MX9400808A - Procedimieto para preparar oxazolidino-2,4-dionas n-sustituidas. - Google Patents
Procedimieto para preparar oxazolidino-2,4-dionas n-sustituidas.Info
- Publication number
- MX9400808A MX9400808A MX9400808A MX9400808A MX9400808A MX 9400808 A MX9400808 A MX 9400808A MX 9400808 A MX9400808 A MX 9400808A MX 9400808 A MX9400808 A MX 9400808A MX 9400808 A MX9400808 A MX 9400808A
- Authority
- MX
- Mexico
- Prior art keywords
- substituted
- oxazolidino
- ammonium carbamate
- salt
- reacting
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
- C07D263/30—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D263/34—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D263/44—Two oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C269/00—Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
Un procedimiento para preparar oxazolidino-2,4-dionas N-sustituidas, que comprende: (a) poner en contacto dióxido de carbono y una amina primaria o amoniaco en presencia de un solvente orgánico aprótico y una base nitrogenosa orgánica, para producir la sal carbamato de amonio correspondiente; y (b) hacer reaccionar la sal carbamato de amonio con éster de ácido carboxílico Ó-sustituido, que tiene la fórmula X-CHR1CO2R2 para producir la oxazolidino-2,4-diona N-sustituida. Una segunda modalidad comprende recuperar la sal carbamato de amonio del paso (a), antes de hacer reaccionar la sal carbamato de amonio con el éster de ácido carboxílico Ó-sustituido, en presencia de un solvente orgánico aprótico y de una base nitrogenosa orgánica. Una tercera modalidad comprende hacer reaccionar la oxazolidino-2,4-diona N-sustituida, con un nucleófilo seleccionado del grupo que consiste de aminas primarias alifáticas o alicíclicas, alcoholes y tioles; en donde la reacción se lleva a cabo en presencia de un catalizador de ácido de Lewis, cuando el nucleófilo es un alcohol alifático o alicíclico.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1159193A | 1993-02-01 | 1993-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX9400808A true MX9400808A (es) | 1994-08-31 |
Family
ID=21751092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX9400808A MX9400808A (es) | 1993-02-01 | 1994-01-31 | Procedimieto para preparar oxazolidino-2,4-dionas n-sustituidas. |
Country Status (2)
| Country | Link |
|---|---|
| MX (1) | MX9400808A (es) |
| WO (1) | WO1994018181A1 (es) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19613333A1 (de) * | 1996-04-03 | 1997-10-09 | Bayer Ag | Verfahren zur Herstellung von Oxazolidin-2,4-dionen |
| CA3110279A1 (en) * | 2018-09-10 | 2020-03-19 | Huntsman International Llc | Oxazolidinedione-terminated prepolymer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2711659A1 (de) * | 1977-03-17 | 1978-09-21 | Basf Ag | Verfahren zur herstellung von 2,4-dioxo-oxazolidinen |
| DE2813873A1 (de) * | 1978-03-31 | 1979-10-11 | Basf Ag | Verfahren zur herstellung von oxazolidin-2,4-dionen |
| IT1125486B (it) * | 1979-10-17 | 1986-05-14 | Anic Spa | Processo per la preparazione di carbamil derivati di alfa-idrossiacidi e dei corrispondenti alfa-idrossiacidi |
| US5223638A (en) * | 1991-04-29 | 1993-06-29 | Monsanto Company | Preparation of urethane and carbonate products |
-
1994
- 1994-01-05 WO PCT/US1994/000168 patent/WO1994018181A1/en active Application Filing
- 1994-01-31 MX MX9400808A patent/MX9400808A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO1994018181A1 (en) | 1994-08-18 |
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