JPS5910664B2 - ５−アセトアセチルアミノベンズイミダゾロンの製法 - Google Patents
５−アセトアセチルアミノベンズイミダゾロンの製法Info
- Publication number
- JPS5910664B2 JPS5910664B2 JP51047929A JP4792976A JPS5910664B2 JP S5910664 B2 JPS5910664 B2 JP S5910664B2 JP 51047929 A JP51047929 A JP 51047929A JP 4792976 A JP4792976 A JP 4792976A JP S5910664 B2 JPS5910664 B2 JP S5910664B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- reaction
- acetoacetylaminobenzimidazolone
- diketene
- carried out
- 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
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
- C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
- C07D235/24—Benzimidazoles; Hydrogenated benzimidazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
- C07D235/26—Oxygen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2518922A DE2518922C2 (de) | 1975-04-29 | 1975-04-29 | Verfahren zur Herstellung von 5- Acetoacetylaminobenzimidazolon-(2) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS51131876A JPS51131876A (en) | 1976-11-16 |
| JPS5910664B2 true JPS5910664B2 (ja) | 1984-03-10 |
Family
ID=5945233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51047929A Expired JPS5910664B2 (ja) | 1975-04-29 | 1976-04-28 | ５−アセトアセチルアミノベンズイミダゾロンの製法 |
Country Status (11)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2612391C2 (de) * | 1976-03-24 | 1982-09-23 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Herstellung von 5-Acetoacetylaminobenzimidazolon-(2) |
| DE4335614A1 (de) * | 1993-10-19 | 1995-04-27 | Hoechst Ag | Verfahren zur Herstellung von 5-Acetoacetylaminobenzimidazolon-2 |
| CN104130193B (zh) * | 2014-08-12 | 2016-09-28 | 南通醋酸化工股份有限公司 | 一种5-乙酰乙酰氨基苯并咪唑酮的合成方法 |
| CN108101850B (zh) * | 2017-12-21 | 2021-12-07 | 山东汇海医药化工有限公司 | 一种提高5-乙酰乙酰氨基苯并咪唑酮质量的方法 |
| CN109748877A (zh) * | 2019-03-21 | 2019-05-14 | 济南大学 | 一种5-乙酰乙酰氨基苯并咪唑酮的制备方法 |
| CN110128350A (zh) * | 2019-07-01 | 2019-08-16 | 山东汇海医药化工有限公司 | 一种提高5-乙酰乙酰氨基苯并咪唑酮质量的方法 |
| CN110845424B (zh) * | 2019-12-11 | 2021-03-26 | 山东汇海医药化工有限公司 | 一种5-乙酰乙酰氨基苯并咪唑酮的制备方法 |
| CN111039872A (zh) * | 2019-12-11 | 2020-04-21 | 山东汇海医药化工有限公司 | 一种提高5-乙酰乙酰氨基苯并咪唑酮收率的方法 |
| CN111763174B (zh) * | 2020-08-03 | 2023-06-09 | 山东汇海医药化工有限公司 | 一种减少5-乙酰乙酰氨基苯并咪唑酮母液蒸馏残渣的方法 |
| CN114369066A (zh) * | 2021-12-09 | 2022-04-19 | 山东汇海医药化工有限公司 | 一种5-乙酰乙酰氨基苯并咪唑酮母液循环利用的方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1982675A (en) * | 1934-12-04 | Pbeparation of acetoacetanilid | ||
| US2152132A (en) * | 1936-12-12 | 1939-03-28 | Carbide & Carbon Chem Corp | Acetoacetyl amides and process for their preparation |
| BE513633A (US06605200-20030812-C00035.png) * | 1951-08-21 | |||
| GB770263A (en) * | 1954-06-19 | 1957-03-20 | Wacker Chemie Gmbh | Process for the manufacture of acetoacetamides |
| GB962227A (en) * | 1960-08-23 | 1964-07-01 | Distillers Co Yeast Ltd | Production of aceto-acetarylamides |
| DE1644231A1 (de) * | 1967-10-27 | 1970-12-10 | Hoechst Ag | Wasserunloeslicher Monoazofarbstoff und Verfahren zu seiner Herstellung |
| US3963694A (en) * | 1971-03-03 | 1976-06-15 | Ciba-Geigy Corporation | Hydroxyquinolyl- and quinazolonylazoacetoacetylbenzimidazolone pigments |
-
1975
- 1975-04-29 DE DE2518922A patent/DE2518922C2/de not_active Expired
-
1976
- 1976-04-23 CH CH515476A patent/CH603597A5/xx not_active IP Right Cessation
- 1976-04-23 NL NL7604355A patent/NL7604355A/xx not_active Application Discontinuation
- 1976-04-27 US US05/680,719 patent/US4087610A/en not_active Expired - Lifetime
- 1976-04-27 IT IT22738/76A patent/IT1062997B/it active
- 1976-04-27 IN IN735/CAL/1976A patent/IN144220B/en unknown
- 1976-04-28 JP JP51047929A patent/JPS5910664B2/ja not_active Expired
- 1976-04-28 CA CA251,369A patent/CA1058621A/en not_active Expired
- 1976-04-29 FR FR7612714A patent/FR2309542A1/fr active Granted
- 1976-04-29 GB GB17484/76A patent/GB1534077A/en not_active Expired
- 1976-04-29 BE BE166575A patent/BE841284A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE841284A (fr) | 1976-10-29 |
| JPS51131876A (en) | 1976-11-16 |
| GB1534077A (en) | 1978-11-29 |
| CH603597A5 (US06605200-20030812-C00035.png) | 1978-08-31 |
| DE2518922A1 (de) | 1976-11-18 |
| IT1062997B (it) | 1985-02-11 |
| NL7604355A (nl) | 1976-11-02 |
| FR2309542A1 (fr) | 1976-11-26 |
| CA1058621A (en) | 1979-07-17 |
| FR2309542B1 (US06605200-20030812-C00035.png) | 1980-08-01 |
| IN144220B (US06605200-20030812-C00035.png) | 1978-04-08 |
| DE2518922C2 (de) | 1982-08-19 |
| US4087610A (en) | 1978-05-02 |
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