ES399221A1 - Preparation of substituted chromenols - Google Patents

Preparation of substituted chromenols

Info

Publication number
ES399221A1
ES399221A1 ES399221A ES399221A ES399221A1 ES 399221 A1 ES399221 A1 ES 399221A1 ES 399221 A ES399221 A ES 399221A ES 399221 A ES399221 A ES 399221A ES 399221 A1 ES399221 A1 ES 399221A1
Authority
ES
Spain
Prior art keywords
formula
group
preparation
carbon atoms
chromenols
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
ES399221A
Other languages
Spanish (es)
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.)
Beecham Group PLC
Original Assignee
Beecham Group PLC
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 Beecham Group PLC filed Critical Beecham Group PLC
Publication of ES399221A1 publication Critical patent/ES399221A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

A procedure for the preparation of a chromenol of formula (I): ** (See formula) ** or a salt thereof, where R1 is a hydrocarbon group of 1 to 20 carbon atoms, R2 is a six-membered heterocyclic group with a nitrogen atom in position 4, R3 is an alkyl group of 1 to 6 carbon atoms and Y is a hydrogen atom, a salt ion, or an ester or ether forming group; whose procedure is to react a coumarin of formula (II): ** (See formula) ** with an alkyllithium compound of formula R3Li and then, if desired, substituting group Y for other groups Y by known methods. (Machine-translation by Google Translate, not legally binding)
ES399221A 1971-01-28 1972-01-26 Preparation of substituted chromenols Expired ES399221A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB335471 1971-01-28

Publications (1)

Publication Number Publication Date
ES399221A1 true ES399221A1 (en) 1974-11-16

Family

ID=9756735

Family Applications (1)

Application Number Title Priority Date Filing Date
ES399221A Expired ES399221A1 (en) 1971-01-28 1972-01-26 Preparation of substituted chromenols

Country Status (4)

Country Link
CA (1) CA981682A (en)
CH (1) CH577501A5 (en)
ES (1) ES399221A1 (en)
GB (1) GB1340531A (en)

Also Published As

Publication number Publication date
CH577501A5 (en) 1976-07-15
CA981682A (en) 1976-01-13
GB1340531A (en) 1973-12-12

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