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Preparation method for sulfoxide and sulphone

A sulfoxide and sulfide technology, which is applied in the field of catalyzing sulfide to produce sulfoxide and sulfone, can solve problems such as poor oxidation effect of macromolecular organic substrates, and achieves short reaction time, simple process flow and simple production process. Effect

Inactive Publication Date: 2012-12-26
宁夏富诚生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the molecular sieve is limited by the pore size, the oxidation effect on macromolecular organic substrates is not good.

Method used

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  • Preparation method for sulfoxide and sulphone
  • Preparation method for sulfoxide and sulphone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Mix some TS-1 molecular sieve raw powder with silica sol according to the molecular sieve and silica sol weight ratio of 90:10, and turnip powder is 3%, mix molecular sieve, silica sol and turnip powder evenly; extrude the mixture on a twin-screw extruder Slitting; drying at 120°C for 4 hours in a constant temperature blast drying oven; calcining the catalyst in a muffle furnace, raising the temperature to 550°C for 5 hours, and roasting in a muffle furnace for 3 hours at this temperature to obtain the catalyst.

[0018] Using sulfide anisole and dimethyl sulfide as reaction substrates respectively, according to the molar ratio of sulfide: hydrogen peroxide: acetone is 1:1.0:5, and the space velocity is 25, the target product sulfoxide is prepared.

[0019] Using sulfide anisole and dimethyl sulfide as reaction substrates respectively, the target product sulfone was prepared according to the molar ratio of sulfide: hydrogen peroxide: acetone was 1:2.0:5, and the space ve...

Embodiment 2

[0021] Some Ti-MCM-41 molecular sieve raw powder and silica sol according to the molecular sieve and silica sol weight ratio of 90:10, and the turmeric powder is 3%, and the molecular sieve, silica sol and safflower powder are mixed evenly; the mixture is put on a twin-screw extruder Extrude into strips; dry at 120°C for 4 hours in a constant-temperature blast drying oven; use a muffle furnace to calcine the catalyst, and raise the temperature to 550°C for 5 hours; at this temperature, calcine in a muffle furnace for 3 hours to obtain the catalyst.

[0022] Using sulfide anisole and dimethyl sulfide as reaction substrates respectively, according to the molar ratio of sulfide: hydrogen peroxide: acetone is 1:1.0:5, and the space velocity is 25, the target product sulfoxide is prepared.

[0023] Using sulfide anisole and dimethyl sulfide as reaction substrates respectively, the target product sulfone was prepared according to the molar ratio of sulfide: hydrogen peroxide: acetone...

Embodiment 3

[0025] Put some TS-1 molecular sieve raw powder and silica sol according to the molecular sieve and silica sol weight ratio of 30:70, and the turmeric powder is 3%, mix the molecular sieve, silica sol and safflower powder evenly; extrude the mixture on a twin-screw extruder Slitting; drying at 120°C for 4 hours in a constant temperature blast drying oven; calcining the catalyst in a muffle furnace, raising the temperature to 550°C for 5 hours, and roasting in a muffle furnace for 3 hours at this temperature to obtain the catalyst.

[0026] Using sulfide anisole and dimethyl sulfide as reaction substrates respectively, according to the molar ratio of sulfide: hydrogen peroxide: acetone is 1:1.0:5, and the space velocity is 25, the target product sulfoxide is prepared.

[0027] Using sulfide anisole and dimethyl sulfide as reaction substrates respectively, the target product sulfone was prepared according to the molar ratio of sulfide: hydrogen peroxide: acetone was 1:2.0:5, and ...

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PUM

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Abstract

The invention discloses a preparation method for sulfoxide and sulphone. The preparation method comprises the following steps: conducting contact reaction on thioether and hydrogen peroxide, and catalyst in a fixed bed reactor, wherein the mole ratio of thioether and hydrogen peroxide is 1:0-1.5, the space velocity of the reaction system is 5-100, the reaction temperature ranges from normal temperature to 100 DEG C, the reaction pressure is 0.1-1.0 MPa, and the catalyst is obtained from one or more titaniferous molecular sieve raw powder or formed titaniferous molecular sieve. The method has the advantages of convenient operation, mild reaction conditions, easy separation, high product yield and the like, and the utilization rate of oxidant hydrogen peroxide can be greatly improved.

Description

technical field [0001] The present invention relates to a preparation method of sulfoxide and sulfone, and furthermore relates to a method for catalyzing sulfide to produce sulfoxide and sulfone by using titanium silicon molecular sieve as composition. Background technique [0002] Sulfoxides and sulfones have broad-spectrum biological activities and have broad application prospects in medicine and pesticides. At the same time, sulfoxide and sulfone, as important intermediates in organic synthesis, are widely used in reactions such as synthesis of functional materials and molecular recombination. Direct oxidation of thioethers is one of the main methods for the preparation of sulfoxides and sulfones. In the oxidizing agent of thioether oxidation reaction, H 2 o 2 As a cleaning oxidant has attracted much attention, but H 2 o 2 Especially at low concentrations of H 2 o 2 The shortcoming is that its oxidation ability is moderate, therefore, the main problem of using it a...

Claims

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Application Information

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IPC IPC(8): C07C315/02C07C317/14C07C317/04B01J29/89
Inventor 芮海平陈志伟黄旭光
Owner 宁夏富诚生物科技有限公司
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