Salicylic Acid Production Method

Abstract: According to the present method, salicylic acid is produced with high productivity by causing a 2-halogenated benzoic acid to react at 155-300°C in an aqueous solvent in the presence of a copper source and a ligand. Preferably, a refinement step A for putting the obtained salicylic acid in contact with a styrene-based synthetic adsorbent, and/or a refinement step B for putting said salicylic acid in contact with zeolite, is further comprised. Source materials (for example, acetylsalicylic acid) for various pharmaceuticals or intermediates thereof can be derived from the compound of the present invention.

Patent Information

Application #

Filing Date

14 February 2024

Publication Number

10/2024

Publication Type

INA

Invention Field

CHEMICAL

Status

Email

Parent Application

Applicants

API CORPORATION

955, Oaza-Koiwai, Yoshitomi-machi, Chikujo-gun, Fukuoka 8710801

Inventors

1. TANIIKE, Hirotsugu

c/o API Corporation, 955, Oaza-Koiwai, Yoshitomi-machi, Chikujo-gun, Fukuoka 8710801

2. TSUJI, Shunsuke

c/o API Corporation, 955, Oaza-Koiwai, Yoshitomi-machi, Chikujo-gun, Fukuoka 8710801

3. NAGAHAMA, Masaki

c/o API Corporation, 955, Oaza-Koiwai, Yoshitomi-machi, Chikujo-gun, Fukuoka 8710801

4. KOBA, Yurie

c/o API Corporation, 955, Oaza-Koiwai, Yoshitomi-machi, Chikujo-gun, Fukuoka 8710801

Specification

Documents

Application Documents

#	Name	Date
1	202417010181-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [14-02-2024(online)].pdf	2024-02-14
2	202417010181-STATEMENT OF UNDERTAKING (FORM 3) [14-02-2024(online)].pdf	2024-02-14
3	202417010181-POWER OF AUTHORITY [14-02-2024(online)].pdf	2024-02-14
4	202417010181-FORM 1 [14-02-2024(online)].pdf	2024-02-14
5	202417010181-DRAWINGS [14-02-2024(online)].pdf	2024-02-14
6	202417010181-DECLARATION OF INVENTORSHIP (FORM 5) [14-02-2024(online)].pdf	2024-02-14
7	202417010181-COMPLETE SPECIFICATION [14-02-2024(online)].pdf	2024-02-14
8	202417010181-Proof of Right [20-02-2024(online)].pdf	2024-02-20
9	202417010181-FORM 3 [16-05-2024(online)].pdf	2024-05-16
10	202417010181-FORM 18 [05-07-2024(online)].pdf	2024-07-05