IN186855B - - Google Patents
Info
- Publication number
- IN186855B IN186855B IN2956MA1997A IN186855B IN 186855 B IN186855 B IN 186855B IN 2956MA1997 A IN2956MA1997 A IN 2956MA1997A IN 186855 B IN186855 B IN 186855B
- Authority
- IN
- India
Links
Classifications
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/138—Halogens; Compounds thereof with alkaline earth metals, magnesium, beryllium, zinc, cadmium or mercury
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
- C07D311/70—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with two hydrocarbon radicals attached in position 2 and elements other than carbon and hydrogen in position 6
- C07D311/72—3,4-Dihydro derivatives having in position 2 at least one methyl radical and in position 6 one oxygen atom, e.g. tocopherols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyrane Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996154038 DE19654038A1 (de) | 1996-12-23 | 1996-12-23 | Verfahren zur Herstellung von alpha-Tocopherol oder alpha-Tocopherylacetat durch Umsetzen von Trimethylhydrochinon und Phytol oder Isophytol unter Rückführung des Kondensationskatalysators Zinkchlorid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN186855B true IN186855B (ru) | 2001-11-24 |
Family
ID=29285767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN2956MA1997 IN186855B (ru) | 1996-12-23 | 1997-12-22 |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100374430C (ru) |
| DE (1) | DE19654038A1 (ru) |
| IN (1) | IN186855B (ru) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1778661B1 (en) | 2004-06-11 | 2014-01-22 | DSM IP Assets B.V. | Process for the manufacture of chroman derivatives, especially alpha-tocopherol and alkanoates thereof |
| CN102964330A (zh) * | 2011-08-31 | 2013-03-13 | 卫材R&D管理有限公司 | α-生育酚及α-生育酚乙酸酯的制造方法 |
| CN103788052A (zh) * | 2013-10-17 | 2014-05-14 | 安徽丰原发酵技术工程研究有限公司 | 一种维生素e醋酸酯的制备方法 |
| CN106565659B (zh) * | 2016-11-01 | 2019-06-18 | 万华化学集团股份有限公司 | 一种制备维生素e乙酸酯的方法 |
| CN110386712B (zh) * | 2019-08-02 | 2021-10-22 | 山东新和成维生素有限公司 | 一种含锌废水综合利用的方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2297041A1 (fr) * | 1975-01-11 | 1976-08-06 | Ile De France | N-(1'-allylpyrrolidinyl 2'methyl)2-methoxy 4,5-azimido benzamide, ses derives et ses procedes de preparation |
| US5663376A (en) * | 1994-07-27 | 1997-09-02 | Eisai Co., Ltd. | Process for the preparation of α-tocopherol |
-
1996
- 1996-12-23 DE DE1996154038 patent/DE19654038A1/de not_active Withdrawn
-
1997
- 1997-12-22 CN CNB971072906A patent/CN100374430C/zh not_active Expired - Lifetime
- 1997-12-22 IN IN2956MA1997 patent/IN186855B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN100374430C (zh) | 2008-03-12 |
| CN1189495A (zh) | 1998-08-05 |
| DE19654038A1 (de) | 1998-06-25 |