EP1680383A2 - Verfahren zur herstellung von phytofluen - Google Patents
Verfahren zur herstellung von phytofluenInfo
- Publication number
- EP1680383A2 EP1680383A2 EP04790438A EP04790438A EP1680383A2 EP 1680383 A2 EP1680383 A2 EP 1680383A2 EP 04790438 A EP04790438 A EP 04790438A EP 04790438 A EP04790438 A EP 04790438A EP 1680383 A2 EP1680383 A2 EP 1680383A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- formula
- acid
- aldehyde
- acetal
- independently
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims abstract description 24
- OVSVTCFNLSGAMM-UZFNGAIXSA-N phytofluene Chemical compound CC(C)=CCCC(C)=CCCC(C)=CCCC(C)=CC=C\C=C(/C)\C=C\C=C(C)CCC=C(C)CCC=C(C)C OVSVTCFNLSGAMM-UZFNGAIXSA-N 0.000 title claims abstract description 21
- ZIUDAKDLOLDEGU-UHFFFAOYSA-N trans-Phytofluen Natural products CC(C)=CCCC(C)CCCC(C)CC=CC(C)=CC=CC=C(C)C=CCC(C)CCCC(C)CCC=C(C)C ZIUDAKDLOLDEGU-UHFFFAOYSA-N 0.000 title claims abstract description 21
- OVSVTCFNLSGAMM-KGBODLQUSA-N cis-phytofluene Natural products CC(=CCCC(=CCCC(=CCCC(=CC=C/C=C(C)/C=C/C=C(C)/CCC=C(/C)CCC=C(C)C)C)C)C)C OVSVTCFNLSGAMM-KGBODLQUSA-N 0.000 title claims abstract description 16
- 235000002677 phytofluene Nutrition 0.000 title claims abstract description 16
- ZYSFBWMZMDHGOJ-SGKBLAECSA-N phytofluene Natural products CC(=CCCC(=CCCC(=CCCC(=CC=C/C=C(C)/CCC=C(/C)C=CC=C(/C)CCC=C(C)C)C)C)C)C ZYSFBWMZMDHGOJ-SGKBLAECSA-N 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract description 27
- 150000004714 phosphonium salts Chemical class 0.000 claims abstract description 22
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000007239 Wittig reaction Methods 0.000 claims abstract description 13
- 230000007062 hydrolysis Effects 0.000 claims abstract description 9
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 9
- 239000007859 condensation product Substances 0.000 claims abstract description 6
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims abstract 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 150000001450 anions Chemical class 0.000 claims description 11
- 150000007524 organic acids Chemical class 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 150000007522 mineralic acids Chemical class 0.000 claims description 9
- 125000001424 substituent group Chemical group 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- VDFVNEFVBPFDSB-UHFFFAOYSA-N 1,3-dioxane Chemical group C1COCOC1 VDFVNEFVBPFDSB-UHFFFAOYSA-N 0.000 claims description 6
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 6
- PXJNUPOCGBDYJJ-UHFFFAOYSA-N Phytofluen Natural products CC(CCCC(=CC=CC(=CC=CC=C(C)/CCC=C(/C)CCC=C(/C)CCC=C(C)C)C)C)CCC=C(C)C PXJNUPOCGBDYJJ-UHFFFAOYSA-N 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims 1
- 239000003377 acid catalyst Substances 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 15
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 14
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- -1 1- Methylpentyl Chemical group 0.000 description 13
- 150000001241 acetals Chemical class 0.000 description 12
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
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- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
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- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 239000005457 ice water Substances 0.000 description 4
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- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 3
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
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- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
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- 150000001747 carotenoids Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
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- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
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- WASNIKZYIWZQIP-AWEZNQCLSA-N nerolidol Natural products CC(=CCCC(=CCC[C@@H](O)C=C)C)C WASNIKZYIWZQIP-AWEZNQCLSA-N 0.000 description 3
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- 229910052700 potassium Inorganic materials 0.000 description 3
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- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- YVLPJIGOMTXXLP-UHFFFAOYSA-N 15-cis-phytoene Chemical compound CC(C)=CCCC(C)=CCCC(C)=CCCC(C)=CC=CC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)C YVLPJIGOMTXXLP-UHFFFAOYSA-N 0.000 description 2
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
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- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
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- CCCXGQLQJHWTLZ-UHFFFAOYSA-N geranyl linalool Natural products CC(=CCCC(=CCCCC(C)(O)CCC=C(C)C)C)C CCCXGQLQJHWTLZ-UHFFFAOYSA-N 0.000 description 2
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- ZCSHNCUQKCANBX-UHFFFAOYSA-N lithium diisopropylamide Chemical compound [Li+].CC(C)[N-]C(C)C ZCSHNCUQKCANBX-UHFFFAOYSA-N 0.000 description 2
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- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 2
