Method for purifying organic compound and method for producing organic compound

Patent metadata

Field	Value
Publication number	US-12540147-B2
Application number	US-202117998497-A
Country	US
Kind code	B2
Filing date	May 12, 2021
Priority date	May 15, 2020
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

The present invention provides a method for purifying an organic compound, by which an organic compound having a reduced lead content is obtained from an organic compound that contains a lead component as an impurity. In this method for purifying an organic compound, the organic compound that contains a lead component is irradiated with ultraviolet light, and the lead component is subsequently removed from the organic compound. The present invention also provides a method for producing an organic compound, said method comprising purification of the organic compound by means of the above-described method for purifying an organic compound.

First claim

The invention claimed is:

1 . A method for purifying an organic compound, comprising an organic lead component as an impurity,
the method comprising dissolving the organic compound comprising the organic lead component in an organic solvent to form a solution; wherein the organic lead component comprises a lead-carbon bond, and wherein a concentration of the organic lead component in the organic compound before dissolving the organic compound in the organic solvent is within the range of 1 ppb to 1000 ppm on a mass basis; and irradiating the solution with ultraviolet rays thereby cleaving the lead-carbon bond of the organic lead component and thereby forming a second lead component, and removing the second lead component from the solution irradiated with ultraviolet rays.

2 . The method for purifying an organic compound according to claim 1 , wherein the organic compound is an organosilicon compound.

3 . The method for purifying an organic compound according to claim 1 , wherein the solution before being irradiated with the ultraviolet rays has a concentration of the organic compound of 0.01 to 1.0 mass %.

4 . The method for purifying an organic compound according to claim 1 , wherein a wavelength of the ultraviolet rays is 210 to 350 nm.

5 . The method for purifying an organic compound according to claim 1 , wherein a cumulative light intensity of ultraviolet rays with which solution is irradiated is 0.1 to 100 J/cm 2 .

6 . The method for purifying an organic compound according to claim 1 , wherein a molar absorption coefficient of the organic solvent at a wavelength of ultraviolet rays with which the solution is irradiated is 100 L·mol −1 ·cm −1 or less.

7 . The method for purifying an organic compound according to claim 1 , wherein the method for removing a lead component is a method in which the organic compound dissolved in the organic solvent after ultraviolet light irradiation is brought into contact with water, and a water layer is then removed.

8 . The method for purifying an organic compound according to claim 1 , wherein the method for removing a lead component is a method in which the organic compound dissolved in the organic solvent after the ultraviolet light irradiation is brought into contact with an adsorbent.

9 . A method for producing an organic compound, comprising:
synthesizing an organic compound with an organometallic compound, and purifying the synthesized organic compound by the method for purifying an organic compound according to claim 1 .

Assignees

• Tokuyama Corp

Inventors

• Honda Shota
• Nishiyama Takashi
• Isomura Takenori

Classifications

• C07F7/20 Primary

  Purification, separation · CPC title

• C07C31/125

  containing five to twenty-two carbon atoms · CPC title

• C07C29/88

  by treatment giving rise to a chemical modification of at least one compound (chemisorption C07C29/76) · CPC title

• B01J19/123

  Ultraviolet light · CPC title

• C07F7/0827

  Syntheses with formation of a Si-C bond · CPC title