BE790792A - Nouveaux derives de chromone aldehyde et leur procede de fabrication - Google Patents

Nouveaux derives de chromone aldehyde et leur procede de fabrication

Info

Publication number
BE790792A
BE790792A BE790792DA BE790792A BE 790792 A BE790792 A BE 790792A BE 790792D A BE790792D A BE 790792DA BE 790792 A BE790792 A BE 790792A
Authority
BE
Belgium
Prior art keywords
manufacturing process
aldehyde derivatives
chromone aldehyde
new chromone
new
Prior art date
Application number
Other languages
English (en)
Original Assignee
Takeda Chemical Industries 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.)
Publication date
Priority claimed from JP46087880A external-priority patent/JPS50675B2/ja
Priority claimed from JP169872A external-priority patent/JPS4932860B2/ja
Publication of BE790792A publication Critical patent/BE790792A/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/22—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
BE790792D 1971-11-04 Nouveaux derives de chromone aldehyde et leur procede de fabrication BE790792A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP46087880A JPS50675B2 (fr) 1971-11-04 1971-11-04
JP169872A JPS4932860B2 (fr) 1971-12-27 1971-12-27

Publications (1)

Publication Number Publication Date
BE790792A true BE790792A (fr) 1973-02-15

Family

ID=26334970

Family Applications (1)

Application Number Title Priority Date Filing Date
BE790792D BE790792A (fr) 1971-11-04 Nouveaux derives de chromone aldehyde et leur procede de fabrication

Country Status (5)

Country Link
BE (1) BE790792A (fr)
CA (1) CA994788A (fr)
CH (1) CH576462A5 (fr)
FR (1) FR2158467B1 (fr)
GB (1) GB1407479A (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE769146A (fr) * 1970-07-01 1971-11-03 Takeda Chemical Industries Ltd Derives d'acides chromone-carboxylique

Also Published As

Publication number Publication date
CA994788A (en) 1976-08-10
FR2158467A1 (fr) 1973-06-15
FR2158467B1 (fr) 1975-10-31
GB1407479A (en) 1975-09-24
CH576462A5 (fr) 1976-06-15

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: TAKEDA CHEMICAL INDUSTRIES LTD

Effective date: 19901031