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- CWHVATRDOJOHPG-CKLVJSNMSA-M triphenyl-[(2e,6e,10e)-3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraenyl]phosphanium;bromide Chemical compound [Br-].C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(C/C=C(C)/CC/C=C(C)/CC/C=C(C)/CCC=C(C)C)C1=CC=CC=C1 CWHVATRDOJOHPG-CKLVJSNMSA-M 0.000 description 2
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- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000006772 olefination reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- NHKJPPKXDNZFBJ-UHFFFAOYSA-N phenyllithium Chemical compound [Li]C1=CC=CC=C1 NHKJPPKXDNZFBJ-UHFFFAOYSA-N 0.000 description 1
- 235000011765 phytoene Nutrition 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- NTTOTNSKUYCDAV-UHFFFAOYSA-N potassium hydride Chemical compound [KH] NTTOTNSKUYCDAV-UHFFFAOYSA-N 0.000 description 1
- 229910000105 potassium hydride Inorganic materials 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 125000003548 sec-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ZCIHMQAPACOQHT-ZGMPDRQDSA-N trans-isorenieratene Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/c1c(C)ccc(C)c1C)C=CC=C(/C)C=Cc2c(C)ccc(C)c2C ZCIHMQAPACOQHT-ZGMPDRQDSA-N 0.000 description 1
- CMSYDJVRTHCWFP-UHFFFAOYSA-N triphenylphosphane;hydrobromide Chemical compound Br.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 CMSYDJVRTHCWFP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- BIWLELKAFXRPDE-XXKNMTJFSA-N zeta-Carotene Natural products C(=C\C=C\C=C(/C=C/C=C(\CC/C=C(\CC/C=C(\C)/C)/C)/C)\C)(\C=C\C=C(/CC/C=C(\CC/C=C(\C)/C)/C)\C)/C BIWLELKAFXRPDE-XXKNMTJFSA-N 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
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
- C07C45/60—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in six-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/32—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from compounds containing hetero-atoms other than or in addition to oxygen or halogen
- C07C1/34—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from compounds containing hetero-atoms other than or in addition to oxygen or halogen reacting phosphines with aldehydes or ketones, e.g. Wittig reaction
-
- 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
- C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
- C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
- C07C45/515—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups the singly bound functional group being an acetalised, ketalised hemi-acetalised, or hemi-ketalised hydroxyl group
-
- 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
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
- C07C45/59—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in five-membered rings
Definitions
- the present invention relates to a new process for the preparation of phytofluen (7,8,11,12,7 ', 8'-hexahydrolycopin) of the formula I.
- Phytofluen is a sought-after active ingredient for protecting the skin from damage caused by oxygen or UV radiation (described, inter alia, in WO 03/041678 and WO 00/13654).
- Phytofluen a precursor to the biogenesis of the carotenoid lycopene, can be isolated from natural sources. However, the availability of these sources is limited, and because phytofluene from other biogenetic precursors such as e.g. If phytoene or zeta-carotene is accompanied, it is also difficult to get to the pure active ingredient in this way.
- the strategy of choice is therefore total chemical synthesis.
- the synthetic challenge with phytofluene is its asymmetrical molecular structure (bond Cn-C ⁇ 2 is saturated; bond dv-C ⁇ is olefinic).
- nerolidol VII is converted into aldehyde VIII in two stages.
- the double bond Cn'-Ci 2 ' is then introduced by Wittig-Horner reaction of VIII with the phosphonate IX. This is followed by the reduction of the ester X to the alcohol XI and its reoxidation with manganese dioxide to the aldehyde V.
- R 1 is aryl and X "is the anion equivalent of an inorganic or organic acid, with an aldehyde of the formula III
- substituents R 2 and R 3 independently of one another are -CC 8 alkyl or together with the oxygen atoms and the carbon atom to which they are attached a 1, 3-dioxolane or 1,3-dioxane ring of the following Can form structures
- R 4 and R 5 and R 6 can each independently be hydrogen or C 1 -C 4 -alkyl
- R 7 is aryl and Y "is the anion equivalent of an inorganic or organic acid, condensed to phytofluene.
- the alkyl radicals for R 2 and R 3 are linear or branched d-Cs-alkyl chains, for example methyl, ethyl, n-propyl, 1-methylethyl, n-butyl, 1-methylpropyl, 2-methylpropyl, 1, 1-dimethylethyl, n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, n-hexyl, 1,1- dimethylpropyl, 1,2-dimethylpropyl, 1- Methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1, 1-dimethylbutyl, 1, 2-dimethylbutyl, 1, 3-dimethylbutyl, 2,2-dimethylbutyl, 2,3-dimethylbutyl, 3,3- Dimethylbutyl, 1-ethyl, n-propyl, 1-methyl
- Preferred alkyl radicals for R 2 and R 3 are methyl, ethyl, n-propyl and 1-methylethyl, particularly preferably methyl and ethyl.
- Linear or branched C 1 -C 4 -alkyl chains for example methyl, ethyl, n-propyl, 1-methylethyl, n-butyl, 1-methylpropyl, 2-methylpropyl and 1, 1-dimethylethyl, may be mentioned as alkyl radicals for R 4 to R 6 ,
- Preferred radicals for R 4 to R 6 are hydrogen and methyl.
- aryl for R 1 and R 7 denotes customary aryl residues occurring in phosphonium salts, such as phenyl, toluene, naphthyl, optionally substituted in each case, preferably phenyl.
- radicals X " and Y " stand for an anion equivalent of an inorganic or organic acid, preferably a strong inorganic or organic acid.
- strong acid includes hydrohalic acids (especially hydrochloric acid and hydrobromic acid), sulfuric acid, phosphoric acid, sulfonic acids and other inorganic or organic acids with a comparable degree of dissociation.
- strong organic acids are also to be understood as d-Ce alkanoic acids such as formic acid, acetic acid, propionic acid, butyric acid and caproic acid.
- the first step a) of the process according to the invention comprises the olefination reaction of a phosphonium salt of the general formula II with a C 5 -acetal aldehyde of the general formula III,
- the condensation of II with III can, for example, in an inert organic solvent e.g. in open-chain or cyclic ethers such as diethyl ether, diisopropyl ether, methyl tert-butyl ether, 1,4-dioxane or THF, in halogenated hydrocarbons such as dichloromethane, chloroform, in aromatic hydrocarbons such as toluene, xylene or benzene or in polar solvents such as dimethylformamide, dimethyl sulfoxide or Acetonitrile can be carried out.
- Preferred solvents are diethyl ether, toluene, THF and DMSO or mixtures thereof.
- All bases customary for such condensation can be used as the base, e.g. Alkali metal hydroxides such as sodium hydroxide, potassium hydroxide or lithium hydroxide; Alkali metal hydrides such as sodium hydride or potassium hydride.
- Lithium organyls such as e.g. n-butyllithium, tert. Butyl lithium, phenyllithium or alkali metal amides such as lithium, potassium or sodium amide, lithium diisopropyl amide but also alkali metal hexamethyl disilazide in question.
- the preferred base for the Wittig reaction according to the invention is sodium or potassium hexamethyldisiiazide, n-butyllithium and potassium or sodium amide.
- the amount of base used is generally in the range from 0.8 to 5 mol, preferably 1 to 3 mol, per mol of the phosphonium salt II used. If X 'is a halide anion, oxiranes can also advantageously be used as latent bases (see Chem. Ber. 1974, 107, 2050).
- Lithium organyls in hexane or solutions of alkali metal alcoholates in the corresponding alcohol or oxiranes, especially 1, 2-epoxy butane, are preferably used as bases for this Wittig reaction, without additional solvent or in a mixture with one of the abovementioned solvents or a lower alkanol.
- a preferred embodiment of process step a) is characterized in that the bromide of the formula IIa is used as the phosphonium salt
- substituents R 4 and R 5 independently of one another denote hydrogen and / or methyl, preferably in each case together hydrogen or methyl, particularly preferably together methyl.
- Aldehydes of the type IM are known as building blocks for technical polyene synthesis ("Carotenoids”, Vol. 2, “Synthesis”, p. 125 f .; Birkhäuser Verlag, 1996, and literature cited there).
- step b) of the process according to the invention the acetal group in IV or IVa is hydrolyzed to the aldehyde function V.
- acetal cleavage e.g. B. with dilute mineral acids such as sulfuric acid. It has proven particularly suitable to catalyze the hydrolysis of the acetal function with citric acid.
- the citric acid is advantageously used in an amount of 5 to 50 mol%, preferably 20 to 30 mol%, based on the Compound of formula IV or Iva used.
- the hydrolysis is preferably carried out in aqueous media, in particular in a mixture of water with a water-miscible organic solvent, such as CC 4 alkanols, for example methanol, ethanol or isopropanol, preferably ethanol, at a temperature of suitably 0 ° C. to the boiling point of the solvent, preferably 25 ° C to 55 ° C.
