WO1992000266A1 - Procede d'aldolisation de composes contenant des atomes d'hydrogene actifs - Google Patents
Procede d'aldolisation de composes contenant des atomes d'hydrogene actifs Download PDFInfo
- Publication number
- WO1992000266A1 WO1992000266A1 PCT/EP1991/001140 EP9101140W WO9200266A1 WO 1992000266 A1 WO1992000266 A1 WO 1992000266A1 EP 9101140 W EP9101140 W EP 9101140W WO 9200266 A1 WO9200266 A1 WO 9200266A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reaction
- compounds
- water
- active hydrogen
- hydrogen atoms
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 150000001875 compounds Chemical class 0.000 title claims description 13
- 125000004435 hydrogen atom Chemical group [H]* 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 150000004679 hydroxides Chemical class 0.000 claims abstract description 12
- 238000002425 crystallisation Methods 0.000 claims abstract description 9
- 230000008025 crystallization Effects 0.000 claims abstract description 9
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 15
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 15
- 229960001545 hydrotalcite Drugs 0.000 claims description 15
- 150000001768 cations Chemical class 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 8
- 150000001450 anions Chemical class 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- -1 hydrogen atoms fatty aldehydes Chemical class 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 150000007519 polyprotic acids Polymers 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 150000007942 carboxylates Chemical class 0.000 claims description 2
- 150000001991 dicarboxylic acids Chemical group 0.000 claims description 2
- 150000002763 monocarboxylic acids Chemical group 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229930195734 saturated hydrocarbon Natural products 0.000 claims description 2
- 229930195735 unsaturated hydrocarbon Natural products 0.000 claims description 2
- MYLBTCQBKAKUTJ-UHFFFAOYSA-N 7-methyl-6,8-bis(methylsulfanyl)pyrrolo[1,2-a]pyrazine Chemical compound C1=CN=CC2=C(SC)C(C)=C(SC)N21 MYLBTCQBKAKUTJ-UHFFFAOYSA-N 0.000 claims 1
- 238000005882 aldol condensation reaction Methods 0.000 abstract description 14
- 150000002192 fatty aldehydes Chemical class 0.000 abstract description 8
- HSJKGGMUJITCBW-UHFFFAOYSA-N 3-hydroxybutanal Chemical compound CC(O)CC=O HSJKGGMUJITCBW-UHFFFAOYSA-N 0.000 description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 9
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 8
- KSMVZQYAVGTKIV-UHFFFAOYSA-N decanal Chemical compound CCCCCCCCCC=O KSMVZQYAVGTKIV-UHFFFAOYSA-N 0.000 description 6
- HFJRKMMYBMWEAD-UHFFFAOYSA-N dodecanal Chemical compound CCCCCCCCCCCC=O HFJRKMMYBMWEAD-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- NIOYUNMRJMEDGI-UHFFFAOYSA-N hexadecanal Chemical compound CCCCCCCCCCCCCCCC=O NIOYUNMRJMEDGI-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000005639 Lauric acid Substances 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 229910052599 brucite Inorganic materials 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- JARKCYVAAOWBJS-UHFFFAOYSA-N hexanal Chemical compound CCCCCC=O JARKCYVAAOWBJS-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- FWWQKRXKHIRPJY-UHFFFAOYSA-N octadecanal Chemical compound CCCCCCCCCCCCCCCCCC=O FWWQKRXKHIRPJY-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 208000031968 Cadaver Diseases 0.000 description 1
- 241000252095 Congridae Species 0.000 description 1
- 208000003164 Diplopia Diseases 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 208000029444 double vision Diseases 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007037 hydroformylation reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
- C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
- C07C45/72—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups
- C07C45/74—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups combined with dehydration
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/007—Mixed salts
Definitions
- the invention relates to a process for the aldolization of compounds with active hydrogen atoms in the presence of double layer hydroxides.
