GB882537A - Chromones and processes for the preparation thereof - Google Patents
Chromones and processes for the preparation thereofInfo
- Publication number
- GB882537A GB882537A GB31111/59A GB3111159A GB882537A GB 882537 A GB882537 A GB 882537A GB 31111/59 A GB31111/59 A GB 31111/59A GB 3111159 A GB3111159 A GB 3111159A GB 882537 A GB882537 A GB 882537A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- concentrating
- residue
- alkyl
- under vacuum
- 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
Abstract
The invention comprises compounds of general formula <FORM:0882537/IV (b)/1> in which <FORM:0882537/IV (b)/2> R2 is alkyl or phenyl; and R3 is alkyl; and the preparation thereof by condensing a substituted 8-chloromethyl-7-methoxychromone in a solvent with a secondary amine in the molar ratio 1 : 2 under reflux boiling or in an autoclave, cooling and filtering the reaction mixture and concentrating it until dry under vacuum, taking up the residue in water and extracting the undissolved portion by means of a solvent, washing the extract with a saturated solution of sodium chloride and drying it over anhydrous sodium sulphate, mixing the washed and dried extract with an excess of alcoholic hydrochloric acid, concentrating it until dry under vacuum and recrystallising the residue from a solvent. Detailed examples are given. The compounds have a stimulating effect upon the central nervous system.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH882537X | 1958-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB882537A true GB882537A (en) | 1961-11-15 |
Family
ID=4544957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31111/59A Expired GB882537A (en) | 1958-09-12 | 1959-09-11 | Chromones and processes for the preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB882537A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0137193A2 (en) * | 1983-08-12 | 1985-04-17 | Hoechst Aktiengesellschaft | Chromane alkaloid, process for its isolation from Dysoxylum binectariferum, and its use as a medicament |
| CN110240585A (en) * | 2019-06-10 | 2019-09-17 | 上海诗丹德标准技术服务有限公司 | A kind of preparation method of agalloch eaglewood tetrol |
-
1959
- 1959-09-11 GB GB31111/59A patent/GB882537A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0137193A2 (en) * | 1983-08-12 | 1985-04-17 | Hoechst Aktiengesellschaft | Chromane alkaloid, process for its isolation from Dysoxylum binectariferum, and its use as a medicament |
| EP0137193A3 (en) * | 1983-08-12 | 1987-02-04 | Hoechst Aktiengesellschaft | Chromane alkaloid, process for its isolation from dysoxylum binectariferum, and its use as a medicament |
| CN110240585A (en) * | 2019-06-10 | 2019-09-17 | 上海诗丹德标准技术服务有限公司 | A kind of preparation method of agalloch eaglewood tetrol |
| CN110240585B (en) * | 2019-06-10 | 2023-08-22 | 上海诗丹德标准技术服务有限公司 | Preparation method of agilawood tetraol |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Weisblat et al. | The Cleavage of Sulfonamides1 | |
| Lewin et al. | 1, 5-hydrogen transfer during diazonium ion decomposition—IV: The copper catalyzed reaction. A Case of hydrogen atom or hydride ion transfer in the same system | |
| SU417936A3 (en) | ||
| GB882537A (en) | Chromones and processes for the preparation thereof | |
| Veer et al. | Note on the reaction between pyridine and benzyl magnesium chloride | |
| GB1055184A (en) | A process for the manufacture of 2-styryl-oxazole compounds | |
| GB852604A (en) | New anthraquinone dyestuffs | |
| Paquette | Dihydroazepinone Chemistry. III. The Base-Catalyzed Deuterium Exchange of 1, 3-Dihydro-1, 3, 5, 7-tetramethyl-2H-azepin-2-one1 | |
| SU72463A2 (en) | Method for producing apomorphine | |
| SU126227A1 (en) | Method of isomerization of 3-methyl-3-ol-4-in-penta-en 1 to 3-methylpent-en-2-yn-4-ol-1 using ion exchange resins | |
| SU70499A1 (en) | The method of producing sulfanylguanidine | |
| SU133872A1 (en) | The method of obtaining the Quaternary ammonium salts | |
| GB899386A (en) | d-2-phenyl-3-methyltetrahydro-1,4-oxazine and a method of manufacturing same | |
| SU129814A1 (en) | The method of obtaining diphenylolpropane | |
| SU398547A1 (en) | METHOD OF OBTAINING DERIVATIVES OF 5H, 2,3,6,7-TETRAHYDROIMIDAZO | |
| GB1062877A (en) | Improvements in and relating to the preparation of substituted carbinols | |
| GB998525A (en) | Process for the preparation of aldehydes and ketones | |
| SU126885A1 (en) | The method of obtaining the sodium salt of 8-mercaptoquinoline (thioxin) | |
| Cook et al. | Isolation of acetic acid from mammalian liver | |
| Grinev et al. | Synthesis of alkylamine derivatives of 1-aryl-5-hydroxyindole | |
| JPS5547652A (en) | Production of substituted sulfondiimine | |
| GB847016A (en) | Improvements in or relating to a process for the preparation of and compositions comprising methyl mercuric nitrile | |
| GB982572A (en) | Improvements in and relating to quaternary ammonium compounds and the preparation thereof | |
| GR27795B (en) | METHOD FOR THE PREPARATION OF NEW HETEROCYCLIC COMPOUNDS. | |
| ES270975A3 (en) | Procedure for obtaining a mixture of polybromed salicilanylides (Machine-translation by Google Translate, not legally binding) |