DE2201208A1 - Verfahren zur herstellung von aromatischen ketonen - Google Patents
Verfahren zur herstellung von aromatischen ketonenInfo
- Publication number
- DE2201208A1 DE2201208A1 DE19722201208 DE2201208A DE2201208A1 DE 2201208 A1 DE2201208 A1 DE 2201208A1 DE 19722201208 DE19722201208 DE 19722201208 DE 2201208 A DE2201208 A DE 2201208A DE 2201208 A1 DE2201208 A1 DE 2201208A1
- Authority
- DE
- Germany
- Prior art keywords
- aromatic
- parts
- sulfonic acid
- reaction
- acid
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 11
- 150000008365 aromatic ketones Chemical class 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 15
- -1 carboxylic acid chlorides Chemical class 0.000 claims description 9
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 9
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 150000001491 aromatic compounds Chemical class 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 125000001424 substituent group Chemical group 0.000 claims description 4
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 4
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 3
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 claims description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 239000011541 reaction mixture Substances 0.000 description 9
- NHJVRSWLHSJWIN-UHFFFAOYSA-N 2,4,6-trinitrobenzenesulfonic acid Chemical compound OS(=O)(=O)C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O NHJVRSWLHSJWIN-UHFFFAOYSA-N 0.000 description 7
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 6
- 238000009835 boiling Methods 0.000 description 5
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 4
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 3
- SKDHHIUENRGTHK-UHFFFAOYSA-N 4-nitrobenzoyl chloride Chemical compound [O-][N+](=O)C1=CC=C(C(Cl)=O)C=C1 SKDHHIUENRGTHK-UHFFFAOYSA-N 0.000 description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- 238000005727 Friedel-Crafts reaction Methods 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 150000003460 sulfonic acids Chemical class 0.000 description 3
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 3
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 2
- NWFOTILLJRKQQH-UHFFFAOYSA-N 1-nitro-9,10-dioxoanthracene-2-carbonyl chloride Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC(C(Cl)=O)=C2[N+](=O)[O-] NWFOTILLJRKQQH-UHFFFAOYSA-N 0.000 description 2
- JVSFQJZRHXAUGT-UHFFFAOYSA-N 2,2-dimethylpropanoyl chloride Chemical compound CC(C)(C)C(Cl)=O JVSFQJZRHXAUGT-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 description 2
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical group OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 2
- XEMRAKSQROQPBR-UHFFFAOYSA-N (trichloromethyl)benzene Chemical compound ClC(Cl)(Cl)C1=CC=CC=C1 XEMRAKSQROQPBR-UHFFFAOYSA-N 0.000 description 1
- RELMFMZEBKVZJC-UHFFFAOYSA-N 1,2,3-trichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1Cl RELMFMZEBKVZJC-UHFFFAOYSA-N 0.000 description 1
- IJSLNFBUJUTKGK-UHFFFAOYSA-N 1-(4-methoxyphenyl)-2,2-dimethylpropan-1-one Chemical compound COC1=CC=C(C(=O)C(C)(C)C)C=C1 IJSLNFBUJUTKGK-UHFFFAOYSA-N 0.000 description 1
- IVFGXTYRSDHGSH-UHFFFAOYSA-N 2,6-dinitro-4-(trifluoromethyl)benzenesulfonic acid Chemical compound OS(=O)(=O)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O IVFGXTYRSDHGSH-UHFFFAOYSA-N 0.000 description 1
- QQLVNESSEYHBGQ-UHFFFAOYSA-N 2-cyano-4,6-dinitrobenzenesulfonic acid Chemical compound C1=C(C(=C(C#N)C=C1N(=O)=O)S(=O)(=O)O)N(=O)=O QQLVNESSEYHBGQ-UHFFFAOYSA-N 0.000 description 1
- WFSGQBNCVASPMW-UHFFFAOYSA-N 2-ethylhexanoyl chloride Chemical compound CCCCC(CC)C(Cl)=O WFSGQBNCVASPMW-UHFFFAOYSA-N 0.000 description 1
- YASDJUXENMYIBH-UHFFFAOYSA-N 3-methyl-3-phenyl-1,2-dihydroindene Chemical compound C1CC2=CC=CC=C2C1(C)C1=CC=CC=C1 YASDJUXENMYIBH-UHFFFAOYSA-N 0.000 description 1
- ZJWPTOOEGMFAJZ-UHFFFAOYSA-N 4-cyano-2,6-dinitrobenzenesulfonic acid Chemical compound OS(=O)(=O)C1=C([N+]([O-])=O)C=C(C#N)C=C1[N+]([O-])=O ZJWPTOOEGMFAJZ-UHFFFAOYSA-N 0.000 description 1
- 229910015900 BF3 Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000005863 Friedel-Crafts acylation reaction Methods 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 241001442654 Percnon planissimum Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- WETWJCDKMRHUPV-UHFFFAOYSA-N acetyl chloride Chemical compound CC(Cl)=O WETWJCDKMRHUPV-UHFFFAOYSA-N 0.000 description 1
- 239000012346 acetyl chloride Substances 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 1
