JPS5759883A - Production of chromone-3-carboxylic acid - Google Patents

Production of chromone-3-carboxylic acid

Info

Publication number
JPS5759883A
JPS5759883A JP13530180A JP13530180A JPS5759883A JP S5759883 A JPS5759883 A JP S5759883A JP 13530180 A JP13530180 A JP 13530180A JP 13530180 A JP13530180 A JP 13530180A JP S5759883 A JPS5759883 A JP S5759883A
Authority
JP
Japan
Prior art keywords
chromone
carboxylic acid
compound
halogenosuccinimide
production
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.)
Pending
Application number
JP13530180A
Other languages
Japanese (ja)
Inventor
Yoshimasa Machida
Seiichiro Nomoto
Shigeto Negi
Hironori Ikuta
Isao Saito
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.)
Eisai Co Ltd
Original Assignee
Eisai 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 Eisai Co Ltd filed Critical Eisai Co Ltd
Priority to JP13530180A priority Critical patent/JPS5759883A/en
Publication of JPS5759883A publication Critical patent/JPS5759883A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: The reaction between a chromone-3-carboxyldehyde and an N-halogenosuccinimide is followed by the hydrolysis of the product to produce the titled compound used as an antiallergic without difficulty in waste water disposition.
CONSTITUTION: The reaction between a compound of formulaI(R is H, monovalent substituent; n is 1, 2) and an N-halogenosuccinimide is effected in a solvent such as dichloromethane under irradiation with light at 40W100°C. Then, the product is hydrolyzed with water to give chromone-3-carboxylic acid of formula II. The compound of formula II also is used as a synthetic intermediate of an antibiotic. The waste water from the process can be satisfactorily disposed by a usual method such as the activated sludge process.
COPYRIGHT: (C)1982,JPO&Japio
JP13530180A 1980-09-30 1980-09-30 Production of chromone-3-carboxylic acid Pending JPS5759883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13530180A JPS5759883A (en) 1980-09-30 1980-09-30 Production of chromone-3-carboxylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13530180A JPS5759883A (en) 1980-09-30 1980-09-30 Production of chromone-3-carboxylic acid

Publications (1)

Publication Number Publication Date
JPS5759883A true JPS5759883A (en) 1982-04-10

Family

ID=15148500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13530180A Pending JPS5759883A (en) 1980-09-30 1980-09-30 Production of chromone-3-carboxylic acid

Country Status (1)

Country Link
JP (1) JPS5759883A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513145A (en) * 1982-12-28 1985-04-23 Eisai Co., Ltd. 2-Methylchromone derivatives and process for their preparation
US4628107A (en) * 1983-03-25 1986-12-09 Bayer Aktiengesellschaft Intermediate 8-carboxaldehyde-(-chromone and -thiochromone) derivatives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513145A (en) * 1982-12-28 1985-04-23 Eisai Co., Ltd. 2-Methylchromone derivatives and process for their preparation
US4628107A (en) * 1983-03-25 1986-12-09 Bayer Aktiengesellschaft Intermediate 8-carboxaldehyde-(-chromone and -thiochromone) derivatives

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