EP1697317A1 - Verfahren zur herstellung von vitamin a- acetat - Google Patents
Verfahren zur herstellung von vitamin a- acetatInfo
- Publication number
- EP1697317A1 EP1697317A1 EP04803835A EP04803835A EP1697317A1 EP 1697317 A1 EP1697317 A1 EP 1697317A1 EP 04803835 A EP04803835 A EP 04803835A EP 04803835 A EP04803835 A EP 04803835A EP 1697317 A1 EP1697317 A1 EP 1697317A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- salt
- weight
- formula
- synthesis
- acetate
- 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.)
- Withdrawn
Links
- 229960000342 retinol acetate Drugs 0.000 title claims abstract description 14
- QGNJRVVDBSJHIZ-QHLGVNSISA-N retinyl acetate Chemical compound CC(=O)OC\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C QGNJRVVDBSJHIZ-QHLGVNSISA-N 0.000 title claims abstract description 14
- 235000019173 retinyl acetate Nutrition 0.000 title claims abstract description 14
- 239000011770 retinyl acetate Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 45
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 33
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011877 solvent mixture Substances 0.000 claims abstract description 15
- 238000007239 Wittig reaction Methods 0.000 claims abstract description 11
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 4
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims abstract description 3
- 150000003839 salts Chemical class 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 28
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 24
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 16
- 229910021529 ammonia Inorganic materials 0.000 claims description 11
- 238000003786 synthesis reaction Methods 0.000 claims description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- JZMJDSHXVKJFKW-UHFFFAOYSA-M methyl sulfate(1-) Chemical compound COS([O-])(=O)=O JZMJDSHXVKJFKW-UHFFFAOYSA-M 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 2
- LPDDKAJRWGPGSI-UHFFFAOYSA-N (3-methyl-4-oxobut-2-enyl) acetate Chemical compound CC(=O)OCC=C(C)C=O LPDDKAJRWGPGSI-UHFFFAOYSA-N 0.000 abstract description 3
- 229920002554 vinyl polymer Polymers 0.000 abstract description 3
- GELSOTNVVKOYAW-UHFFFAOYSA-N ethyl(triphenyl)phosphanium Chemical class C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(CC)C1=CC=CC=C1 GELSOTNVVKOYAW-UHFFFAOYSA-N 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 20
- 239000011541 reaction mixture Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 239000002585 base Substances 0.000 description 5
- LAIUFBWHERIJIH-UHFFFAOYSA-N 3-Methylheptane Chemical compound CCCCC(C)CC LAIUFBWHERIJIH-UHFFFAOYSA-N 0.000 description 4
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000010626 work up procedure Methods 0.000 description 3
- QEGNUYASOUJEHD-UHFFFAOYSA-N 1,1-dimethylcyclohexane Chemical compound CC1(C)CCCCC1 QEGNUYASOUJEHD-UHFFFAOYSA-N 0.000 description 2
- GXDHCNNESPLIKD-UHFFFAOYSA-N 2-methylhexane Chemical compound CCCCC(C)C GXDHCNNESPLIKD-UHFFFAOYSA-N 0.000 description 2
- SFRKSDZMZHIISH-UHFFFAOYSA-N 3-ethylhexane Chemical compound CCCC(CC)CC SFRKSDZMZHIISH-UHFFFAOYSA-N 0.000 description 2
- VLJXXKKOSFGPHI-UHFFFAOYSA-N 3-methylhexane Chemical compound CCCC(C)CC VLJXXKKOSFGPHI-UHFFFAOYSA-N 0.000 description 2
- CHBAWFGIXDBEBT-UHFFFAOYSA-N 4-methylheptane Chemical compound CCCC(C)CCC CHBAWFGIXDBEBT-UHFFFAOYSA-N 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- IFTRQJLVEBNKJK-UHFFFAOYSA-N Ethylcyclopentane Chemical compound CCC1CCCC1 IFTRQJLVEBNKJK-UHFFFAOYSA-N 0.000 description 2
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- -1 aliphatic alcohols Chemical class 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 235000015872 dietary supplement Nutrition 0.000 description 2
- QWHNJUXXYKPLQM-UHFFFAOYSA-N dimethyl cyclopentane Natural products CC1(C)CCCC1 QWHNJUXXYKPLQM-UHFFFAOYSA-N 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methylcyclopentane Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 235000019728 animal nutrition Nutrition 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C403/00—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone
- C07C403/06—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by singly-bound oxygen atoms
- C07C403/12—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by singly-bound oxygen atoms by esterified hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/16—Systems containing only non-condensed rings with a six-membered ring the ring being unsaturated
Definitions
- the present invention relates to a process for the preparation of vitamin A acetate (VAA) by reacting? -Vinyl-lonol with triphenylphosphine in the presence of sulfuric acid to yS-lonylidenethyltriphenylphosphonium salts (C15 salt) and subsequent Wittig reaction with 4-acetoxy -2-methyl-but-2-en-al (C5 acetate).
