Method for producing 4-(trifluoromethylsulfonyl)phenol compound

Patent metadata

Field	Value
Publication number	US-10377703-B2
Application number	US-201615737492-A
Country	US
Kind code	B2
Filing date	Jul 19, 2016
Priority date	Jul 21, 2015
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

A compound represented by formula (4):

can be produced by adding a heterogeneous transition metal catalyst to a solution containing a compound represented by formula (3):

obtained by performing a nitration reaction by adding a nitrating agent to a solution containing a compound represented by formula (2):

obtained by oxidizing a compound represented by formula (1):

with hydrogen peroxide in the presence of sodium tungstate and a saturated C8 carboxylic acid, then adding water to the resultant mixture, and separating the resultant solution.

First claim

The invention claimed is:

1. A method for producing a compound represented by formula (2):

by oxidizing a compound represented by formula (1):

with hydrogen peroxide in the presence of sodium tungstate and a saturated C8 carboxylic acid.

2. The method according to claim 1 , wherein the amount of the saturated C8 carboxylic acid used is 0.5 to 2.0 times by weight of the compound (1).

3. A method for producing a compound represented by formula (3):

by oxidizing a compound represented by formula (1):

with hydrogen peroxide in the presence of sodium tungstate and a saturated C8 carboxylic acid, then adding water to the resultant mixture, and separating the resultant solution to obtain a solution containing a compound represented by formula (2):

and by adding a nitrating agent to the solution containing a compound represented by formula (2).

4. The method according to claim 3 , wherein the amount of the saturated C8 carboxylic acid used is 0.5 to 2.0 times by weight of the compound (1).

5. The method according to claim 1 , wherein the saturated C8 carboxylic acid is 2-ethylhexanoic acid.

Assignees

• Sumitomo Chemical Co

Inventors

• Honda Yuta
• Tanaka Yohei
• Ueki Kazuya

Classifications

• C07C209/36

  by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings {in presence of hydrogen-containing gases and a catalyst} · CPC title

• C07C2523/42

  Platinum · CPC title

• C07C315/02 Primary

  by formation of sulfone or sulfoxide groups by oxidation of sulfides, or by formation of sulfone groups by oxidation of sulfoxides · CPC title

• C07C315/04

  by reactions not involving the formation of sulfone or sulfoxide groups · CPC title

• C07C53/128

  the carboxylic group being bound to a carbon atom bound to at least two other carbon atoms, e.g. neo-acids · CPC title