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Method for preparing 1,3-dihydric alcohol directly from olefin

A technology of diols and olefins, which is applied in the field of direct preparation of 1,3-diols from olefins, which can solve the problems of easy deactivation of catalysts, difficulty in separation, and low yield, and achieve the effect of broadening product categories and simple preparation

Active Publication Date: 2013-05-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are problems in the preparation route of 1,3-dihydric alcohol, such as long route, low yield, complex catalyst preparation and difficult separation, and easy deactivation of the catalyst.

Method used

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  • Method for preparing 1,3-dihydric alcohol directly from olefin
  • Method for preparing 1,3-dihydric alcohol directly from olefin
  • Method for preparing 1,3-dihydric alcohol directly from olefin

Examples

Experimental program
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Effect test

Embodiment 1

[0024] In a 250ml Teflon-lined reactor, add 60mmol 38% formaldehyde solution and 90mmol isobutylene respectively, weigh 3g SnO 2 Catalyze the reaction, add 10ml of water, and stir the reaction at 200°C for 10 hours. After the reaction, the product is detected by chromatography, and the mass spectrum of the product and the standard mass spectrum Figure 1 Sincerely. The yield of 3-methyl-1,3-butanediol is shown in Table 1.

Embodiment 2

[0026] In a 250ml Teflon-lined reactor, add 50mmol 38% formaldehyde solution and 90mmol ethylene respectively, and weigh 4g MoO 3 Catalyze the reaction, add 10ml of water, and stir the reaction at 170°C for 24 hours. After the reaction, the product is detected by chromatography, and the mass spectrum of the product and the standard mass spectrum Figure 1 Sincerely. 1,3-propanediol yield is shown in Table 1.

Embodiment 3

[0028] In a 250ml Teflon-lined reactor, add 0.12mol 38% formaldehyde solution and 60mmol ethylene respectively, weigh 5g WO 3 Catalyze the reaction, add 20ml of water, and stir the reaction at 150°C for 36 hours. After the reaction, the product is detected by chromatography, and the mass spectrum of the product is consistent with the standard mass spectrum Figure 1 Sincerely. 1,3-propanediol yield is shown in Table 1.

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Abstract

The invention relates to a method for preparing 1,3-dihydric alcohol directly from olefin. The method employs formaldehyde, olefin and water as reaction substrates to directly prepare 1,3-dihydric alcohol under the effect of an acid catalyst. The process is as follows: mixing formaldehyde, olefin and water with the catalyst; placing the mixture into a pressure vessel for sealing; stirring; and reacting for longer than 2 h at a reaction temperature higher than 80 DEG C. After the reaction, the catalyst is easily separated from the reaction system and can be reused for many times, and yield of 1,3-dihydric alcohol is up to 95%.

Description

technical field [0001] The invention relates to a method for directly preparing 1,3-diols from olefins, in particular to the condensation and hydrolysis of formaldehyde and olefins to prepare 1,3-diols. Background technique [0002] 1,3-diol has important uses in medicine, chemical industry, fuel, etc. It is mainly used as monomer of polyester and polyurethane, solvent, antifreeze or protective agent, etc. It is also an important pharmaceutical intermediate and organic synthesis intermediate. 1,3-propanediol can be used to synthesize paint, it can also synthesize 3-hydroxypropionic acid and malonic acid through air oxidation, and react with urea to synthesize cyclic carbonate. 1,3-Butanediol can be used as the raw material of polyester resin and alkyd resin, it can also be used for the synthesis of plasticizer, and it can also be used as wetting agent and softener. [0003] Methods for the preparation of 1,3-diols have been reported. CN87105645A In acidic medium, in the p...

Claims

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Application Information

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IPC IPC(8): C07B41/02C07C31/20C07C29/38
Inventor 王峰王业红徐杰陈贵夫张晓辰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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