- VAA vitamin A acetate
- Vitamin A acetate is an important industrial product that is widely used in the pharmaceutical and cosmetic sectors, as well as in food and nutritional supplements and as a feed additive in animal nutrition.
- DE-A 2729974 describes a technical synthesis of C15 salt starting from jff-vinyl-ionol by reaction with triphenylphosphine in the presence of sulfuric acid.
- Lower aliphatic alcohols, in particular methanol, are described as solvents.
- DE-A 1279677 discloses a continuous process for carrying out the Wittig reaction of C15 salt with C5 acetate in methanolic solution at temperatures below 5 ° C.
- DE-A 2636879 describes a reaction in two-phase systems consisting of water and halogenated organic solvents at temperatures from 0 to 60 ° C.
- DE-A 2733231 describes an embodiment of the Wittig reaction of various C15 salts with C5 acetate in water at temperatures from 0 to about 100 ° C.
- ammonia is disclosed as the base.
- the reaction of the C15 salts obtained using sulfuric acid, a hydrogen sulfate or phosphoric acid is particularly advantageously carried out at room temperature.
- -Vinyl-lonol produced in any way is suitable for producing the C15 salt.
- -VinylI-lonol is used with a purity of about 90 to about 99%, preferably those with a purity of about 90 to about 95%.
- triphenylphosphine is suitable for the implementation of the yff vinyl ionol.
- Triphenylphosphine with a purity of about 95 to about 99.9%, preferably of about 98 to about 99.9%, is advantageously used in the process according to the invention.
- an approximately equimolar amount of triphenylphosphine preferably from about 0.95 to about 1.05 equivalents, is used. It is often advantageous to use triphenylphosphine in a slight deficit, i.e. in an amount of, based on yff-vinyl-ionol, about 0.95 to about 0.995 equivalents.
- methanol and water which additionally contain further organic solvents, serve as the dissolving medium in carrying out the C15 synthesis according to the invention.
- Aqueous methanol is usually used, with an excess of methanol usually being present.
- Another organic component is added to the solvent mixture, for example a hydrocarbon with 5 to 8 carbon atoms, which can be aliphatic, cyclic or aromatic, such as e.g.
- methanol which already contains the hydrocarbons as an impurity.
- alkanes such as heptane, cyclohexane, octane, isooctane or mixtures thereof has proven to be particularly advantageous. It has been shown that the course of the reaction depends on the composition of the dissolving medium. Good results are generally achieved using ternary solvent mixtures which consist of methanol, water and heptane, the heptane used also being able to contain up to about 40% by weight of further hydrocarbons with about 5 to about 8 carbon atoms.
- solvent mixtures which consist of about 64 to 72% by weight of methanol and about 14 to 18% by weight.
- Water and about 14 to 18 wt .-% of heptane which can contain up to 40 wt.% Of other hydrocarbons.
- solvent mixtures which consist of about 66.5% by weight of methanol, about 16.5% by weight of water and about 17% by weight of heptane, with heptane in the mixture instead of heptane can be used with other hydrocarbons as mentioned above.
- concentration of the reagents in the selected solvent mixture can in principle be varied over a wide range. Taking into account the economic aspect, however, it is advantageous not to work with excessive dilution. Concentrations based on the amount of the total reaction mixture of about 16 to about 24% by weight, preferably about 18 to about 22% by weight? -Vinyl-ionol and about 18 to about 26% by weight, have been found to be expedient about 20 to about 24 weight percent triphenylphosphine.
