DE2502690C2 - Verfahren zur Gewinnung von Cumarin - Google Patents
Verfahren zur Gewinnung von CumarinInfo
- Publication number
- DE2502690C2 DE2502690C2 DE2502690A DE2502690A DE2502690C2 DE 2502690 C2 DE2502690 C2 DE 2502690C2 DE 2502690 A DE2502690 A DE 2502690A DE 2502690 A DE2502690 A DE 2502690A DE 2502690 C2 DE2502690 C2 DE 2502690C2
- Authority
- DE
- Germany
- Prior art keywords
- coumarin
- sodium
- weight
- potassium
- water
- 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
- C07D311/06—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2
- C07D311/08—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring
- C07D311/10—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring unsubstituted
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyrane Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Cosmetics (AREA)
- Fats And Perfumes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7401012A NL7401012A (nl) | 1974-01-25 | 1974-01-25 | Zuivering van cumarine en gealkyleerde derivaten hiervan. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2502690A1 DE2502690A1 (de) | 1975-07-31 |
| DE2502690C2 true DE2502690C2 (de) | 1984-05-10 |
Family
ID=19820611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2502690A Expired DE2502690C2 (de) | 1974-01-25 | 1975-01-23 | Verfahren zur Gewinnung von Cumarin |
Country Status (11)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3191333B2 (ja) * | 1990-12-19 | 2001-07-23 | 住友化学工業株式会社 | ３，４−ジヒドロクマリンの製造方法 |
| JP6496705B2 (ja) | 2016-12-16 | 2019-04-03 | 株式会社ダイセル | 抄紙シート及び抄紙シートの製造方法 |
-
1974
- 1974-01-25 NL NL7401012A patent/NL7401012A/xx not_active Application Discontinuation
-
1975
- 1975-01-20 GB GB236975A patent/GB1443406A/en not_active Expired
- 1975-01-21 CA CA218,341A patent/CA1053687A/en not_active Expired
- 1975-01-22 CH CH73975A patent/CH593276A5/xx not_active IP Right Cessation
- 1975-01-23 JP JP50010123A patent/JPS606950B2/ja not_active Expired
- 1975-01-23 DE DE2502690A patent/DE2502690C2/de not_active Expired
- 1975-01-24 SE SE7500786A patent/SE417609B/xx unknown
- 1975-01-24 BE BE152713A patent/BE824780A/nl unknown
- 1975-01-24 IT IT47831/75A patent/IT1026457B/it active
- 1975-01-24 FR FR7502247A patent/FR2259101B1/fr not_active Expired
- 1975-01-24 ES ES434112A patent/ES434112A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2502690A1 (de) | 1975-07-31 |
| NL7401012A (nl) | 1975-07-29 |
| CA1053687A (en) | 1979-05-01 |
| ES434112A1 (es) | 1976-12-16 |
| BE824780A (nl) | 1975-07-24 |
| IT1026457B (it) | 1978-09-20 |
| JPS50106967A (US20100268047A1-20101021-C00003.png) | 1975-08-22 |
| GB1443406A (en) | 1976-07-21 |
| CH593276A5 (US20100268047A1-20101021-C00003.png) | 1977-11-30 |
| FR2259101A1 (US20100268047A1-20101021-C00003.png) | 1975-08-22 |
| SE417609B (sv) | 1981-03-30 |
| FR2259101B1 (US20100268047A1-20101021-C00003.png) | 1978-02-24 |
| JPS606950B2 (ja) | 1985-02-21 |
| SE7500786L (US20100268047A1-20101021-C00003.png) | 1975-07-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8125 | Change of the main classification |
Ipc: C07D311/10 |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |