Method for preparing aliphatic 1, 2-diol through oxidation reaction

By using N-hydroxy compounds as oxidants to react with olefins, combined with segmented heating distillation and recrystallization, the problems of difficult recovery of byproducts, use of highly toxic solvents, and complex processes in the preparation of 1,2-pentanediol in the prior art have been solved, thus achieving efficient and environmentally friendly preparation of 1,2-pentanediol.

CN121609617APending Publication Date: 2026-03-06陕西探微日新化工有限公司
1 Cites 0 Cited by

Patent Information

Application Number
CN202511823486.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-11-24
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing technologies for preparing 1,2-pentanediol suffer from problems such as difficulty in recovering byproducts, equipment corrosion caused by the use of highly toxic solvents and strong alkalis, and complex and costly processes, leading to reliance on imports.

Method used

Using an N-hydroxy compound as an oxidant, 1,2-pentanediol is oxidized with an olefin in an organic solvent in the presence of a hydrogen atom donor compound to produce 1,2-pentanediol. The 1,2-pentanediol is then separated and purified by methods such as fractional heating distillation and recrystallization, avoiding the use of highly corrosive chemicals.

Benefits of technology

The preparation of high-purity 1,2-pentanediol has been achieved, simplifying the process, reducing production costs, and avoiding the generation of saline wastewater, thus demonstrating environmental friendliness and promising industrial applications.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a method for preparing aliphatic 1, 2-diol through oxidation reaction, which comprises the following steps: by taking an N-hydroxy compound as an oxidant, carrying out oxidation reaction on the N-hydroxy compound and alpha-olefin in an organic solvent in the presence of an additive to generate the aliphatic 1, 2-diol. The method has the advantages of mild reaction conditions, high reaction efficiency, easy separation of the oxidant and the additive from the system, simple preparation process, high product selectivity, high product purity, no use of highly toxic or highly corrosive chemicals, avoidance of the generation of salt-containing wastewater, and recovery of the components to participate in the reaction again. And the method also has certain advancement in the field of chemical environmental protection.
Need to check novelty before this filing date? Find Prior Art