DK178289A - Fremgangsmaade til fremstilling af gamma-pyroner - Google Patents
Fremgangsmaade til fremstilling af gamma-pyronerInfo
- Publication number
- DK178289A DK178289A DK178289A DK178289A DK178289A DK 178289 A DK178289 A DK 178289A DK 178289 A DK178289 A DK 178289A DK 178289 A DK178289 A DK 178289A DK 178289 A DK178289 A DK 178289A
- Authority
- DK
- Denmark
- Prior art keywords
- pyrons
- procedure
- manufacturing gamma
- gamma
- manufacturing
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
- C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Pyrane Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH156988 | 1988-04-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK178289D0 DK178289D0 (da) | 1989-04-13 |
| DK178289A true DK178289A (da) | 1989-10-28 |
Family
ID=4213494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK178289A DK178289A (da) | 1988-04-27 | 1989-04-13 | Fremgangsmaade til fremstilling af gamma-pyroner |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US5075461A (da) |
| EP (1) | EP0339454A3 (da) |
| JP (1) | JPH01313473A (da) |
| DK (1) | DK178289A (da) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69124699T2 (de) * | 1991-06-21 | 1997-05-28 | Byung Hoon Han | Neues salicylsäure-maltol-konjugat |
| KR100401783B1 (ko) * | 1995-12-12 | 2004-01-28 | 주식회사 두산콘프로덕츠코리아 | 향미증진제말톨의제조방법 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3832357A (en) * | 1971-05-26 | 1974-08-27 | Daicel Ltd | Process for preparation of 3-hydroxy-2-alkyl-4-pyrone |
-
1989
- 1989-04-13 DK DK178289A patent/DK178289A/da not_active Application Discontinuation
- 1989-04-19 EP EP19890107011 patent/EP0339454A3/de not_active Withdrawn
- 1989-04-19 US US07/340,341 patent/US5075461A/en not_active Expired - Fee Related
- 1989-04-26 JP JP1107091A patent/JPH01313473A/ja active Pending
-
1991
- 1991-07-12 US US07/729,240 patent/US5155254A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01313473A (ja) | 1989-12-18 |
| US5155254A (en) | 1992-10-13 |
| DK178289D0 (da) | 1989-04-13 |
| US5075461A (en) | 1991-12-24 |
| EP0339454A2 (de) | 1989-11-02 |
| EP0339454A3 (de) | 1990-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AHB | Application shelved due to non-payment |