- the aldolization of fatty aldehydes is a long-known technical process for the production of alpha, beta-unsaturated, higher molecular weight aldehydes which hydrogenate to the corresponding alcohols and as raw materials, for. B. can be used for the production of surfactants [Actes Congr. Moon., Soc. Int. Etude Corporation Gras, 13th Vol. Sect.C, 45-50, 1976].
- the aldol condensation is carried out in the presence of basic catalysts, which can be both homogeneous and heterogeneous in nature.
- the object of the invention was therefore an improved
- the invention relates to a process for the aldolization of compounds with active hydrogen atoms, characterized in that the reaction is carried out in the presence of double-layer hydroxides containing water of crystallization under azeotropic conditions.
- the invention is based on the knowledge that water-crystal, ie. H. Non-calcined double-layer hydroxides are suitable as catalysts for the aldol condensation if the crystal water is separated off together with the reaction water released during the condensation in the presence of an entrainer via a water separator.
- Suitable compounds with active hydrogen atoms which are suitable for aldol condensation are ketones, such as, for example, acetone or methyl ethyl ketone, but especially fatty aldehydes of the formula (I), -CHO (I)
- R represents a saturated or unsaturated hydrocarbon radical having 6 to 22 carbon atoms and 0, 1, 2 or 3 double bonds.
- Fatty aldehydes are known chemical compounds which are accessible by the usual methods of preparative organic chemistry.
- a process for their preparation consists, for example, of oxidizing fatty alcohols in the presence of 4-methoxy-2,2,6,6-tetramethylpiperidin-1-yloxyl (TEMPO) [J.Am.Chem.
- Typical examples of fatty aldehydes which can be subjected to aldol condensation in the sense of the invention are hexanal, decanal, dodecanal, hexadecanal or octadecanal. Saturated fatty aldehydes having 8 to 16 carbon atoms are preferably used. As usual in fat chemistry, the fatty aldehydes can also be present as technical mixtures, such as those found in B. in the oxidation of fatty alcohols based on natural raw materials. Technical aldehyde fractions which are accessible via the hydroformylation of olefins are also suitable.
- Double-layer hydroxides are to be understood as cationic layer compounds which are structurally derived from brucite [Mg (0H) 2] and crystallize in a layer structure with the metal ions in octahedral gaps between two layers of densely packed hydroxide ions, of which only every second layer of the octahedron gaps are occupied [Chimia, 24, 99 (1970)]. Chemically they are mixed basic hydroxy salts of di- and trivalent metal cations and follow the formula (II), [H II ⁇ _ x MlII ⁇ (0H) 2 A y • m H 2 0 (II)
- M * l stands for at least one divalent metal cation
- M 111 for at least one trivalent metal cation
- A for the equivalent of an anion of a mono- or polybasic acid
- Possible divalent metal ions M 11 are cations selected from the group formed by Mg 2+ , Ca 2+ , Mn2 + , Zn 2+ and Cu 2+ ;
- Examples of trivalent metal ions M 111 are cations selected from the group formed by Al3 + f Fe3 + and Cr3 + .
- Anions selected from the group formed by carbonate, carboxylate, chloride, nitrate, sulfate or phosphate are considered for A as the equivalent for the anion of a mono- or polybasic acid.
- Typical examples of double-vision hydroxides which can be used as catalysts for the aldol condensation in the process according to the invention are, for example
- hydrotalcite of the formula (III) is used as the double-layer hydroxide
- hydrophobic double-layer hydroxides in particular hydrophobic hydrotalcite
- hydrophobic double-layer hydroxides are used as catalysts in the aldol condensation.
- the preparation of the hydrophobic double-layer hydroxides can, for. B. by reaction of natural or synthetic double-layer hydroxides, in particular hydrotalcite, in the presence or absence of solvents with C 2 -C 22 mono- or dicarboxylic acids, in particular lauric acid.
- Hydrotalcite is a known chemical compound which is found both as a natural mineral and synthetically by the relevant methods of preparative inorganic chemistry [DE-A-1592 126; DE-B-3306822; DE-A-3346 943] is accessible.
