DE3618643A1 - Verfahren zum herstellen von 2,6-naphthalindiol, und 2,6 diacetoxynaphthalin - Google Patents
Verfahren zum herstellen von 2,6-naphthalindiol, und 2,6 diacetoxynaphthalinInfo
- Publication number
- DE3618643A1 DE3618643A1 DE19863618643 DE3618643A DE3618643A1 DE 3618643 A1 DE3618643 A1 DE 3618643A1 DE 19863618643 DE19863618643 DE 19863618643 DE 3618643 A DE3618643 A DE 3618643A DE 3618643 A1 DE3618643 A1 DE 3618643A1
- Authority
- DE
- Germany
- Prior art keywords
- naphthalenediol
- acid
- mixture
- naphthalene
- propyl
- 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.)
- Granted
Links
- MNZMMCVIXORAQL-UHFFFAOYSA-N naphthalene-2,6-diol Chemical compound C1=C(O)C=CC2=CC(O)=CC=C21 MNZMMCVIXORAQL-UHFFFAOYSA-N 0.000 title claims description 68
- JTUIDPCUTRXCPW-UHFFFAOYSA-N (6-acetyloxynaphthalen-2-yl) acetate Chemical compound C1=C(OC(C)=O)C=CC2=CC(OC(=O)C)=CC=C21 JTUIDPCUTRXCPW-UHFFFAOYSA-N 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title description 12
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 89
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 45
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 44
- 239000000203 mixture Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 35
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 33
- 150000007522 mineralic acids Chemical class 0.000 claims description 13
- DXIUSVDANCIIAR-UHFFFAOYSA-N 2-[6-(2-hydroxypropan-2-yl)naphthalen-2-yl]propan-2-ol Chemical compound C1=C(C(C)(C)O)C=CC2=CC(C(C)(O)C)=CC=C21 DXIUSVDANCIIAR-UHFFFAOYSA-N 0.000 claims description 11
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000011973 solid acid Substances 0.000 claims description 8
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 7
- 230000021736 acetylation Effects 0.000 claims description 6
- 238000006640 acetylation reaction Methods 0.000 claims description 6
- -1 2-hydroxy-2-propyl Chemical group 0.000 claims description 3
- 239000003456 ion exchange resin Substances 0.000 claims description 2
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims 1
- AALSLNDNKLOORP-UHFFFAOYSA-N perchloric acid sulfuric acid Chemical compound OS(O)(=O)=O.OCl(=O)(=O)=O AALSLNDNKLOORP-UHFFFAOYSA-N 0.000 claims 1
- 150000002978 peroxides Chemical class 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 37
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 26
- 239000002904 solvent Substances 0.000 description 19
- 239000011541 reaction mixture Substances 0.000 description 17
- 239000000243 solution Substances 0.000 description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 239000010410 layer Substances 0.000 description 9
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 238000004128 high performance liquid chromatography Methods 0.000 description 7
- 239000012044 organic layer Substances 0.000 description 7
- 239000000725 suspension Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 6
- 239000007858 starting material Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- GWLLTEXUIOFAFE-UHFFFAOYSA-N 2,6-diisopropylnaphthalene Chemical compound C1=C(C(C)C)C=CC2=CC(C(C)C)=CC=C21 GWLLTEXUIOFAFE-UHFFFAOYSA-N 0.000 description 4
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 4
- 229920000106 Liquid crystal polymer Polymers 0.000 description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 239000012452 mother liquor Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- BDCFWIDZNLCTMF-UHFFFAOYSA-N 2-phenylpropan-2-ol Chemical compound CC(C)(O)C1=CC=CC=C1 BDCFWIDZNLCTMF-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000004817 gas chromatography Methods 0.000 description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-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
- 230000000397 acetylating effect Effects 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 229920001429 chelating resin Polymers 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002790 naphthalenes Chemical class 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- AFPSJXJNWUOEGK-UHFFFAOYSA-N 2,6-bis(2-hydroperoxypropan-2-yl)naphthalene Chemical compound C1=C(C(C)(C)OO)C=CC2=CC(C(C)(OO)C)=CC=C21 AFPSJXJNWUOEGK-UHFFFAOYSA-N 0.000 description 1
- YFTPFMCYSXCTRZ-UHFFFAOYSA-N 2-[1-(2-hydroxypropan-2-yl)naphthalen-2-yl]propan-2-ol Chemical compound C1=CC=CC2=C(C(C)(C)O)C(C(C)(O)C)=CC=C21 YFTPFMCYSXCTRZ-UHFFFAOYSA-N 0.000 description 1
- DHNGJKZWBBDBKJ-UHFFFAOYSA-N 2-[4-(2-hydroperoxypropan-2-yl)phenyl]propan-2-ol Chemical compound CC(C)(O)C1=CC=C(C(C)(C)OO)C=C1 DHNGJKZWBBDBKJ-UHFFFAOYSA-N 0.000 description 1
- LEARFTRDZQQTDN-UHFFFAOYSA-N 2-[4-(2-hydroxypropan-2-yl)phenyl]propan-2-ol Chemical compound CC(C)(O)C1=CC=C(C(C)(C)O)C=C1 LEARFTRDZQQTDN-UHFFFAOYSA-N 0.000 description 1
- 102100027324 2-hydroxyacyl-CoA lyase 1 Human genes 0.000 description 1
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- 229910014033 C-OH Inorganic materials 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910014570 C—OH Inorganic materials 0.000 description 1
- 101001009252 Homo sapiens 2-hydroxyacyl-CoA lyase 1 Proteins 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- MNIGYIKCFSPQRJ-UHFFFAOYSA-N N,N-bis(2-hydroxypropyl)nitrosamine Chemical compound CC(O)CN(N=O)CC(C)O MNIGYIKCFSPQRJ-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010543 cumene process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- NXPPAOGUKPJVDI-UHFFFAOYSA-N naphthalene-1,2-diol Chemical class C1=CC=CC2=C(O)C(O)=CC=C21 NXPPAOGUKPJVDI-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 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
- 230000035484 reaction time Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/08—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by decomposition of hydroperoxides, e.g. cumene hydroperoxide
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/50—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/14—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with at least one hydroxy group on a condensed ring system containing two rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60123819A JPS61282333A (ja) | 1985-06-07 | 1985-06-07 | 2,6−ナフタレンジオ−ルの製造方法 |
JP60208372A JPH06719B2 (ja) | 1985-09-20 | 1985-09-20 | 高純度な2,6−ジアセトキシナフタレンの製造法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3618643A1 true DE3618643A1 (de) | 1986-12-11 |
DE3618643C2 DE3618643C2 (en, 2012) | 1988-07-07 |
Family
ID=26460637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19863618643 Granted DE3618643A1 (de) | 1985-06-07 | 1986-06-03 | Verfahren zum herstellen von 2,6-naphthalindiol, und 2,6 diacetoxynaphthalin |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE3618643A1 (en, 2012) |
FR (1) | FR2583040B1 (en, 2012) |
GB (1) | GB2176188B (en, 2012) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3722796A1 (de) * | 1986-07-15 | 1988-01-28 | Kureha Chemical Ind Co Ltd | Verfahren zum herstellen von 2,6-dihydroxynaphthalin |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4783557A (en) * | 1986-09-12 | 1988-11-08 | Mitsui Petrochemical Industries, Ltd. | Processes for preparing hydroxynaphthalenes |
JPS63310839A (ja) * | 1987-06-12 | 1988-12-19 | Mitsui Petrochem Ind Ltd | ヒドロキシナフタレンの製造方法 |
