ES464174A1 - Process for producing 3-bromophthalide - Google Patents
Process for producing 3-bromophthalideInfo
- Publication number
- ES464174A1 ES464174A1 ES464174A ES464174A ES464174A1 ES 464174 A1 ES464174 A1 ES 464174A1 ES 464174 A ES464174 A ES 464174A ES 464174 A ES464174 A ES 464174A ES 464174 A1 ES464174 A1 ES 464174A1
- Authority
- ES
- Spain
- Prior art keywords
- bromophthalide
- producing
- chlorophthalide
- hbr
- molten
- 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
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D307/87—Benzo [c] furans; Hydrogenated benzo [c] furans
- C07D307/88—Benzo [c] furans; Hydrogenated benzo [c] furans with one oxygen atom directly attached in position 1 or 3
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Furan Compounds (AREA)
Abstract
3-Bromophthalide is prepared from 3-chlorophthalide by allowing the stoichiometric quantity of HBr to act at above 85 DEG C on molten 3-chlorophthalide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762652299 DE2652299B2 (en) | 1976-11-17 | 1976-11-17 | Process for the preparation of 3-bromophthalide |
Publications (1)
Publication Number | Publication Date |
---|---|
ES464174A1 true ES464174A1 (en) | 1978-09-01 |
Family
ID=5993339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES464174A Expired ES464174A1 (en) | 1976-11-17 | 1977-11-16 | Process for producing 3-bromophthalide |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS6056147B2 (en) |
BE (1) | BE860901A (en) |
CH (1) | CH630622A5 (en) |
DE (1) | DE2652299B2 (en) |
DK (1) | DK143132C (en) |
ES (1) | ES464174A1 (en) |
FR (1) | FR2371440A1 (en) |
GB (1) | GB1537815A (en) |
IT (1) | IT1112096B (en) |
NL (1) | NL7712620A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2934822A1 (en) * | 1979-08-29 | 1981-03-19 | Dynamit Nobel Ag, 5210 Troisdorf | METHOD FOR PRODUCING 3-BROMPHTHALIDE |
CN116041295B (en) * | 2023-03-31 | 2023-06-06 | 寿光祥铭化工有限公司 | Preparation method of 3-bromophthalide |
-
1976
- 1976-11-17 DE DE19762652299 patent/DE2652299B2/en active Granted
-
1977
- 1977-11-15 GB GB4754277A patent/GB1537815A/en not_active Expired
- 1977-11-15 IT IT5181877A patent/IT1112096B/en active
- 1977-11-16 DK DK507977A patent/DK143132C/en not_active IP Right Cessation
- 1977-11-16 FR FR7734473A patent/FR2371440A1/en active Granted
- 1977-11-16 CH CH1401277A patent/CH630622A5/en not_active IP Right Cessation
- 1977-11-16 ES ES464174A patent/ES464174A1/en not_active Expired
- 1977-11-16 NL NL7712620A patent/NL7712620A/en not_active Application Discontinuation
- 1977-11-16 JP JP13775977A patent/JPS6056147B2/en not_active Expired
- 1977-11-17 BE BE182675A patent/BE860901A/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB1537815A (en) | 1979-01-04 |
FR2371440B1 (en) | 1982-07-09 |
DE2652299B2 (en) | 1978-08-31 |
NL7712620A (en) | 1978-05-19 |
IT1112096B (en) | 1986-01-13 |
DE2652299C3 (en) | 1979-04-26 |
CH630622A5 (en) | 1982-06-30 |
DE2652299A1 (en) | 1978-05-18 |
JPS5363372A (en) | 1978-06-06 |
DK143132B (en) | 1981-06-29 |
DK143132C (en) | 1981-11-23 |
BE860901A (en) | 1978-03-16 |
DK507977A (en) | 1978-05-18 |
FR2371440A1 (en) | 1978-06-16 |
JPS6056147B2 (en) | 1985-12-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19920721 |