueous solution), and then add H 2 O 2 (Addition amount is 120% of the molar amount of diphenyl sulfide), stir and mix uniformly, place in an oil bath, heat to 35°C, and react for 60 minutes. After the reaction, samples were taken for gas phase analysis. The test results are shown in Table 4.
[0043] Table 4 Test results of catalytic oxidation reaction of diphenyl sulfide
[0044] Catalyst number
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