ES426383A1 - Process for the preparation of citric acid and derivatives thereof - Google Patents
Process for the preparation of citric acid and derivatives thereofInfo
- Publication number
- ES426383A1 ES426383A1 ES426383A ES426383A ES426383A1 ES 426383 A1 ES426383 A1 ES 426383A1 ES 426383 A ES426383 A ES 426383A ES 426383 A ES426383 A ES 426383A ES 426383 A1 ES426383 A1 ES 426383A1
- Authority
- ES
- Spain
- Prior art keywords
- derivatives
- preparation
- citric acid
- different
- same
- 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
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/48—Compounds containing oxirane rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms, e.g. ester or nitrile radicals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Cosmetics (AREA)
- Epoxy Compounds (AREA)
Abstract
Procedure for the preparation of citric acid and its derivatives, characterized in that it comprises the following two stages: a) epoxidation of itaconic acid derivatives having the formula ** (See formula) ** wherein R and R1, the same or different from each other, can be hydrogen, an alkyl, aryl or cycloalkyl radical; X and X', the same or different from each other, are a group selected from -CN, -COOR, -COOH, -COOMe, -CONH2, where Me is a monovalent metal and R has the meaning mentioned above, or may be divalent radicals capable of reacting with each other to form a heteroatomic cyclic compound with five atoms; b) reaction of the epoxide obtained in the preceding step with hydrocyanic acid or cyanide, and simultaneously hydrolysis of the cyanhydrin produced. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT23863/73A IT987222B (en) | 1973-05-09 | 1973-05-09 | PROCESS FOR THE PREPARATION OF CITRIC ACID AND ITS DERIVATIVES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES426383A1 true ES426383A1 (en) | 1976-07-01 |
Family
ID=11210493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES426383A Expired ES426383A1 (en) | 1973-05-09 | 1974-05-08 | Process for the preparation of citric acid and derivatives thereof |
Country Status (24)
| Country | Link |
|---|---|
| JP (1) | JPS5628894B2 (en) |
| AR (1) | AR201865A1 (en) |
| AT (1) | AT332366B (en) |
| BE (1) | BE814615A (en) |
| BG (1) | BG24404A3 (en) |
| BR (1) | BR7403406D0 (en) |
| CH (1) | CH603530A5 (en) |
| CS (1) | CS181759B2 (en) |
| DD (1) | DD111366A5 (en) |
| DE (1) | DE2422376B2 (en) |
| EG (1) | EG11325A (en) |
| ES (1) | ES426383A1 (en) |
| FR (1) | FR2228762B1 (en) |
| GB (1) | GB1421310A (en) |
| HU (1) | HU169263B (en) |
| IE (1) | IE39249B1 (en) |
| IT (1) | IT987222B (en) |
| LU (1) | LU70020A1 (en) |
| MW (1) | MW1674A1 (en) |
| NL (1) | NL7406208A (en) |
| RO (1) | RO63038A (en) |
| YU (1) | YU36142B (en) |
| ZA (1) | ZA742521B (en) |
| ZM (1) | ZM7174A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58213895A (en) * | 1982-06-07 | 1983-12-12 | Nippon Alum Mfg Co Ltd:The | Electrolytic multicolor pigmentation method of aluminum and aluminum alloy |
| JPS59128389U (en) * | 1983-02-18 | 1984-08-29 | 株式会社明電舎 | Work equipment attachment/detachment device |