- the solvent mixtures used are separated off from the reaction products and preferably recycled, for example in the course of a further reaction according to the invention of yff-vinyl-ionol with triphenylphosphine to give the C15 salt.
- Changes in the composition of the solvent mixture caused thereby can be compensated for by adding additional amounts of the respective components.
- Changes in the composition of the alkane component for example due to the enrichment or depletion of individual hydrocarbons, are not critical as long as they do not appreciably affect the course of the reaction.
- the reaction of ⁇ -vinyl ionol with triphenylphosphine to form the C15 salt is carried out in the presence of sulfuric acid.
- concentration of sulfuric acid can be varied over a wide range and is usually about 50 to about 96% by weight.
- Sulfuric acid is preferably used at a concentration of about 60 to about 90% by weight, particularly preferably from about 70 to about 80% by weight.
- About 73 to about 77% by weight sulfuric acid is very particularly preferably used. It is expressed in an approximately equimolar amount, based on the jff vinyl alcohol to be reacted, i.e. used in an amount of about 0.9 to about 1.1 equivalents. It is advantageous to use a slight excess of sulfuric acid, i.e. about 1.01 to about 1.1 equivalents.
- triphenylphosphine is generally introduced in the selected solvent mixture and the necessary amount of sulfuric acid is added at from about 30 to about 50.degree.
- the sulfuric acid is advantageously added in portions or continuously over a longer period of time (about 1 to about 10 h).
- the selected amount of jff-vinyl-ionol is added and a temperature of about 45 to about 55 ° C. is advantageously set.
- the reaction is usually complete after about 2 to about 20 hours.
- the reaction mixture obtained can be worked up in a manner known per se to the person skilled in the art.
- preferred reaction products contain as little as possible, for example about 0.1 to about 15 mol% of the methyl sulfate.
- C15 salt, which contains only about 0.1 to about 5 mol% of the methyl sulfate, is particularly preferred, especially in the context of the further reaction according to the invention to give vitamin A acetate.
- the C15 salt obtained is converted into vitamin A acetate by reaction with the aldehyde of the formula IV (4-acetoxy-2-methyl-but-2-en-al) referred to as C5 acetate.
- the C5 acetate there are no special requirements for the C5 acetate to be used. As a rule, it is obtained in a purity that is usually expected from chemical intermediates, i.e. a purity of about 90 to about 99%.
- the reaction with the C15 salt obtained according to the invention is carried out in water or aqueous solvent mixtures which can contain, for example, alcohols having 1 to 4 carbon atoms, such as methanol, ethanol, propanol or isopropanol.
- the reaction is preferably carried out in water.
- a solution or a mixture of the C15 salt in the chosen solvent medium is advantageously placed at about 45 to about 55 ° C, preferably at about 48 to about 52 ° C, and a suitable base such as e.g. Sodium hydroxide solution, potassium hydroxide solution, alkali or alkaline earth hydroxides, alkaline earth oxides such as MgO or BaO, sodium carbonate, potassium carbonate or other basic carbonates, alcoholates or amines such as e.g. Triethylamine or mixtures of the compounds mentioned.
- a suitable base such as e.g. Sodium hydroxide solution, potassium hydroxide solution, alkali or alkaline earth hydroxides, alkaline earth oxides such as MgO or BaO, sodium carbonate, potassium carbonate or other basic carbonates, alcoholates or amines such as e.g. Triethylamine or mixtures of the compounds mentioned.
- a base which is preferred in the process according to the invention is ammonia, which is advantageously used in an amount of about 2 to about 2.3 equivalents, based on the amount of C15 salt to be reacted.
- Ammonia is particularly preferably used in an amount of from 2.1 to about 2.2 equivalents.
- the selected amount of ammonia can be introduced into the reaction mixture or the reaction solution in various forms.
- gaseous or liquid ammonia can be introduced into the reaction mixture or evaporated or dripped onto its surface.
- Ammonia is preferably added in the form of aqueous solutions, which can contain, for example, about 5 to about 20% by weight of ammonia. Preferred solutions contain about 9 to about 15 weight percent ammonia.
- a molar amount approximately equal to the amount of C15 salt to be reacted, ie about 0.9 to about 1.1 equivalents, of C5 acetate is added to the reaction mixture.
- the reagents are advantageously added in portions or continuously.
- reaction mixture can be stirred in the specified temperature range or, if appropriate, also at lower or higher temperatures.
- the reaction mixture can be worked up by methods known per se to the person skilled in the art, for example extractively.
- the method according to the invention is suitable for reactions on any scale. It can be carried out batchwise, semi-continuously or fully continuously with good success.
- the special efficiency of the process is particularly important for implementations on a technical scale.
- the semi-continuous or fully continuous design of the process steps offers clear advantages in terms of process technology as well as economically.
- all of the time data influenced thereby are understood, e.g. Response times, dosing times and the like as average times.
- 0.98 equivalents of triphenylphosphine are accordingly in a solvent mixture consisting of 66.5% by weight of methanol, 16.5% by weight of water and 17% by weight of heptane in a concentration of 32% by weight .-% submitted at 40 ° C with stirring and 1, 02 equivalents of about 75 wt .-% sulfuric acid added dropwise within about 1 h.
- 1.0 equivalents of? -Vinyl-ionol are added at about 50 ° C. and stirring is continued at about 50 ° C. until the reaction is complete.
- the work-up and isolation of the C15 salt obtained as a reaction product can be carried out in a manner known per se in the art.
- triphenylphosphine 139.7 g of triphenylphosphine were placed in a solvent mixture consisting of 206.8 g of methanol, 44.46 g of water and 40.68 g of heptane at 40 ° C. with stirring. 72.7 g of 75% sulfuric acid were added dropwise within 1 h. Subsequently, 130 g of? -Vinyl-lonol with a purity of 92.1% were metered in over the course of 2 h, the temperature was raised to 50 ° C. and the mixture was stirred for 4 h. After extractive work-up, C15 salt was obtained in a yield of 99.9% (based on triphenylphosphine used).
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10359433A DE10359433A1 (de) | 2003-12-17 | 2003-12-17 | Verfahren zur Herstellung von Vitamin A-Acetat |
PCT/EP2004/014209 WO2005058811A1 (de) | 2003-12-17 | 2004-12-14 | Verfahren zur herstellung von vitamin a- acetat |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1697317A1 true EP1697317A1 (de) | 2006-09-06 |
Family
ID=34683506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04803835A Withdrawn EP1697317A1 (de) | 2003-12-17 | 2004-12-14 | Verfahren zur herstellung von vitamin a- acetat |
Country Status (7)
Country | Link |
---|---|
US (2) | US20070082950A1 (de) |
EP (1) | EP1697317A1 (de) |
JP (1) | JP2007514681A (de) |
CN (1) | CN100455558C (de) |
CA (1) | CA2546307A1 (de) |
DE (1) | DE10359433A1 (de) |
WO (1) | WO2005058811A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2130833A1 (de) | 2008-06-05 | 2009-12-09 | DSM IP Assets B.V. | Verfahren zur Herstellung von Zeacarotinen |
CN103288875A (zh) * | 2013-05-24 | 2013-09-11 | 广州巨元生化有限公司 | 一种维生素a磷盐的制备方法 |
CN109517851B (zh) * | 2018-11-29 | 2021-03-02 | 厦门金达威维生素有限公司 | 一种维生素a醋酸酯的合成方法 |
CN109651150B (zh) * | 2018-12-20 | 2022-02-18 | 万华化学集团股份有限公司 | 一种制备维生素a醋酸酯的方法 |
CN111484524B (zh) * | 2019-01-25 | 2022-04-12 | 新发药业有限公司 | 一种维生素a乙酸酯中间体c15及维生素a乙酸酯的制备方法 |
CN113661160A (zh) * | 2019-04-15 | 2021-11-16 | 帝斯曼知识产权资产管理有限公司 | 新的烯醇乙酸酯 |
