ES2040997T3 - Un procedimiento para la produccion de un producto de alquilbenceno. - Google Patents
Un procedimiento para la produccion de un producto de alquilbenceno.Info
- Publication number
- ES2040997T3 ES2040997T3 ES198989302334T ES89302334T ES2040997T3 ES 2040997 T3 ES2040997 T3 ES 2040997T3 ES 198989302334 T ES198989302334 T ES 198989302334T ES 89302334 T ES89302334 T ES 89302334T ES 2040997 T3 ES2040997 T3 ES 2040997T3
- Authority
- ES
- Spain
- Prior art keywords
- substrate
- reaction
- production
- alkylarenes
- hours
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title abstract 2
- 150000004996 alkyl benzenes Chemical class 0.000 title 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 6
- 239000000758 substrate Substances 0.000 abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 3
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 abstract 2
- 239000011541 reaction mixture Substances 0.000 abstract 2
- PLAZTCDQAHEYBI-UHFFFAOYSA-N 2-nitrotoluene Chemical compound CC1=CC=CC=C1[N+]([O-])=O PLAZTCDQAHEYBI-UHFFFAOYSA-N 0.000 abstract 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 1
- 150000003934 aromatic aldehydes Chemical class 0.000 abstract 1
- 230000031709 bromination Effects 0.000 abstract 1
- 238000005893 bromination reaction Methods 0.000 abstract 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 abstract 1
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- 230000000750 progressive effect Effects 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B39/00—Halogenation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
LA BROMACION SELECTIVA DE ALQUILARENOS AL DERIVADO ALFA DIBROMADO ES DESEABLE COMO PRECURSOR PARA LA PRODUCCION SELECTIVA DE, POR EJEMPLO, EL CORRESPONDIENTE ALDEHIDO AROMATICO. SE PUEDEN OBTENER MEJORAS EN LA EXTENSION DE LA SELECTIVIDAD DEL PRODUCTO Y/O EN LA VELOCIDAD DE PRODUCCION, EMPLEANDO UNA REACCION FOTOLITICA ENTRE EL SUSTRATO, PEROXIDO DE HIDROGENO Y BROMURO DE HIDROGENO, CON PROPORCIONES MOLARES DE H2O2: SUSTRATO DE 2,8:1 O MAYORES PREFERIBLEMENTE ENTRE 3,2:1 Y 3,5:1 Y DE BROMURO: SUSTRATO MAYOR DE 2,5:1 PREFERENTEMENTE ENTRE 2,8:1 Y 3,2:1, E INTRODUCCION PROGRESIVA CONTROLADA DEL H2O2, LA REACCION SE LLEVA A CABO EN PRESENCIA DE UNA CANTIDAD SUSTANCIAL DE UN DISOLVENTE ORGANICO PREFERIBLEMENTE MAS DE 5,5 VOLUMENES POR VOLUMEN DE SUSTRATO, MIENTRAS SE IRRADIA CON LUZ DE 250 A 600 MM. LA MEZCLA DE REACCION SE MANTIENE ENTRE 50 Y 60 (GRADOS) C. LA REACCION DURA ENTRE 5 Y 12 HORAS Y EL H2O2 ES INTRODUCIDO PROGRESIVAMENTE EN LAS PRIMERAS 3 A 5 HORAS. EL PROCESO ES ESPECIALMENTEADECUADO PARA PREPARAR ALQUILARENOS DESACTIVADOS, COMO EL O - NITROTOLUENO.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB888806582A GB8806582D0 (en) | 1988-03-19 | 1988-03-19 | Bromination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2040997T3 true ES2040997T3 (es) | 1993-11-01 |
Family
ID=10633742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES198989302334T Expired - Lifetime ES2040997T3 (es) | 1988-03-19 | 1989-03-09 | Un procedimiento para la produccion de un producto de alquilbenceno. |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4923580A (es) |
| EP (1) | EP0336568B1 (es) |
| JP (1) | JPH024720A (es) |
| AT (1) | ATE88688T1 (es) |
| CA (1) | CA1336588C (es) |
| DE (1) | DE68906189T2 (es) |
| ES (1) | ES2040997T3 (es) |
| GB (1) | GB8806582D0 (es) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9210027D0 (en) * | 1992-05-09 | 1992-06-24 | Interox Chemicals Ltd | Oxidation process |
| GB9213420D0 (en) * | 1992-06-24 | 1992-08-05 | Solvay Interox Ltd | Aromatic carboxylic acids |
| DE19547249A1 (de) * | 1995-12-18 | 1997-06-19 | Hoechst Ag | Verfahren zur Herstellung von aromatischen (Bromalkyl)-substituierten Kohlenwasserstoffverbindungen |
| CN111732512A (zh) * | 2020-07-17 | 2020-10-02 | 山东卓俊实业有限公司 | 一种邻硝基苯甲醛的制备方法 |
| JP7866478B2 (ja) * | 2022-10-14 | 2026-05-27 | イハラニッケイ化学工業株式会社 | ジブロモメチルベンゼン化合物の製造方法、安息香酸化合物の製造方法、ベンズアルデヒド化合物の製造方法、及び臭化水素のリサイクル方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2227439B2 (de) * | 1972-06-06 | 1977-05-05 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Chlorierung oder bromierung phenolischer verbindungen |
| DD118609A1 (es) * | 1975-04-17 | 1976-03-12 | ||
| DD130416A4 (de) * | 1976-02-05 | 1978-03-29 | Herbert Goldner | Verfahren zur herstellung von o-nitrobenzylbromid |
| CH620412A5 (es) * | 1976-11-09 | 1980-11-28 | Ciba Geigy Ag | |
| CH630050A5 (de) * | 1977-09-30 | 1982-05-28 | Ciba Geigy Ag | Verfahren zur herstellung substituierter benzal- und benzylbromide. |
-
1988
- 1988-03-19 GB GB888806582A patent/GB8806582D0/en active Pending
-
1989
- 1989-03-09 EP EP89302334A patent/EP0336568B1/en not_active Expired - Lifetime
- 1989-03-09 DE DE8989302334T patent/DE68906189T2/de not_active Expired - Fee Related
- 1989-03-09 ES ES198989302334T patent/ES2040997T3/es not_active Expired - Lifetime
- 1989-03-09 AT AT89302334T patent/ATE88688T1/de active
- 1989-03-17 JP JP1065821A patent/JPH024720A/ja active Pending
- 1989-03-17 CA CA000594130A patent/CA1336588C/en not_active Expired - Fee Related
- 1989-03-20 US US07/326,065 patent/US4923580A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0336568A1 (en) | 1989-10-11 |
| DE68906189D1 (de) | 1993-06-03 |
| CA1336588C (en) | 1995-08-08 |
| DE68906189T2 (de) | 1993-08-12 |
| JPH024720A (ja) | 1990-01-09 |
| ATE88688T1 (de) | 1993-05-15 |
| EP0336568B1 (en) | 1993-04-28 |
| GB8806582D0 (en) | 1988-04-20 |
| US4923580A (en) | 1990-05-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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