- FDQSRULYDNDXQB-UHFFFAOYSA-N benzene-1,3-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=CC(C(Cl)=O)=C1 FDQSRULYDNDXQB-UHFFFAOYSA-N 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002475 indoles Chemical class 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- XMVJITFPVVRMHC-UHFFFAOYSA-N roxarsone Chemical group OC1=CC=C([As](O)(O)=O)C=C1[N+]([O-])=O XMVJITFPVVRMHC-UHFFFAOYSA-N 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LXEJRKJRKIFVNY-UHFFFAOYSA-N terephthaloyl chloride Chemical compound ClC(=O)C1=CC=C(C(Cl)=O)C=C1 LXEJRKJRKIFVNY-UHFFFAOYSA-N 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/45—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by at least one doubly—bound oxygen atom, not being part of a —CHO group
- C07C205/46—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by at least one doubly—bound oxygen atom, not being part of a —CHO group the carbon skeleton containing carbon atoms of quinone rings
- C07C205/47—Anthraquinones containing nitro groups
- C07C205/48—Anthraquinones containing nitro groups the carbon skeleton being further substituted by singly-bound oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/45—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by at least one doubly—bound oxygen atom, not being part of a —CHO 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
- C07C45/45—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation
- C07C45/46—Friedel-Crafts reactions
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
- C07C49/782—Ketones containing a keto group bound to a six-membered aromatic ring polycyclic
- C07C49/784—Ketones containing a keto group bound to a six-membered aromatic ring polycyclic with all keto groups bound to a non-condensed ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
- C07C49/84—Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
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)
- Catalysts (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE793721D BE793721A (fr) | 1972-01-12 | Procede de preparation de cetones aromatiques | |
| DE19722201208 DE2201208A1 (de) | 1972-01-12 | 1972-01-12 | Verfahren zur herstellung von aromatischen ketonen |
| US322206A US3907837A (en) | 1972-01-12 | 1973-01-09 | Production of aromatic ketones |
| CH29573A CH578493A5 (enExample) | 1972-01-12 | 1973-01-10 | |
| GB150673A GB1411886A (en) | 1972-01-12 | 1973-01-11 | Production of aromatic ketones |
| JP557573A JPS5120498B2 (enExample) | 1972-01-12 | 1973-01-11 | |
| FR7301023A FR2168007A1 (en) | 1972-01-12 | 1973-01-12 | Aromatic ketone prepn - using aromatic polynitro-sulphonic acid catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722201208 DE2201208A1 (de) | 1972-01-12 | 1972-01-12 | Verfahren zur herstellung von aromatischen ketonen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2201208A1 true DE2201208A1 (de) | 1973-08-02 |
Family
ID=5832758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722201208 Pending DE2201208A1 (de) | 1972-01-12 | 1972-01-12 | Verfahren zur herstellung von aromatischen ketonen |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5120498B2 (enExample) |
| CH (1) | CH578493A5 (enExample) |
| DE (1) | DE2201208A1 (enExample) |
| FR (1) | FR2168007A1 (enExample) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2731742A1 (de) * | 1977-07-14 | 1979-02-15 | Erdoelchemie Gmbh | Verfahren zur herstellung von aethanol |
| EP0066153A1 (de) * | 1981-05-25 | 1982-12-08 | CASSELLA Aktiengesellschaft | 4-Isopropyl-4'-nitrobenzophenon und Verfahren zu seiner Herstellung |
| US5364972A (en) * | 1991-09-25 | 1994-11-15 | Basf Aktiengesellschaft | Preparation of nitrobenzophenones, and a color-stable modification of a benzophenone-azopyridone dye |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE87130C (enExample) * | ||||
| US3591384A (en) * | 1967-02-15 | 1971-07-06 | Ferrania Spa | Silver halide emulsion containing naphthamide photographic couplers |
| US3574758A (en) * | 1967-05-29 | 1971-04-13 | Kathryn G Shipp | Polynitrobenzophenone |
| FR1550129A (enExample) * | 1967-07-18 | 1968-12-20 | ||
| US3657267A (en) * | 1969-06-20 | 1972-04-18 | Janssen Pharmaceutica Nv | Benzimidazole carbamates |
-
1972
- 1972-01-12 DE DE19722201208 patent/DE2201208A1/de active Pending
-
1973
- 1973-01-10 CH CH29573A patent/CH578493A5/xx not_active IP Right Cessation
- 1973-01-11 JP JP557573A patent/JPS5120498B2/ja not_active Expired
- 1973-01-12 FR FR7301023A patent/FR2168007A1/fr active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2731742A1 (de) * | 1977-07-14 | 1979-02-15 | Erdoelchemie Gmbh | Verfahren zur herstellung von aethanol |
| EP0066153A1 (de) * | 1981-05-25 | 1982-12-08 | CASSELLA Aktiengesellschaft | 4-Isopropyl-4'-nitrobenzophenon und Verfahren zu seiner Herstellung |
| US5364972A (en) * | 1991-09-25 | 1994-11-15 | Basf Aktiengesellschaft | Preparation of nitrobenzophenones, and a color-stable modification of a benzophenone-azopyridone dye |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4880530A (enExample) | 1973-10-29 |
| JPS5120498B2 (enExample) | 1976-06-25 |
| FR2168007B1 (enExample) | 1976-05-14 |
| FR2168007A1 (en) | 1973-08-24 |
| CH578493A5 (enExample) | 1976-08-13 |
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