IE39249B1 - Process for producing citric acid and derivatives thereof - Google Patents
Process for producing citric acid and derivatives thereofInfo
- Publication number
- IE39249B1 IE39249B1 IE940/74A IE94074A IE39249B1 IE 39249 B1 IE39249 B1 IE 39249B1 IE 940/74 A IE940/74 A IE 940/74A IE 94074 A IE94074 A IE 94074A IE 39249 B1 IE39249 B1 IE 39249B1
- Authority
- IE
- Ireland
- Prior art keywords
- derivatives
- citric acid
- acid
- carbon atoms
- prepared
- Prior art date
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)
- Epoxy Compounds (AREA)
- Cosmetics (AREA)
Abstract
1421310 Citric acid and derivatives SNAMPROGETTI SpA 1 May 1974 [9 May 1973] 19196/74 Heading C2C Citric acid and derivatives thereof are prepared by epoxidizing itaconic acid or derivatives of formula wherein each of R and R<SP>1</SP> which can be the same or different, is a hydrogen atom or a hydrocarbon radical, and either each of X and X<SP>1</SP> which can be the same or different is -CN, -COOR<SP>2</SP>, -COOM, or -CONH 2 where M is a monovalent metal atom or represents part of a metal atom having a valency of at least two and R<SP>2</SP> is a hydrogen atom or a hydrocarbon radical, or X and X<SP>1</SP> together represent a divalent radical and together with the two carbon atoms to which they are attached form a heterocyclic ring with five carbon atoms to give which is reacted with hydrocyanic acid or a cyanide, and the cyanohydrin hydrolysed. An example describes the preparation of the the trimethyl ester of citric acid through sodium salt of epoxyitaconic acid, prepared by the reaction of hydrogen peroxide on itaconic acid in the presence of sodium tungstate.
[GB1421310A]
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 (2)
| Publication Number | Publication Date |
|---|---|
| IE39249L IE39249L (en) | 1974-11-09 |
| IE39249B1 true IE39249B1 (en) | 1978-08-30 |
Family
ID=11210493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE940/74A IE39249B1 (en) | 1973-05-09 | 1974-05-02 | Process for producing 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 AT AT379774A patent/AT332366B/en not_active IP Right Cessation
- 1974-05-08 ES ES426383A patent/ES426383A1/en not_active Expired
- 1974-05-08 CS CS7400003336A patent/CS181759B2/en unknown
- 1974-05-08 LU LU70020A patent/LU70020A1/xx unknown
- 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 BG BG026641A patent/BG24404A3/en unknown
- 1974-05-09 AR AR253660A patent/AR201865A1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5628894B2 (en) | 1981-07-04 |
| BG24404A3 (en) | 1978-02-10 |
| YU125074A (en) | 1981-04-30 |
| RO63038A (en) | 1978-05-15 |
| IE39249L (en) | 1974-11-09 |
| NL7406208A (en) | 1974-11-12 |
| GB1421310A (en) | 1976-01-14 |
| AT332366B (en) | 1976-09-27 |
| HU169263B (en) | 1976-10-28 |
| LU70020A1 (en) | 1974-10-01 |
| FR2228762B1 (en) | 1978-02-03 |
| AR201865A1 (en) | 1975-04-24 |
| ZM7174A1 (en) | 1975-02-21 |
| EG11325A (en) | 1978-03-29 |
| DD111366A5 (en) | 1975-02-12 |
| JPS5014624A (en) | 1975-02-15 |
| ATA379774A (en) | 1976-01-15 |
| CH603530A5 (en) | 1978-08-15 |
| AU6834274A (en) | 1975-10-30 |
| ES426383A1 (en) | 1976-07-01 |
| DE2422376A1 (en) | 1974-11-28 |
| DE2422376B2 (en) | 1979-07-05 |
| BR7403406D0 (en) | 1974-12-24 |
| ZA742521B (en) | 1975-06-25 |
| BE814615A (en) | 1974-09-02 |
| FR2228762A1 (en) | 1974-12-06 |
| CS181759B2 (en) | 1978-03-31 |
| YU36142B (en) | 1982-02-25 |
| MW1674A1 (en) | 1975-04-09 |
| IT987222B (en) | 1975-02-20 |
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