CH550784A - METHOD FOR PREPARING BENZOPYRANNIC DERIVATIVES. - Google Patents

METHOD FOR PREPARING BENZOPYRANNIC DERIVATIVES.

Info

Publication number
CH550784A
CH550784A CH1912771A CH1912771A CH550784A CH 550784 A CH550784 A CH 550784A CH 1912771 A CH1912771 A CH 1912771A CH 1912771 A CH1912771 A CH 1912771A CH 550784 A CH550784 A CH 550784A
Authority
CH
Switzerland
Prior art keywords
benzopyrannic
derivatives
preparing
preparing benzopyrannic
benzopyrannic derivatives
Prior art date
Application number
CH1912771A
Other languages
French (fr)
Original Assignee
Fisons 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 Fisons Ltd filed Critical Fisons Ltd
Publication of CH550784A publication Critical patent/CH550784A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
    • C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
    • C07D493/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/54—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of compounds containing doubly bound oxygen atoms, e.g. esters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicinal Preparation (AREA)
CH1912771A 1970-12-30 1971-12-29 METHOD FOR PREPARING BENZOPYRANNIC DERIVATIVES. CH550784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6191570 1970-12-30

Publications (1)

Publication Number Publication Date
CH550784A true CH550784A (en) 1974-06-28

Family

ID=10487627

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1912771A CH550784A (en) 1970-12-30 1971-12-29 METHOD FOR PREPARING BENZOPYRANNIC DERIVATIVES.

Country Status (7)

Country Link
CA (1) CA964271A (en)
CH (1) CH550784A (en)
DE (1) DE2163869A1 (en)
FR (1) FR2120095B1 (en)
GB (1) GB1321879A (en)
IL (1) IL38310A (en)
NL (1) NL7118101A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449810A (en) * 1972-12-05 1976-09-15 Fisons Ltd Benzo-or naphtho-dipyran-di-n-tetrazolyl- -carboxamide derivative methods for their production and compositions containing them

Also Published As

Publication number Publication date
GB1321879A (en) 1973-07-04
NL7118101A (en) 1972-07-04
IL38310A0 (en) 1972-02-29
FR2120095B1 (en) 1975-06-13
IL38310A (en) 1975-06-25
CA964271A (en) 1975-03-11
DE2163869A1 (en) 1972-07-20
FR2120095A1 (en) 1972-08-11

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Legal Events

Date Code Title Description
PL Patent ceased