Method for preparing sulfoxide through catalytic oxidation
A technology of catalytic oxidation and sulfoxide, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of low production cost, achieve low production cost, high yield and purity, and easy operation
Active Publication Date: 2014-05-21
徐州博创建设发展集团有限公司
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Problems solved by technology
[0005] The technical problem to be solved in the present invention is to apply a composite metal oxide catalyst to the selective oxidation of sulfide to prepare sulfoxide. The preparation method has the advantages of simple process, good reaction efficiency and selectivity, little environmental pollution and safe production High, low production cost, suitable for industrial production
Method used
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Embodiment 1
[0028] 5 grams of tungsten oxide, 5 grams of molybdenum oxide, and 10 grams of 4A molecular sieve were thoroughly ground and mixed, then calcined at 500° C. for 1 hour, and naturally cooled to obtain a honeycomb composite catalyst for later use.
Embodiment 2
[0030] 5 grams of tungsten oxide and 10 grams of 4A molecular sieve were thoroughly ground and mixed, then calcined at 500° C. for 1 hour, and cooled naturally to obtain a powdered composite catalyst for later use.
Embodiment 3
[0032] 5 grams of iron oxide, 10 grams of molybdenum oxide, and 20 grams of silicon dioxide were thoroughly ground and mixed, then calcined at 600° C. for 2 hours, and naturally cooled to obtain a honeycomb composite catalyst for later use.
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The invention discloses a method for preparing sulfoxide, which is represented by a formula (II), through catalytic oxidation. The method comprises steps that: thioether represented by a formula (I) is adopted as a raw material, hydrogen peroxide is adopted as an oxidizing agent, and sulfoxide is prepared through catalytic oxidation of thioether under an effect of a composite metal oxide catalyst. The composite metal oxide catalyst is obtained through steps that: a metal oxide or a mixture of a metal oxide and an auxiliary agent is roasted for 0.5 to 3 hours under a high temperature of 450 to 800 DEG C, such that the composite metal oxide catalyst is obtained. The method provided by the invention has advantages of simple technology, good reaction efficiency and selectivity, low pollution to environment, high production security, low production cost, and suitability for industrialized productions.
Description
(1) Technical field [0001] The invention relates to a method for preparing sulfoxide by catalytic oxidation. (2) Background technology [0002] The sulfoxide compounds of thioether oxidation products have broad-spectrum biological activities, such as insecticide, sterilization, weeding, anti-tumor, anti-virus, and anti-rash. Different sulfoxide structures introduce different groups and have different biological activities. At the same time, sulfoxide, as an important intermediate in fine chemicals and other organic synthesis, is also widely used in C-C bond formation and molecular reorganization reactions. Therefore, the synthesis of sulfoxide compounds has received increasing attention from chemists. [0003] It is a difficult problem to quantitatively oxidize sulfide to sulfoxide without generating sulfone. The key to the problem lies in choosing a suitable oxidant and its oxidation system. Hydrogen peroxide is an environmentally friendly and cheap oxidant widely used to oxidi...
Claims
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IPC IPC(8): C07C315/02C07C317/14C07C317/04
Inventor 裴文郭罕奇杨培凤吴磊王维胡建涛卞国清杨雪娇
Owner 徐州博创建设发展集团有限公司