RO64159A - Procede et installation pour la preparation du dl-alpha-hydroxy-beta,beta-dimethyle gamma-butirolactame en systeme continu - Google Patents
Procede et installation pour la preparation du dl-alpha-hydroxy-beta,beta-dimethyle gamma-butirolactame en systeme continuInfo
- Publication number
- RO64159A RO64159A RO7252272A RO7252272A RO64159A RO 64159 A RO64159 A RO 64159A RO 7252272 A RO7252272 A RO 7252272A RO 7252272 A RO7252272 A RO 7252272A RO 64159 A RO64159 A RO 64159A
- Authority
- RO
- Romania
- Prior art keywords
- beta
- butirolactam
- alpha
- hydroxy
- plant
- Prior art date
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
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/26—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D307/30—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member 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 to ring carbon atoms
- C07D307/32—Oxygen atoms
- C07D307/33—Oxygen atoms in position 2, the oxygen atom being in its keto or unsubstituted enol form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
- B01J19/2435—Loop-type reactors
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/08—Preparation of carboxylic acids or their salts, halides or anhydrides from nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD15840971A DD99368A1 (ru) | 1971-10-19 | 1971-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO64159A true RO64159A (fr) | 1978-10-15 |
Family
ID=5484467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO7252272A RO64159A (fr) | 1971-10-19 | 1972-10-16 | Procede et installation pour la preparation du dl-alpha-hydroxy-beta,beta-dimethyle gamma-butirolactame en systeme continu |
Country Status (9)
| Country | Link |
|---|---|
| BE (1) | BE828390Q (ru) |
| CH (1) | CH577987A5 (ru) |
| DD (1) | DD99368A1 (ru) |
| DE (1) | DE2228641B2 (ru) |
| FR (1) | FR2156791A1 (ru) |
| HU (1) | HU164765B (ru) |
| PL (1) | PL94404B1 (ru) |
| RO (1) | RO64159A (ru) |
| SU (1) | SU706099A1 (ru) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2758883C3 (de) * | 1977-12-30 | 1981-10-08 | Basf Ag, 6700 Ludwigshafen | Verfahren zur kontinuierlichen Herstellung von α-Hydroxy-β,β-dimethyl-γ-butyrolacton |
| DE2809179A1 (de) * | 1978-03-03 | 1979-09-13 | Basf Ag | Verfahren zur extraktion von pantolacton aus seinen waessrigen loesungen |
| US4517132A (en) * | 1983-06-29 | 1985-05-14 | Union Carbide Corporation | Process for preparation of cyanohydrins |
| EP1160235B1 (en) * | 2000-06-02 | 2006-09-20 | Nippon Shokubai Co., Ltd. | A method for producing alpha-hydroxycarboxylic acid |
-
1971
- 1971-10-19 DD DD15840971A patent/DD99368A1/xx unknown
-
1972
- 1972-06-13 DE DE19722228641 patent/DE2228641B2/de not_active Ceased
- 1972-10-16 RO RO7252272A patent/RO64159A/ro unknown
- 1972-10-17 CH CH1514272A patent/CH577987A5/xx not_active IP Right Cessation
- 1972-10-17 HU HUJE000537 patent/HU164765B/hu unknown
- 1972-10-18 FR FR7236898A patent/FR2156791A1/fr active Granted
- 1972-10-18 SU SU721839389A patent/SU706099A1/ru active
- 1972-10-18 PL PL15832972A patent/PL94404B1/pl unknown
-
1975
- 1975-04-25 BE BE155772A patent/BE828390Q/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CH577987A5 (ru) | 1976-07-30 |
| HU164765B (ru) | 1974-04-11 |
| DE2228641A1 (de) | 1973-04-26 |
| FR2156791A1 (en) | 1973-06-01 |
| DE2228641B2 (de) | 1976-09-09 |
| FR2156791B1 (ru) | 1977-04-01 |
| SU706099A1 (ru) | 1979-12-30 |
| PL94404B1 (pl) | 1977-08-31 |
| DD99368A1 (ru) | 1973-08-13 |
| BE828390Q (fr) | 1975-08-18 |
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