[go: up one dir, main page]

GB1271364A - Process for the production of chromones and intermediates therefor - Google Patents

Process for the production of chromones and intermediates therefor

Info

Publication number
GB1271364A
GB1271364A GB40159/68A GB4015968A GB1271364A GB 1271364 A GB1271364 A GB 1271364A GB 40159/68 A GB40159/68 A GB 40159/68A GB 4015968 A GB4015968 A GB 4015968A GB 1271364 A GB1271364 A GB 1271364A
Authority
GB
United Kingdom
Prior art keywords
group
compound
formula
hydrogen
alkoxy
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
GB40159/68A
Inventor
Albert Chambers
Thomas Brian Lee
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.)
Fisons Pharmaceuticals Ltd
Original Assignee
Fisons Pharmaceuticals 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 Pharmaceuticals Ltd filed Critical Fisons Pharmaceuticals Ltd
Priority to GB40159/68A priority Critical patent/GB1271364A/en
Priority to IL32794A priority patent/IL32794A0/en
Priority to CA060,086A priority patent/CA952119A/en
Priority to SE6911624A priority patent/SE372940B/xx
Priority to JP44066047A priority patent/JPS4819313B1/ja
Priority to NL6912820A priority patent/NL6912820A/xx
Priority to CH1282269A priority patent/CH519452A/en
Publication of GB1271364A publication Critical patent/GB1271364A/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
    • C07D311/22—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4
    • C07D311/24—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4 with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyrane Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,271,364. Process for the production of chromones and intermediates thereof. FISONS PHARMACEUTICALS Ltd. 31 July, 1969 [22 Aug., 1968], No. 40159/68. Heading C2C. A process for preparing a compound of formula comprises reacting a compound of formula with a compound of formula R<SP>2</SP>-COCOR<SP>3</SP> in the presence of a condensing agent. In these formulµ P, Q, R and T may be the same or different and each is hydrogen or a substituent other than hydrogen; M is hydrogen, an alkali metal cation or an alkyl group; R<SP>1</SP> is hydrogen or a substituted or unsubstituted alkyl, alkoxy or aryl group; R<SP>2</SP> and R<SP>3</SP> may be the same or different and one is a group reactive with a hydrogen atom in the -COCH 2 R<SP>1</SP> group of compound (II) and the other is an -OH group or a group convertible to an -OH group (except that only one of R<SP>2</SP> and R<SP>3</SP> may be alkoxy and neither of R<SP>2</SP> and R<SP>3</SP> may be halogen); and R<SP>4</SP> is whichever of R<SP>2</SP> and R<SP>3</SP> did not react with the -COCH 2 R<SP>1</SP> group of compound (I). The compounds of Formula I wherein R<SP>4</SP> is a group convertible to an -OH group obtained by the process of invention may be cyclized to chromone compounds of the formula The invention also comprises a compound of Formula I wherein R<SP>4</SP> is other than an alkoxy group.
GB40159/68A 1968-08-22 1968-08-22 Process for the production of chromones and intermediates therefor Expired GB1271364A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB40159/68A GB1271364A (en) 1968-08-22 1968-08-22 Process for the production of chromones and intermediates therefor
IL32794A IL32794A0 (en) 1968-08-22 1969-08-07 Process for the preparation of intermediates for the synthesis of chromones
CA060,086A CA952119A (en) 1968-08-22 1969-08-21 Precursors of chromone derivatives
SE6911624A SE372940B (en) 1968-08-22 1969-08-21
JP44066047A JPS4819313B1 (en) 1968-08-22 1969-08-22
NL6912820A NL6912820A (en) 1968-08-22 1969-08-22
CH1282269A CH519452A (en) 1968-08-22 1969-08-22 Process for the preparation of phenolic compounds and derivatives thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40159/68A GB1271364A (en) 1968-08-22 1968-08-22 Process for the production of chromones and intermediates therefor

Publications (1)

Publication Number Publication Date
GB1271364A true GB1271364A (en) 1972-04-19

Family

ID=10413477

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40159/68A Expired GB1271364A (en) 1968-08-22 1968-08-22 Process for the production of chromones and intermediates therefor

Country Status (7)

Country Link
JP (1) JPS4819313B1 (en)
CA (1) CA952119A (en)
CH (1) CH519452A (en)
GB (1) GB1271364A (en)
IL (1) IL32794A0 (en)
NL (1) NL6912820A (en)
SE (1) SE372940B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52116608A (en) * 1976-03-26 1977-09-30 Tobishima Construct Co Ltd Method that build compartment in building
JPS52118915A (en) * 1976-03-31 1977-10-05 Matsushita Electric Works Ltd Shed wind partition
JPS5499338U (en) * 1977-12-23 1979-07-13
JPS54130708U (en) * 1978-03-03 1979-09-11
JPS5570539U (en) * 1978-11-06 1980-05-15

Also Published As

Publication number Publication date
SE372940B (en) 1975-01-20
IL32794A0 (en) 1969-11-12
NL6912820A (en) 1970-02-24
JPS4819313B1 (en) 1973-06-12
CA952119A (en) 1974-07-30
CH519452A (en) 1972-02-29

Similar Documents

Publication Publication Date Title
GB1133766A (en) Novel acetals and a process for the manufacture and conversion thereof
GB1489394A (en) Halogen-containing metal phthalocyanines and a process for their manufacture
GB1425532A (en) Cyclic mercaptals and a process for the manufacture thereof
GB1261690A (en) N-tritylimidazole
GB1260965A (en) Process for the manufacture of substituted phenols
GB1271364A (en) Process for the production of chromones and intermediates therefor
GB1232265A (en)
FR2197849B1 (en)
GB1130956A (en) Substituted pteridines and pharmaceutical compositions containing them
GB1226250A (en)
GB1368568A (en) 3,5-dialkyl-4-hydroxyphenyl alkanoic acid ester of 2,4,6-tris hydroxyethylamino of derivatives of triazine
GB1231411A (en)
GB1259081A (en)
ES407479A1 (en) Organic synthetic methods benzylpyrimidine derivatives
GB1369386A (en) Glycidyl-urethane compounds processes for their manufacture and their use
GB1212466A (en) Hydroxyarylalkyldiethers and a method for the manufacture thereof
GB1421554A (en) Process for the stereoselective production of intermediates in the synthesis of pgea and derivatives
GB1422444A (en) 10-substituted-benzocycloheptathiophenone derivatives
GB1350326A (en) Distyrylbenzene derivatives
GB1367866A (en) Process for the preparation of tricyclic compounds
GB1240780A (en) Phosphoroamidothioate esters having herbicidal activity
GB1481549A (en) Antimicrobial dihalonitromethyl heterocyclic compounds
GB1305025A (en)
GB1352089A (en) Bis-styryltriazoles their use for the optical brightening of organic materials and processes for their manufacture
GB1325944A (en) Bisoxalic acid diamides