GB1398970A - Production of chroman-3-ol and its derivatives by a cyclization process - Google Patents
Production of chroman-3-ol and its derivatives by a cyclization processInfo
- Publication number
- GB1398970A GB1398970A GB1924271A GB1924271A GB1398970A GB 1398970 A GB1398970 A GB 1398970A GB 1924271 A GB1924271 A GB 1924271A GB 1924271 A GB1924271 A GB 1924271A GB 1398970 A GB1398970 A GB 1398970A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ortho
- group
- chroman
- derivatives
- substituents
- 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
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
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
1398970 Chroman-3-ol and derivatives ALBRIGHT & WILSON Ltd 5 June 1972 [7 June 1971] 19242/71 Heading C2C Chroman-3-ol and derivatives thereof are produced by the oxidation of an allyl ether of formula or derivative thereof containing one or more substituents in the aromatic nucleus, with the proviso that there is at least one position ortho to the -OCH 2 -CH=CH 2 group unsubstituted, no substituent causing polymerization and/or degradation of the molecule under the conditions of the oxidation, no substituents resulting in an overall electronic withdrawal from both ortho positions and no sterically hindering group being adjacent to an ortho group when said ortho position is the only unsubstituted ortho position, by reaction with a thallium III salt in a strong acid solution. Exemplified acids are sulphuric, nitric, fluoroboric, perchloric, and trifluoroacetic acids, the thallium III salt preferably having the same anion as the acid employed. Preferable substituents in the aromatic nucleus are one of a halogen atom, or a phenyl, phenoxy, benzyl, benzyloxy, acetyl or acetoxy group, or one or two alkyl or alkoxy groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1924271A GB1398970A (en) | 1971-06-07 | 1971-06-07 | Production of chroman-3-ol and its derivatives by a cyclization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1924271A GB1398970A (en) | 1971-06-07 | 1971-06-07 | Production of chroman-3-ol and its derivatives by a cyclization process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1398970A true GB1398970A (en) | 1975-06-25 |
Family
ID=10126094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1924271A Expired GB1398970A (en) | 1971-06-07 | 1971-06-07 | Production of chroman-3-ol and its derivatives by a cyclization process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1398970A (en) |
-
1971
- 1971-06-07 GB GB1924271A patent/GB1398970A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| IE41528L (en) | Furfuryl-benzomorphane derivatives. | |
| ES411189A1 (en) | Heterocyclic ethers of piperazine n alkanols | |
| GB1441056A (en) | Phenyl-pyridazines their preparation and use as herbicides | |
| ES379880A1 (en) | Procedure for the preparation of a fluoranum compound. (Machine-translation by Google Translate, not legally binding) | |
| GB1359415A (en) | Process for making aryloxy derivatives of aromatic diesters and dinitriles and products derived therefrom | |
| GB1413068A (en) | Bromoergolines | |
| GB1398970A (en) | Production of chroman-3-ol and its derivatives by a cyclization process | |
| GB1391139A (en) | Berbine derivatives and a process for producing the same | |
| ES422465A1 (en) | Preparation of 2-alkylaminoalkyl 6-methyl-7-nitro- 1,2,3,4-tetrahydroquinolines | |
| ES407479A1 (en) | Organic synthetic methods benzylpyrimidine derivatives | |
| GB1329680A (en) | Process for the preparation of carbanilic acid propargyl esters | |
| ES429691A1 (en) | Preparation of p-isobutyl hydratropic acid and intermediates therefor | |
| GB1377224A (en) | Bis-triazole compounds | |
| GB1446701A (en) | Vincamine 2-ketoglutarate and process for the production thereof | |
| GB1325944A (en) | Bisoxalic acid diamides | |
| GB1374281A (en) | Thiazolino-pyrimidin-5-one derivatives process for their pre paration and applications thereof | |
| ES253336A1 (en) | Procedure for the preparation of furan derivatives (Machine-translation by Google Translate, not legally binding) | |
| GB1146183A (en) | Improvements in or relating to nicotinamide derivatives having an analgesic, anti-inflammatory, antipyretic and anti-histaminic action, method for their preparation, andtherapeutical use | |
| ES386553A1 (en) | Papaveroline sulfonic acid monohydrate and salts | |
| GR33415B (en) | METHOD OF PREPARATION OF NEW JOINTS ACQUIRED ANTIBACTERIAL ENERGY. | |
| ES401342A1 (en) | Pyridine derivatives | |
| ES415282A1 (en) | A procedure to prepare new aromatic esters. (Machine-translation by Google Translate, not legally binding) | |
| GB1264944A (en) | ||
| ES286809A1 (en) | Novel benzoxazepine derivatives and a process for the manufacture thereof | |
| ES404115A1 (en) | Novel 1-benzoyloxy-2-lower alkylamino-benzocycloalkane derivatives |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |