AR241134A2 - Un procedimiento para preparar w-lactamas - Google Patents
Un procedimiento para preparar w-lactamasInfo
- Publication number
- AR241134A2 AR241134A2 AR30346686A AR30346686A AR241134A2 AR 241134 A2 AR241134 A2 AR 241134A2 AR 30346686 A AR30346686 A AR 30346686A AR 30346686 A AR30346686 A AR 30346686A AR 241134 A2 AR241134 A2 AR 241134A2
- Authority
- AR
- Argentina
- Prior art keywords
- stage
- reaction
- lactams
- mixture
- preparing
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/02—Preparation of lactams
- C07D201/08—Preparation of lactams from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles
Abstract
UN PROCEDIMIENTO PARA PREPARAR W-LACTAMAS QUE CONTIENEN DE 5 A 14 ATOMOS DE CARBONO, QUE COMPRENDE LAS ETAPAS SIGUIENTES: A) ETAPA DE PREMEZCLA, EN LA QUE SE MEZCLAN ACIDOS CICLOALIFATICOS QUE TIENEN LA FORMULA GENERAL (I), EN LA QUE N=3 - 13 Y/O LOS ANHIDRIDOS CORRESPONDIENTES, CON UN AGENTE DESHIDRATANTE; B) PRIMERA ETAPA DE REACCION EN LA QUE UN AGENTE NITROSANTE Y LA MEZCLA DE LA ETAPA 1 SE INTRODUCEN EN UN REACTOR MANTENIDO A UNA TEMPERATURACOMPRENDIDA ENTRE 30 Y 100{C; C) SEGUNDA ETAPA DE REACCION, EN LA QUE TIENE LUGAR LA FINALIZACION DE LA REACCION DE LACTAMIZACION A UNA TEMPERATURA COMPRENDIDA ENTRE 30 Y 100 C; D) ETAPA DE RECUPERACION DEL ACIDO CICLOALIFATICO QUE NO HA REACCIONADO, EL PROCESOTIENE LA PARTICULARIDAD DE QUE EN DICHA SEGUNDA ETAPA DE REACCION, SE AÑADE AGUA EN UNA CANTIDAD MUY LIMITADA Y QUE CORRESPONDE A UNA PROPORCION MOLAR U=H2O/ EQUIVALENTES DE SO3 COMPRENDIDO ENTRE 0,1 Y 0,90.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT20089/85A IT1187655B (it) | 1985-03-27 | 1985-03-27 | Procedimento per la preparazione di w-lattami,in particolare caprolattame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AR241134A1 AR241134A1 (es) | 1991-11-29 |
| AR241134A2 true AR241134A2 (es) | 1991-11-29 |
Family
ID=11163709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AR303466A AR241134A1 (es) | 1985-03-27 | 1986-03-24 | Un procedimiento para preparar w-lactamas |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4647661A (es) |
| EP (1) | EP0197408A3 (es) |
| AR (1) | AR241134A1 (es) |
| BR (1) | BR8601349A (es) |
| ES (1) | ES8705859A1 (es) |
| IN (1) | IN167050B (es) |
| IT (1) | IT1187655B (es) |
| MX (1) | MX165249B (es) |
| SU (1) | SU1588278A3 (es) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4793994A (en) * | 1986-06-27 | 1988-12-27 | Gaf Corporation | Compositions used in permanent structure altering of hair |
| US4775527A (en) * | 1986-06-27 | 1988-10-04 | Gaf Corporation | Compositions used in permanent alteration of hair color |
| US5153307A (en) * | 1991-07-31 | 1992-10-06 | International Business Machines Corporation | Stabilization of polyamide alkyl ester solutions |
| US5284357A (en) * | 1991-11-01 | 1994-02-08 | Tinkler Michael R | Apparatus and method for damping deflections and vibrations in skis |
| CN100374418C (zh) * | 2006-03-01 | 2008-03-12 | 湘潭大学 | 一种合成己内酰胺及其低聚物的方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3022291A (en) * | 1962-02-20 | cuhno | ||
| GB1050547A (es) * | 1963-03-06 | |||
| IT723201A (es) * | 1964-05-15 | |||
| IT1125603B (it) * | 1979-11-02 | 1986-05-14 | Snia Viscosa | Procedimento per la preparazione di omega-lattami,in particolare caprolattame |
| US4349437A (en) * | 1980-07-24 | 1982-09-14 | Rickett David A | Automatic and continuous chemical feed system |
-
1985
- 1985-03-27 IT IT20089/85A patent/IT1187655B/it active
-
1986
- 1986-03-14 IN IN186/MAS/86A patent/IN167050B/en unknown
- 1986-03-22 EP EP86103982A patent/EP0197408A3/en not_active Withdrawn
- 1986-03-24 AR AR303466A patent/AR241134A1/es active
- 1986-03-24 ES ES553304A patent/ES8705859A1/es not_active Expired
- 1986-03-26 BR BR8601349A patent/BR8601349A/pt not_active IP Right Cessation
- 1986-03-26 MX MX001998A patent/MX165249B/es unknown
- 1986-03-26 SU SU864027185A patent/SU1588278A3/ru active
- 1986-03-27 US US06/845,122 patent/US4647661A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| MX165249B (es) | 1992-11-04 |
| ES553304A0 (es) | 1987-05-16 |
| EP0197408A2 (en) | 1986-10-15 |
| SU1588278A3 (ru) | 1990-08-23 |
| US4647661A (en) | 1987-03-03 |
| EP0197408A3 (en) | 1990-03-14 |
| IT1187655B (it) | 1987-12-23 |
| AR241134A1 (es) | 1991-11-29 |
| ES8705859A1 (es) | 1987-05-16 |
| IT8520089A0 (it) | 1985-03-27 |
| IN167050B (es) | 1990-08-25 |
| BR8601349A (pt) | 1986-12-02 |
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