JPS5616445A - Novel derivative of terephthalic acid and its preparation - Google Patents

Novel derivative of terephthalic acid and its preparation

Info

Publication number
JPS5616445A
JPS5616445A JP9031479A JP9031479A JPS5616445A JP S5616445 A JPS5616445 A JP S5616445A JP 9031479 A JP9031479 A JP 9031479A JP 9031479 A JP9031479 A JP 9031479A JP S5616445 A JPS5616445 A JP S5616445A
Authority
JP
Japan
Prior art keywords
methoxy
preparation
acid
formula
ester
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9031479A
Other languages
Japanese (ja)
Other versions
JPS623830B2 (en
Inventor
Norio Akimoto
Katsuaki Tsuzuki
Hiroyuki Yamane
Shigeru Iwakiri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP9031479A priority Critical patent/JPS5616445A/en
Publication of JPS5616445A publication Critical patent/JPS5616445A/en
Publication of JPS623830B2 publication Critical patent/JPS623830B2/ja
Granted legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

NEW MATERIAL:A 2-methoxy-5-haloterephthalic acid-4-alkyl ester of formula I (R is lower alkyl; X is halogen).
EXAMPLE: 2-Methoxy-5-chloroterephthalic acid-4-methyl ester.
USE: An intermediate for the preparation of pharmaceuticals. Usable for the preparation of 2-methoxy-4-amino-5-chloro-N-(tertiary aminoethyl)benzamide etc. of the pharmaceuticals having pharmacological actions, e.g. analgesic, sedative, neuroleptic and mental hypotonic actions.
PROCESS: The compound of formula I is obtained by the selective hydrolysis of the carboxylic acid ester at the 1-position of a 2-methoxy-5-haloterephthalic acid-1,4- dialkyl ester of formula II (R'is alkyl) in water or a solvent, e.g. a lower alcohol, in the presence of a base (e.g. NaOH or KOH).
COPYRIGHT: (C)1981,JPO&Japio
JP9031479A 1979-07-18 1979-07-18 Novel derivative of terephthalic acid and its preparation Granted JPS5616445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9031479A JPS5616445A (en) 1979-07-18 1979-07-18 Novel derivative of terephthalic acid and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9031479A JPS5616445A (en) 1979-07-18 1979-07-18 Novel derivative of terephthalic acid and its preparation

Publications (2)

Publication Number Publication Date
JPS5616445A true JPS5616445A (en) 1981-02-17
JPS623830B2 JPS623830B2 (en) 1987-01-27

Family

ID=13995059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9031479A Granted JPS5616445A (en) 1979-07-18 1979-07-18 Novel derivative of terephthalic acid and its preparation

Country Status (1)

Country Link
JP (1) JPS5616445A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102173885B1 (en) * 2020-03-04 2020-11-04 이원익 Device working cold medium pipe for aircondisioner scondensers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEM PHARM BULL *

Also Published As

Publication number Publication date
JPS623830B2 (en) 1987-01-27

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