FI893074A - - Google Patents

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Publication number
FI893074A
FI893074A FI893074A FI893074A FI893074A FI 893074 A FI893074 A FI 893074A FI 893074 A FI893074 A FI 893074A FI 893074 A FI893074 A FI 893074A FI 893074 A FI893074 A FI 893074A
Authority
FI
Finland
Prior art keywords
carboxyl
group
salt
converted
formula
Prior art date
Application number
FI893074A
Other languages
Finnish (fi)
Other versions
FI893074A0 (en
FI85703B (en
FI85703C (en
Inventor
Yozo Todo
Tetsuo Yamafuji
Katsuyuki Nagumo
Isao Kitayama
Hideyoshi Nagaki
Shinagawa Mikako Miyajima
Original Assignee
Toyama Chemical 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
Priority claimed from JP60009191A external-priority patent/JPH0629247B2/en
Priority claimed from JP60028397A external-priority patent/JPH0629246B2/en
Priority claimed from JP60043644A external-priority patent/JPH0665670B2/en
Priority claimed from JP60069061A external-priority patent/JPH0665671B2/en
Priority claimed from JP60097065A external-priority patent/JPH0662619B2/en
Priority claimed from JP60129323A external-priority patent/JPH0665672B2/en
Priority claimed from FI860250A external-priority patent/FI83313C/en
Publication of FI893074A publication Critical patent/FI893074A/fi
Publication of FI893074A0 publication Critical patent/FI893074A0/en
Application filed by Toyama Chemical Co Ltd filed Critical Toyama Chemical Co Ltd
Publication of FI85703B publication Critical patent/FI85703B/en
Publication of FI85703C publication Critical patent/FI85703C/en
Application granted granted Critical

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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Landscapes

  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention relates to a method for manufacture of 1,4- dihydro-4-oxonaphthyridine derivatives with the formula I, in which R1 is a hydrogen atom or a carboxyl- protecting group, X is a hydrogen atom or a fluorine atom and Y is a halogen atom, by which a compound with the formula II, in which R1a is a carboxyl-protecting group, R2b is a hydroxyl group or a possibly substituted alkoxy, alkanesulphonyl, arenesulphonyl, alkanesulphonyloxy, arenesulphonyloxy, dialkoxyphosphinyloxy or diaryloxyphosphinyloxy group and X has the aforesaid meaning, or a salt thereof, is converted with a Vilsmeier reagent, which is derived from N,N-disubstituted formamide, and, if necessary, the carboxyl protection group is removed or the product is converted to a salt or an ester. <IMAGE>
FI893074A 1985-01-23 1989-06-22 FOERFARANDE FOER FRAMSTAELLNING AV 1,4 -DIHYDRO-4-OXONAFTYRIDINDERIVAT. FI85703C (en)

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
JP919185 1985-01-23
JP60009191A JPH0629247B2 (en) 1985-01-23 1985-01-23 5-fluoronicotinic acid derivative and its salt
JP2839785 1985-02-18
JP60028397A JPH0629246B2 (en) 1985-02-18 1985-02-18 2- (5-fluoronicotinoyl) acetic acid derivative and its salt
JP60043644A JPH0665670B2 (en) 1985-03-07 1985-03-07 1,4-Dihydro-4-oxonaphthyridine derivatives and salts thereof
JP4364485 1985-03-07
JP6906185 1985-04-03
JP60069061A JPH0665671B2 (en) 1985-04-03 1985-04-03 Novel process for producing 1-substituted aryl-1,4-dihydro-4-oxonaphthyridine derivative or salt thereof
JP60097065A JPH0662619B2 (en) 1985-05-08 1985-05-08 Novel process for producing 1,4-dihydro-4-oxonaphthyridine derivative or salt thereof
JP9706585 1985-05-08
JP60129323A JPH0665672B2 (en) 1985-06-14 1985-06-14 Novel process for producing 1,4-dihydro-4-oxonaphthyridine derivative or salt thereof
JP12932385 1985-06-14
FI860250A FI83313C (en) 1985-01-23 1986-01-20 New process for the preparation of 1- (substituted aryl) -1,4-dihydro-4-oxo-1,8-naphthyridine derivatives and intermediates useful in the process
FI860250 1986-01-20

Publications (4)

Publication Number Publication Date
FI893074A0 FI893074A0 (en) 1989-06-22
FI893074A true FI893074A (en) 1989-06-22
FI85703B FI85703B (en) 1992-02-14
FI85703C FI85703C (en) 1992-05-25

Family

ID=27562235

Family Applications (1)

Application Number Title Priority Date Filing Date
FI893074A FI85703C (en) 1985-01-23 1989-06-22 FOERFARANDE FOER FRAMSTAELLNING AV 1,4 -DIHYDRO-4-OXONAFTYRIDINDERIVAT.

Country Status (1)

Country Link
FI (1) FI85703C (en)

Also Published As

Publication number Publication date
FI893074A0 (en) 1989-06-22
FI85703B (en) 1992-02-14
FI85703C (en) 1992-05-25

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Legal Events

Date Code Title Description
FG Patent granted

Owner name: TOYAMA CHEMICAL CO., LTD.

MA Patent expired