| JPS6015478U (en) * | 1983-07-11 | 1985-02-01 | トヨタ自動車株式会社 | Detachment device for replacing welding guns on welding robots |
| JPS6130390A (en) * | 1984-07-20 | 1986-02-12 | 日東精工株式会社 | Positioning device for working tool of industrial robot |
| DE3836271A1 (en) * | 1988-10-25 | 1990-04-26 | Guenter Schmidt | METHOD FOR PRODUCING (+) ISOCITRONIC ACID AND ITS DERIVATIVES |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3156709A (en) * | 1962-03-06 | 1964-11-10 | Du Pont | Oxidation process |
| US3769337A (en) * | 1971-08-18 | 1973-10-30 | Ethyl Corp | Process for the preparation of citric acid |
-
1973
- 1973-05-09 IT IT23863/73A patent/IT987222B/en active
-
1974
- 1974-04-19 ZA ZA00742521A patent/ZA742521B/en unknown
- 1974-04-22 RO RO7400078517A patent/RO63038A/en unknown
- 1974-04-24 EG EG139/74A patent/EG11325A/en active
- 1974-04-25 BR BR3406/74A patent/BR7403406D0/en unknown
- 1974-04-26 MW MW16/74*UA patent/MW1674A1/en unknown
- 1974-04-29 FR FR7414889A patent/FR2228762B1/fr not_active Expired
- 1974-04-30 ZM ZM71/74A patent/ZM7174A1/en unknown
- 1974-05-01 GB GB1919674A patent/GB1421310A/en not_active Expired
- 1974-05-02 IE IE940/74A patent/IE39249B1/en unknown
- 1974-05-06 BE BE143981A patent/BE814615A/en unknown
- 1974-05-07 YU YU1250/74A patent/YU36142B/en unknown
- 1974-05-07 CH CH621574A patent/CH603530A5/xx not_active IP Right Cessation
- 1974-05-08 CS CS7400003336A patent/CS181759B2/en unknown
- 1974-05-08 AT AT379774A patent/AT332366B/en not_active IP Right Cessation
- 1974-05-08 LU LU70020A patent/LU70020A1/xx unknown
- 1974-05-08 ES ES426383A patent/ES426383A1/en not_active Expired
- 1974-05-08 NL NL7406208A patent/NL7406208A/xx not_active Application Discontinuation
- 1974-05-08 HU HUSA2641A patent/HU169263B/hu unknown
- 1974-05-08 DD DD178364A patent/DD111366A5/xx unknown
- 1974-05-09 JP JP5079974A patent/JPS5628894B2/ja not_active Expired
- 1974-05-09 DE DE2422376A patent/DE2422376B2/en not_active Withdrawn
- 1974-05-09 AR AR253660A patent/AR201865A1/en active
- 1974-05-09 BG BG7400026641A patent/BG24404A3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AR201865A1 (en) | 1975-04-24 |
| IE39249L (en) | 1974-11-09 |
| AU6834274A (en) | 1975-10-30 |
| JPS5628894B2 (en) | 1981-07-04 |
| ZA742521B (en) | 1975-06-25 |
| FR2228762B1 (en) | 1978-02-03 |
| YU36142B (en) | 1982-02-25 |
| GB1421310A (en) | 1976-01-14 |
| NL7406208A (en) | 1974-11-12 |
| BR7403406D0 (en) | 1974-12-24 |
| YU125074A (en) | 1981-04-30 |
| IE39249B1 (en) | 1978-08-30 |
| CH603530A5 (en) | 1978-08-15 |
| BE814615A (en) | 1974-09-02 |
| RO63038A (en) | 1978-05-15 |
| LU70020A1 (en) | 1974-10-01 |
| BG24404A3 (en) | 1978-02-10 |
| DE2422376B2 (en) | 1979-07-05 |
| JPS5014624A (en) | 1975-02-15 |
| DD111366A5 (en) | 1975-02-12 |
| HU169263B (en) | 1976-10-28 |
| FR2228762A1 (en) | 1974-12-06 |
| AT332366B (en) | 1976-09-27 |
| EG11325A (en) | 1978-03-29 |
| DE2422376A1 (en) | 1974-11-28 |
| IT987222B (en) | 1975-02-20 |
| MW1674A1 (en) | 1975-04-09 |
| ATA379774A (en) | 1976-01-15 |
| ZM7174A1 (en) | 1975-02-21 |
| CS181759B2 (en) | 1978-03-31 |
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