RO78954A - Procedeu pentru prepararea unor gama-pirone - Google Patents
Procedeu pentru prepararea unor gama-pironeInfo
- Publication number
- RO78954A RO78954A RO7799831A RO9983177A RO78954A RO 78954 A RO78954 A RO 78954A RO 7799831 A RO7799831 A RO 7799831A RO 9983177 A RO9983177 A RO 9983177A RO 78954 A RO78954 A RO 78954A
- Authority
- RO
- Romania
- Prior art keywords
- pirons
- gama
- preparation
- Prior art date
Links
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
-
- 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
- C07D309/32—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyrane Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71090176A | 1976-08-02 | 1976-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO78954A true RO78954A (ro) | 1982-04-12 |
Family
ID=24856004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO7799831A RO78954A (ro) | 1976-08-02 | 1977-07-20 | Procedeu pentru prepararea unor gama-pirone |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4082717A (ro) |
| JP (1) | JPS6046113B2 (ro) |
| RO (1) | RO78954A (ro) |
| SU (1) | SU991947A3 (ro) |
| ZA (1) | ZA773566B (ro) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191693A (en) * | 1976-11-12 | 1980-03-04 | Pfizer, Inc. | Preparation of gamma-pyrones from 3-substituted furans |
| JPS5481273A (en) * | 1977-12-12 | 1979-06-28 | Shin Etsu Chem Co Ltd | Preparation of pyranone halide |
| EP0032290B1 (en) * | 1980-01-11 | 1984-03-14 | Imperial Chemical Industries Plc | Process for the preparation of 1,4-dialkylbut-2-ene-1,4-diones |
| HU191198B (en) * | 1983-01-17 | 1987-01-28 | Otsuka Kagaku Kk | Acaricide compositions containing pyrane derivatives as active ingredients and process for preparing the active substances |
| US4742078A (en) * | 1983-01-17 | 1988-05-03 | Otsuka Kagaku Kabushiki Kaisha | Pyran derivatives |
| DE3401362C3 (de) * | 1983-02-04 | 1998-03-26 | Fev Motorentech Gmbh | Verfahren zur Steuerung von Viertakt-Kolbenbrennkraftmaschinen |
| US4443621A (en) * | 1983-03-14 | 1984-04-17 | Pfizer Inc. | p-Nitrophenyl 3-bromo-2,2-diethoxy-propionate and synthetic utility therefor |
| JPS62178723A (ja) * | 1986-02-01 | 1987-08-05 | Mazda Motor Corp | エンジンの吸気装置 |
| JPH0235477Y2 (ro) * | 1986-12-01 | 1990-09-26 | ||
| JPH0291625U (ro) * | 1989-01-09 | 1990-07-20 | ||
| DE4322480C2 (de) * | 1993-07-06 | 1996-05-02 | Meta Motoren Energietech | Vorrichtung zur variablen Ventilsteuerung von Brennkraftmaschinen |
| AU680742B2 (en) * | 1994-04-29 | 1997-08-07 | Pfizer Inc. | Maltol recovery |
| US5939565A (en) * | 1997-11-03 | 1999-08-17 | Cultor Food Science, Inc. | Recovery of γ-pyrones |
-
1976
- 1976-09-09 US US05/721,885 patent/US4082717A/en not_active Expired - Lifetime
-
1977
- 1977-06-14 ZA ZA00773566A patent/ZA773566B/xx unknown
- 1977-07-20 RO RO7799831A patent/RO78954A/ro unknown
-
1978
- 1978-06-16 SU SU782627107A patent/SU991947A3/ru active
-
1982
- 1982-07-02 JP JP57115302A patent/JPS6046113B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SU991947A3 (ru) | 1983-01-23 |
| JPS6046113B2 (ja) | 1985-10-14 |
| US4082717A (en) | 1978-04-04 |
| ZA773566B (en) | 1978-05-30 |
| JPS5810573A (ja) | 1983-01-21 |
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