JPS63119432A (ja) * | 1986-11-07 | 1988-05-24 | Kureha Chem Ind Co Ltd | 4,4′−ジヒドロキシビフエニルの製造方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB910735A (en) * | 1960-09-17 | 1962-11-21 | Distillers Co Yeast Ltd | Production of hydroquinone |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6024788B2 (ja) * | 1978-10-17 | 1985-06-14 | 三井化学株式会社 | 芳香族ヒドロペルオキシドの製造方法 |
JPS61100558A (ja) * | 1984-10-22 | 1986-05-19 | Mitsui Petrochem Ind Ltd | 2,6−ジイソプロピルナフタレンの酸化方法 |
-
1986
- 1986-06-03 DE DE19863618643 patent/DE3618643A1/de active Granted
- 1986-06-06 FR FR868608222A patent/FR2583040B1/fr not_active Expired
- 1986-06-06 GB GB8613759A patent/GB2176188B/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB910735A (en) * | 1960-09-17 | 1962-11-21 | Distillers Co Yeast Ltd | Production of hydroquinone |
Non-Patent Citations (4)
Title |
---|
Houben-Wegl, Methoden der Organischen Chemie, Bd. 6/1c, 1976, S. 133-4 * |
I. Chem. Soc. Japan 1959, Bd. 80, S. 689 * |
I. Indian Chem. Soc. 1966, Bd. 43, S. 437 * |
I. Org. Chem. 1950, Bd. 15, S. 748 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3722796A1 (de) * | 1986-07-15 | 1988-01-28 | Kureha Chemical Ind Co Ltd | Verfahren zum herstellen von 2,6-dihydroxynaphthalin |
Also Published As
Publication number | Publication date |
---|---|
FR2583040B1 (fr) | 1989-09-15 |
FR2583040A1 (fr) | 1986-12-12 |
GB8613759D0 (en) | 1986-07-09 |
DE3618643C2 (en, 2012) | 1988-07-07 |
GB2176188B (en) | 1989-07-05 |
GB2176188A (en) | 1986-12-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2721255A1 (de) | Verfahren zur herstellung von terephthalsaeure, ausgehend von dikaliumterephthalat in einer einstufigen durchfuehrung | |
EP0026318A1 (de) | Verfahren zur Herstellung reiner 4,4'-Dihydroxydiphenylalkane bzw. -cycloalkane | |
DE3109339C2 (de) | Verfahren zur Herstellung von Resorcin | |
DE2115551A1 (en, 2012) | ||
DE3109442C2 (de) | Verfahren zur Herstellung von Resorcin | |
DE3618643A1 (de) | Verfahren zum herstellen von 2,6-naphthalindiol, und 2,6 diacetoxynaphthalin | |
DE3519552A1 (de) | Verfahren zur herstellung von 4,4'-dinitrostilben-2,2'-disulfonsaeuresalzen | |
DE2032170B2 (de) | Verfahren zur Herstellung von Isobornylphenolen | |
DE3633308A1 (de) | Verfahren zur herstellung von t-alkyl-t-aralkylperoxiden | |
DE1939924B2 (de) | Verfahren zur herstellung von allantoin in waessrigem medium | |
DE3722796C2 (en, 2012) | ||
CH631146A5 (de) | Verfahren zur herstellung von 2,6-dimethoxy-4-(quaternaeren-alkyl)phenolen. | |
EP1272462B1 (de) | Semikontinuierliches verfahren zur herstellung von 4,4'-dihydroxydiphenylsulfon | |
DE3615811C2 (en, 2012) | ||
WO1991006524A1 (de) | Verfahren zur herstellung von 1,4-bis-(4-hydroxybenzoyl)-benzol | |
EP0341594B1 (de) | Verfahren zur Herstellung eines Addukts aus 2-Hydroxy-naphthalin-6-carbonsäure und 1,4-Dioxan und dessen Verwendung | |
DE3019500C2 (en, 2012) | ||
DE2332064C2 (de) | Verfahren zur Herstellung von 2-Hydroxy-naphthalin-3-carbonsäure | |
DE1543866C (de) | Verfahren zur Herstellung von p Chlorphenol | |
DE3122073A1 (de) | Verfahren zur herstellung von hochprozentigem dicamba | |
DE2703919B1 (de) | Verfahren zur Herstellung von p-Nitroso-diphenylhydroxylaminen | |
DE2321332C2 (de) | Verfahren zur Herstellung von 2-Nitro-5-chlor-benzolsulfonsäurechlorid oder von 2-Nitro-5-chlor-benzolsulfonsäure | |
DE2210916C3 (de) | Verfahren zur Herstellung von Dibrompropyläthern hochhalogenierter Phenole | |
DE2145308C3 (de) | Verfahren zur Herstellung von 4-(4-Hydroxyphenyl)-butan-2-on | |
DE1931062C3 (de) | Verfahren zur Herstellung von 133-Trialkyl-2,4,6-tris-(3^dialkyl-4-hydroxybenzyl)-benzolen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition |