Method for producing phenolic compound
US-2017137377-A1 · May 18, 2017 · US
Method for producing perfluoroalkanesulfonyl phenol compounds
US10160722B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10160722-B2 |
| Application number | US-201615575693-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 1, 2016 |
| Priority date | Jun 4, 2015 |
| Publication date | Dec 25, 2018 |
| Grant date | Dec 25, 2018 |
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Abstract
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A compound represented by formula (3): (wherein R 1 represents a C1-C6 perfluoroalkyl group, R 2 represents a C1-C6 alkyl group, and m represents an integer of 0 to 3) or a salt thereof, which is useful as a production intermediate of pharmaceuticals and agrochemicals, can be produced by reacting an alkali metal salt or zinc salt of a C1-C6 perfluoroalkanesulfinic acid with 2-aminophenol optionally substituted by 1 to 3 C1-C6 alkyl groups or a salt thereof in the presence of an oxidizing agent.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a compound represented by formula (3): wherein R 1 represents a C1-C6 perfluoroalkyl group, R 2 represents a C1-C6 alkyl group, and m represents an integer of 0 to 3, or a salt thereof, comprising reacting an alkali metal salt or zinc salt of a C1-C6 perfluoroalkanesulfinic acid with 2-aminophenol optionally substituted by 1 to 3 C1-C6 alkyl groups or a salt thereof in the presence of an oxidizing agent. 2. The method according to claim 1 , wherein the oxidizing agent is one or more oxidizing agents selected from the group consisting of persulfates, peroxides, trivalent iron compounds, divalent copper compounds and manganese compounds. 3. The method according to claim 1 , wherein the oxidizing agent is one or more oxidizing agents selected from the group consisting of potassium persulfate, ammonium persulfate, tert-butyl hydroperoxide, iron(III) chloride, iron(III) oxide, manganese dioxide and copper(II) sulfate. 4. The method according to claim 1 , wherein R 1 is a C1-C3 perfluoroalkyl group. 5. The method according to claim 1 , wherein R 1 is a trifluoromethyl group. 6. The method according to claim 1 , comprising reacting a sodium salt or potassium salt of a C1-C6 perfluoroalkanesulfinic acid. 7. The method according to claim 5 , comprising reacting a sodium salt or potassium salt of trifluoromethanesulfinic acid. 8. The method according to claim 1 , comprising reacting an alkali metal salt or zinc salt of a C1-C6 perfluoroalkanesulfinic acid with 2-aminophenol optionally substituted by 1 to 3 C1-C6 alkyl groups or a salt thereof in the presence of an oxidizing agent, by adding sulfuric acid, methanesulfonic acid or hydrochloric acid.
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Classifications
with the nitrogen atoms of the amino groups bound to hydrogen atoms or to carbon atoms · CPC title
- C07C315/04Primary
by reactions not involving the formation of sulfone or sulfoxide groups · CPC title
by formation of sulfone or sulfoxide groups by oxidation of sulfides, or by formation of sulfone groups by oxidation of sulfoxides · CPC title
- C07C315/00Primary
Preparation of sulfones; Preparation of sulfoxides · CPC title
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- What does patent US10160722B2 cover?
- A compound represented by formula (3): (wherein R 1 represents a C1-C6 perfluoroalkyl group, R 2 represents a C1-C6 alkyl group, and m represents an integer of 0 to 3) or a salt thereof, which is useful as a production intermediate of pharmaceuticals and agrochemical…
- Who is the assignee on this patent?
- Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C07C315/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 25 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).