MX168946B - Proceso mejorado para la preparacion de aralquil monouretanos - Google Patents
Proceso mejorado para la preparacion de aralquil monouretanosInfo
- Publication number
- MX168946B MX168946B MX009102A MX910287A MX168946B MX 168946 B MX168946 B MX 168946B MX 009102 A MX009102 A MX 009102A MX 910287 A MX910287 A MX 910287A MX 168946 B MX168946 B MX 168946B
- Authority
- MX
- Mexico
- Prior art keywords
- preparation
- improved process
- monouretanos
- aralquil
- reaction
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 125000005907 alkyl ester group Chemical group 0.000 abstract 1
- 125000003710 aryl alkyl group Chemical group 0.000 abstract 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 abstract 1
- -1 divinyl aromatic hydrocarbon Chemical class 0.000 abstract 1
- KJAMZCVTJDTESW-UHFFFAOYSA-N tiracizine Chemical compound C1CC2=CC=CC=C2N(C(=O)CN(C)C)C2=CC(NC(=O)OCC)=CC=C21 KJAMZCVTJDTESW-UHFFFAOYSA-N 0.000 abstract 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
- C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Abstract
La presente invención se refiere a un proceso mejorado para la preparación de un monouretano seleccionado de la fórmula: en donde R es alquilo con aproximadamente de 1 a aproximadamente 18 átomos de carbono, R1 es un grupo alquilideno de aproximadamente 1 a aproximadamente 3 átomos de carbono y R2 y R3 cada uno son un grupo alquilo que tiene de aproximadamente 1 a aproximadamente 3 átomos de carbono y G es un grupo hidrocarburo aromático divalente, la mejora comprende hacer reaccionar selectivamente: a) un hidrocarburo divinil aromático de la fórmula -(CR2R1)2 en donde R1, R2 y G son como se definieron anteriormente, con b) un éster de ácido carbámico de la fórmula NH2CO2R en donde R es como se definió anteriormente, en la presencia de: c) una cantidad catalítica efectiva de un ácido a una temperatura de aproximadamente 25 grados C, a un valor no substancialmente por encima de aproximadamente 40 grados C, hasta que se complete substancialmente la formación de una mezcla del compuesto monouretano y el compuesto diuretano correspondiente, en donde el compuesto monouretano comrpende una proporción principal de aproximadamente 3.8:1 mayor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US92605586A | 1986-11-03 | 1986-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX168946B true MX168946B (es) | 1993-06-16 |
Family
ID=25452673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX009102A MX168946B (es) | 1986-11-03 | 1987-10-30 | Proceso mejorado para la preparacion de aralquil monouretanos |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0266659B1 (es) |
| JP (1) | JPH085849B2 (es) |
| KR (1) | KR950006899B1 (es) |
| AT (1) | ATE104954T1 (es) |
| BR (1) | BR8705868A (es) |
| DE (1) | DE3789699T2 (es) |
| MX (1) | MX168946B (es) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5252689A (en) * | 1992-10-20 | 1993-10-12 | American Cyanamid Company | N-hydroxysuccinimide-blocked isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and self-cross linking copolymers thereof |
| US5233003A (en) * | 1992-10-20 | 1993-08-03 | American Cyanamid Company | Process for the preparation of gel-free self-crosslinking copolymers derived from blocked isopropenyl-alpha, alpha-dimethylbenzyl isocyanate |
| KR100312414B1 (ko) * | 1999-07-23 | 2001-11-03 | 조정남 | 신호의 차등 손실을 갖는 다중화 및 역다중화 장치와 그들을이용한 광전송 시스템 |
| CN118146118A (zh) * | 2022-12-07 | 2024-06-07 | 万华化学集团股份有限公司 | 提高异氰酸酯的收率的方法和异氰酸酯的制备方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4439616A (en) * | 1982-07-22 | 1984-03-27 | American Cyanamid Company | Tertiary aralkyl urethanes and isocyanates derived therefrom |
-
1987
- 1987-10-27 EP EP87115745A patent/EP0266659B1/en not_active Expired - Lifetime
- 1987-10-27 DE DE3789699T patent/DE3789699T2/de not_active Expired - Fee Related
- 1987-10-27 AT AT8787115745T patent/ATE104954T1/de not_active IP Right Cessation
- 1987-10-30 MX MX009102A patent/MX168946B/es unknown
- 1987-11-02 JP JP62275910A patent/JPH085849B2/ja not_active Expired - Lifetime
- 1987-11-02 KR KR1019870012322A patent/KR950006899B1/ko not_active Expired - Fee Related
- 1987-11-03 BR BR8705868A patent/BR8705868A/pt not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH085849B2 (ja) | 1996-01-24 |
| KR950006899B1 (ko) | 1995-06-26 |
| JPS63183552A (ja) | 1988-07-28 |
| BR8705868A (pt) | 1988-06-14 |
| KR880006171A (ko) | 1988-07-21 |
| DE3789699T2 (de) | 1994-12-01 |
| DE3789699D1 (de) | 1994-06-01 |
| EP0266659A2 (en) | 1988-05-11 |
| EP0266659A3 (en) | 1989-01-18 |
| EP0266659B1 (en) | 1994-04-27 |
| ATE104954T1 (de) | 1994-05-15 |
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