BR112021020443A2 (pt) * | 2019-04-15 | 2022-03-03 | Dsm Ip Assets Bv | Enol-acetatos(ii) |
CN111205209B (zh) * | 2020-03-05 | 2021-12-14 | 万华化学集团股份有限公司 | 一种多级连续串联反应萃取制备维生素a醋酸酯的装置及方法 |
CN112876395B (zh) * | 2021-01-15 | 2023-01-13 | 万华化学集团股份有限公司 | 一种维生素a醋酸酯的制备方法 |
WO2022241670A1 (zh) | 2021-05-19 | 2022-11-24 | 万华化学集团股份有限公司 | 一种c15膦盐的制备方法 |
CN113214126B (zh) * | 2021-05-19 | 2023-07-25 | 万华化学集团股份有限公司 | 一种维生素a醋酸酯的制备方法 |
CN113201016B (zh) * | 2021-05-19 | 2023-09-19 | 万华化学集团股份有限公司 | 一种c15膦盐的制备方法 |
WO2022241669A1 (zh) | 2021-05-19 | 2022-11-24 | 万华化学集团股份有限公司 | 一种维生素a醋酸酯的制备方法 |
CN114031534B (zh) * | 2021-11-19 | 2023-09-19 | 万华化学集团股份有限公司 | 一种高稳定性维生素a及其制备方法 |
CN115057886B (zh) * | 2022-06-20 | 2024-05-03 | 万华化学集团股份有限公司 | 一种c15膦盐的制备方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3006939A (en) * | 1957-01-17 | 1961-10-31 | Basf Ag | Production of compounds of the betacyclogeranylidene series |
NL124639C (de) * | 1963-05-24 | |||
US3932485A (en) * | 1974-08-28 | 1976-01-13 | Hoffmann-La Roche Inc. | Improved preparation of Wittig salt of vinyl β-ionol |
CH601219A5 (de) * | 1976-07-26 | 1978-06-30 | Hoffmann La Roche | |
DE2729974C3 (de) * | 1977-07-02 | 1981-09-24 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von wäßrigen Lösungen bzw. feinteiligen wäßrigen Dispersionen von Polyenyltriarylphosphoniumsalzen |
CA1101431A (en) * | 1977-06-18 | 1981-05-19 | Bernhard Schulz | Preparation of aqueous solutions or fine aqueous dispersions of polyenyltriarylphosphonium salts |
US4916250A (en) * | 1988-10-31 | 1990-04-10 | Loyola University Of Chicago | Phosphonate reagent compositions |
TW252974B (de) * | 1993-03-23 | 1995-08-01 | Takeda Dharm Industry Co Ltd | |
DE19517422A1 (de) * | 1995-05-12 | 1996-11-14 | Basf Ag | Verfahren zur Herstellung von beta-Carotin-Präparaten mit hohem 9(Z)-Gehalt |
IT1274494B (it) * | 1995-05-12 | 1997-07-17 | Lab Mag Spa | Procedimento fotochimico per la preparazione dell'acido 13-cis-retinoico |
DE19734446A1 (de) * | 1997-08-08 | 1999-02-11 | Basf Ag | Verfahren zur Herstellung von Phosphoniumsalzen |
DE10359434A1 (de) * | 2003-12-17 | 2005-07-21 | Basf Ag | Verfahren zur Herstellung von Phosphoniumsalzen |
-
2003
- 2003-12-17 DE DE10359433A patent/DE10359433A1/de not_active Withdrawn
-
2004
- 2004-12-14 CA CA002546307A patent/CA2546307A1/en not_active Abandoned
- 2004-12-14 US US10/580,958 patent/US20070082950A1/en not_active Abandoned
- 2004-12-14 CN CNB2004800376279A patent/CN100455558C/zh not_active Expired - Fee Related
- 2004-12-14 EP EP04803835A patent/EP1697317A1/de not_active Withdrawn
- 2004-12-14 JP JP2006544308A patent/JP2007514681A/ja not_active Ceased
- 2004-12-14 WO PCT/EP2004/014209 patent/WO2005058811A1/de active Application Filing
-
2008
- 2008-10-21 US US12/255,460 patent/US20090043121A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
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See references of WO2005058811A1 * |
Also Published As
Publication number | Publication date |
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DE10359433A1 (de) | 2005-07-21 |
WO2005058811A1 (de) | 2005-06-30 |
JP2007514681A (ja) | 2007-06-07 |
CN1894208A (zh) | 2007-01-10 |
CA2546307A1 (en) | 2005-06-30 |
US20070082950A1 (en) | 2007-04-12 |
US20090043121A1 (en) | 2009-02-12 |
CN100455558C (zh) | 2009-01-28 |
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