FR74005E - Process for preparing coumarin derivatives with biological effect - Google Patents

Process for preparing coumarin derivatives with biological effect

Info

Publication number
FR74005E
FR74005E FR49990A FR74005DA FR74005E FR 74005 E FR74005 E FR 74005E FR 49990 A FR49990 A FR 49990A FR 74005D A FR74005D A FR 74005DA FR 74005 E FR74005 E FR 74005E
Authority
FR
France
Prior art keywords
biological effect
coumarin derivatives
acetone
preparing coumarin
hydroxycoumarin
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.)
Expired
Application number
FR49990A
Other languages
French (fr)
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.)
SPOFA USINES PHARMA REUNIES
Original Assignee
SPOFA USINES PHARMA REUNIES
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 SPOFA USINES PHARMA REUNIES filed Critical SPOFA USINES PHARMA REUNIES
Application granted granted Critical
Publication of FR74005E publication Critical patent/FR74005E/en
Expired legal-status Critical Current

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
    • C07D311/42—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4
    • C07D311/44—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3
    • C07D311/46—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3 unsubstituted in the carbocyclic ring
    • C07D311/48—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3 unsubstituted in the carbocyclic ring with two such benzopyran radicals linked together by a carbon chain

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Pyrane Compounds (AREA)

Abstract

3,31 - Bis - 4 - hydroxycoumarinyl - acetone is prepared by condensing 4-hydroxycoumarin with an asymmetric dihaloacetone, e.g. dichloro-or dibromo-acetone. Examples are given in which the condensation takes place by refluxing dichloro- or dibromo-acetone with an aqueous suspension of 4-hydroxycoumarin which has been neutralized to Methyl Red by means of caustic potash. Specification 672,357 is referred to.
FR49990A 1950-11-13 1951-11-09 Process for preparing coumarin derivatives with biological effect Expired FR74005E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS305343X 1950-11-13
CH280975T 1951-10-31

Publications (1)

Publication Number Publication Date
FR74005E true FR74005E (en) 1961-03-08

Family

ID=25732045

Family Applications (1)

Application Number Title Priority Date Filing Date
FR49990A Expired FR74005E (en) 1950-11-13 1951-11-09 Process for preparing coumarin derivatives with biological effect

Country Status (4)

Country Link
BE (1) BE507034A (en)
CH (1) CH305343A (en)
FR (1) FR74005E (en)
GB (1) GB707668A (en)

Also Published As

Publication number Publication date
BE507034A (en)
CH305343A (en) 1955-02-15
GB707668A (en) 1954-04-21

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