- a water-miscible organic solvent such as CC 4 alkanols, for example methanol, ethanol or isopropanol, preferably ethanol
- Geranylgeranyltriphenylphosphonium bromide of the formula Via is used as the preferred phosphonium salt VI
- the invention also relates to a process for the preparation of the C 20 aldehyde of the formula V,
- R 1 is aryl and X 'is the anion equivalent of an inorganic or organic acid, with an aldehyde of the formula III
- substituents R 2 and R 3 independently of one another represent d-Cs-alkyl or together with the oxygen atoms and the carbon atom to which they are attached form a 1, 3-dioxolane or 1, 3-dioxane ring of the following structures can,
- R 4 and R 5 and R 6 can each independently of one another denote hydrogen or dC 4 alkyl
- the invention also relates to acetals of the general formula IV,
- R 2 and R 3 independently of one another are -C 8 -alkyl or together with the oxygen atoms and the carbon atom to which they are attached a 1, 3-dioxolane or 1, 3-dioxane ring of the following Can form structures in which R 4 and R 5 and R 6 can each independently be hydrogen or C 1 -C 4 -alkyl,
- the two organic phases were combined, washed with 40 ml of saturated sodium chloride solution and dried together with the first organic phase over sodium sulfate.
- the solvent was distilled off on a rotary evaporator at 50 ° C. to 20 mbar.
- the mixture was then hydrolyzed by the dropwise addition of 150 ml of ice water, and the organic upper phase was separated off, washed twice with 150 ml of ice water each time and transferred Dried sodium sulfate and evaporated on a rotary evaporator at 50 ° C to 20 mbar.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10349983A DE10349983A1 (de) | 2003-10-24 | 2003-10-24 | Verfahren zur Herstellung von Phytofluen |
| PCT/EP2004/011582 WO2005042446A2 (de) | 2003-10-24 | 2004-10-15 | Verfahren zur herstellung von phytofluen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1680383A2 true EP1680383A2 (de) | 2006-07-19 |
Family
ID=34485086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04790438A Withdrawn EP1680383A2 (de) | 2003-10-24 | 2004-10-15 | Verfahren zur herstellung von phytofluen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7271296B2 (de) |
| EP (1) | EP1680383A2 (de) |
| JP (1) | JP2007512235A (de) |
| CN (1) | CN101035748A (de) |
| CA (1) | CA2542052A1 (de) |
| DE (1) | DE10349983A1 (de) |
| WO (1) | WO2005042446A2 (de) |
Families Citing this family (3)
| 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 |
| JP5803031B2 (ja) * | 2010-10-01 | 2015-11-04 | ディーエスエム アイピー アセッツ ビー.ブイ. | ペレチノインの向上した合成 |
| MX2021002549A (es) * | 2018-12-19 | 2021-04-29 | Firmenich & Cie | Proceso para la preparacion de ciclopentanonas cis-alfa,beta sustituidas. |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4482582A (en) * | 1982-09-03 | 1984-11-13 | Morey Weisman | Modified polyurethane product having improved load bearing characteristics |
| NZ222563A (en) | 1986-11-19 | 1990-08-28 | Bp Chem Int Ltd | Polyurethane froth foams |
| GB8627658D0 (en) * | 1986-11-19 | 1986-12-17 | Bp Chem Int Ltd | Polyurethane froth foams |
| US4810729A (en) | 1987-10-23 | 1989-03-07 | Basf Corporation | Flexible flame resistant polyurethane foams |
| TW482783B (en) | 1997-08-19 | 2002-04-11 | Mitsui Chemicals Inc | Flexible polyurethane foam with high durability |
| IL126076A (en) | 1998-09-04 | 2005-05-17 | Ibr Ltd | Transparent composition comprising phytoene and phytofluene |
| DE10111823A1 (de) * | 2001-03-13 | 2002-09-26 | Basf Ag | Verfahren zur Herstellung von Polyurethan-Weichschaumstoffen |
| IL146496A0 (en) | 2001-11-14 | 2002-07-25 | Lycored Natural Prod Ind Ltd | Carotenoid composition and method for protecting skin |
-
2003
- 2003-10-24 DE DE10349983A patent/DE10349983A1/de not_active Withdrawn
-
2004
- 2004-10-15 EP EP04790438A patent/EP1680383A2/de not_active Withdrawn
- 2004-10-15 WO PCT/EP2004/011582 patent/WO2005042446A2/de not_active Ceased
- 2004-10-15 US US10/595,503 patent/US7271296B2/en not_active Expired - Fee Related
- 2004-10-15 CA CA002542052A patent/CA2542052A1/en not_active Abandoned
- 2004-10-15 CN CNA2004800313388A patent/CN101035748A/zh active Pending
- 2004-10-15 JP JP2006536009A patent/JP2007512235A/ja not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005042446A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005042446A2 (de) | 2005-05-12 |
| DE10349983A1 (de) | 2005-05-25 |
| CA2542052A1 (en) | 2005-05-12 |
| US7271296B2 (en) | 2007-09-18 |
| CN101035748A (zh) | 2007-09-12 |
| WO2005042446A3 (de) | 2007-03-15 |
| JP2007512235A (ja) | 2007-05-17 |
| US20070004925A1 (en) | 2007-01-04 |
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