- Optimal conditions for the aldol condensation are temperatures of 100 to 150, in particular 120 to 130 ° C.
- the reaction is usually carried out over a period of 1 to 10, in particular 3 to 7 hours.
- reaction mixture After completion of the reaction, the reaction mixture is cooled and the catalyst z. B. separated by filtration. After drying, it can be returned to the aldolization.
- the alpha, beta-unsaturated aldehydes obtained in the aldol condensation can be hydrogenated to the branched alcohols by methods known per se and then used as raw materials for the production of surface-active agents or lubricants.
- Example 1 was repeated with 3 g of hydrotalcite which had previously been calcined at 500 ° C. for 12 h. 80 g of a colorless, clear liquid were obtained, the gas chromatographically determined content of aldol condensate being 61% by weight.
- Example 1 Aldol condensation from Decanal.
- Example 1 was repeated using 87 g (0.54 mol) of decanal.
- 77 g of a colorless, clear liquid were obtained, the gas chromatographically determined content of aldol condensate being 69% by weight.
- Example 1 Aldol condensation of hexadecanal.
- Example 1 was repeated using 115 g (0.54 mol) of hexadecanal and 4.5 g of hydrotalcite. 100 g of a colorless pasty liquid were obtained, the gas chromatographically determined content of aldol condensate being 62% by weight.
- Example 1 was repeated using 3 g of the hydrotalcite from Example 4 which had been hydrophobicized with lauric acid. Within 4.5 hours, 89 g of a colorless, clear liquid were obtained, the gas chromatographically determined content of aldol condensate being 68% by weight.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
On peut soumettre des aldéhydes gras à une condensation d'aldol en présence d'hydroxydes à double couche contenant de l'eau de cristallisation après avoir éliminé l'eau de cristallisation et de réaction dans des conditions azéotropes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904020838 DE4020838A1 (de) | 1990-06-29 | 1990-06-29 | Verfahren zur aldolisierung von verbindungen mit aktiven wasserstoffatomen |
DEP4020838.9 | 1990-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992000266A1 true WO1992000266A1 (fr) | 1992-01-09 |
Family
ID=6409397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1991/001140 WO1992000266A1 (fr) | 1990-06-29 | 1991-06-20 | Procede d'aldolisation de composes contenant des atomes d'hydrogene actifs |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0536193A1 (fr) |
DE (1) | DE4020838A1 (fr) |
WO (1) | WO1992000266A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0792862A1 (fr) * | 1996-02-29 | 1997-09-03 | Elf Atochem S.A. | Procédé d'obtention de composés carbonyles beta hydroxy et/ou -beta insaturés |
EP0792863A1 (fr) * | 1996-02-29 | 1997-09-03 | Elf Atochem S.A. | Procédé d'obtention d'isophorone |
EP0921110A1 (fr) * | 1997-12-05 | 1999-06-09 | Elf Atochem S.A. | Utilisation de composés de structure de type hydrotalcite pour la préparation de composés carbonyles-bèta-hydroxy et/ou alpha-bèta insaturés |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1203243B (de) * | 1961-12-22 | 1965-10-21 | Exxon Research Engineering Co | Verfahren zur Herstellung von alpha, beta-ungesaettigten Aldehyden und Ketonen |
DE2705857A1 (de) * | 1976-02-12 | 1977-08-25 | Union Carbide Corp | Katalysator und dessen verwendung fuer die durchfuehrung der aldol-kondensation |
GB2048239A (en) * | 1979-05-01 | 1980-12-10 | Turner W F | Production of unsaturated carbonyl compounds |
US4316990A (en) * | 1980-10-29 | 1982-02-23 | Eastman Kodak Company | Preparation of α,β-aldehydes by aldol condensation |
EP0095783A2 (fr) * | 1982-06-02 | 1983-12-07 | Union Carbide Corporation | Condensations aldoliques catalysées |
US4528405A (en) * | 1983-12-30 | 1985-07-09 | Union Carbide Corporation | Aldol condensation of enolizable aldehydes using a metal carboxylate catalyst |
-
1990
- 1990-06-29 DE DE19904020838 patent/DE4020838A1/de not_active Withdrawn
-
1991
- 1991-06-20 WO PCT/EP1991/001140 patent/WO1992000266A1/fr not_active Application Discontinuation
- 1991-06-20 EP EP19910911249 patent/EP0536193A1/fr not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1203243B (de) * | 1961-12-22 | 1965-10-21 | Exxon Research Engineering Co | Verfahren zur Herstellung von alpha, beta-ungesaettigten Aldehyden und Ketonen |
DE2705857A1 (de) * | 1976-02-12 | 1977-08-25 | Union Carbide Corp | Katalysator und dessen verwendung fuer die durchfuehrung der aldol-kondensation |
GB2048239A (en) * | 1979-05-01 | 1980-12-10 | Turner W F | Production of unsaturated carbonyl compounds |
US4316990A (en) * | 1980-10-29 | 1982-02-23 | Eastman Kodak Company | Preparation of α,β-aldehydes by aldol condensation |
EP0095783A2 (fr) * | 1982-06-02 | 1983-12-07 | Union Carbide Corporation | Condensations aldoliques catalysées |
US4528405A (en) * | 1983-12-30 | 1985-07-09 | Union Carbide Corporation | Aldol condensation of enolizable aldehydes using a metal carboxylate catalyst |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0792862A1 (fr) * | 1996-02-29 | 1997-09-03 | Elf Atochem S.A. | Procédé d'obtention de composés carbonyles beta hydroxy et/ou -beta insaturés |
EP0792863A1 (fr) * | 1996-02-29 | 1997-09-03 | Elf Atochem S.A. | Procédé d'obtention d'isophorone |
FR2745565A1 (fr) * | 1996-02-29 | 1997-09-05 | Atochem Elf Sa | Procede d'obtention de composes carbonyles beta hydroxy et/ou alpha-beta insatures |
FR2745566A1 (fr) * | 1996-02-29 | 1997-09-05 | Atochem Elf Sa | Procede d'obtention d'isophorone |
US5849957A (en) * | 1996-02-29 | 1998-12-15 | Elf Atochem S.A. | Process for obtaining isophorone |
US5936131A (en) * | 1996-02-29 | 1999-08-10 | Elf Atochem S,A | Process for obtaining β-hydroxy and/or α,β-unsaturated carbonyl compounds |
CN1065232C (zh) * | 1996-02-29 | 2001-05-02 | 埃尔夫阿托化学有限公司 | 制备异佛尔酮(3,5,5-三甲基-2-环己烯-1-酮)的方法 |
CN1065229C (zh) * | 1996-02-29 | 2001-05-02 | 埃尔夫阿托化学有限公司 | 制备β-羟基和/或α,β-不饱和羰基化合物的方法 |
US6271171B1 (en) | 1996-02-29 | 2001-08-07 | Elf Atochem S.A. | Catalyst for obtaining β-hydroxy and/or α,β-unsaturated carbonyl compounds |
EP0921110A1 (fr) * | 1997-12-05 | 1999-06-09 | Elf Atochem S.A. | Utilisation de composés de structure de type hydrotalcite pour la préparation de composés carbonyles-bèta-hydroxy et/ou alpha-bèta insaturés |
FR2772024A1 (fr) * | 1997-12-05 | 1999-06-11 | Atochem Elf Sa | Utilisation de composes de structure de type hydrotalcite pour la preparation de composes carbonyles-beta-hydroxy et/ou alpha-beta-insatures |
US6046366A (en) * | 1997-12-05 | 2000-04-04 | Elf Atochem S.A. | Preparation of β-hydroxycarbonyl and/or α,β-unsaturated carbonyl compounds |
Also Published As
Publication number | Publication date |
---|---|
DE4020838A1 (de) | 1992-01-02 |
EP0536193A1 (fr) | 1993-04-14 |
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