Patent ID: 11952357
Assignee: JIANGSU TETRA NEW MATERIAL TECHNOLOGY CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for preparing an epoxide, comprising the steps of:
mixing an unsaturated cycloaliphatic compound containing a double bond, an alkaline salt, and a solvent, and then cooling;
adding an organic acid compound thereto;
dropwise adding a hydrogen peroxide solution thereto to obtain a mixture;
standing the mixture for layering to obtain a lower organic phase 1;
washing the lower organic phase 1 with a mixed washing liquid of an inorganic alkaline solution and a reducing salt solution to obtain a mixed solution;
standing the mixed solution for layering to obtain a lower organic phase 2; and
purifying the lower organic phase 2 to obtain the epoxide,
wherein the organic phase 2 is further washed with an aqueous solution containing:
a small-molecule amine and trehalose, a total amount of the small-molecular amine and trehalose accounts for 15-30 wt % of the aqueous solution, and a weight ratio of the small-molecular amine to trehalose is (3-5):1.