RO100193B1 - Procedeu de obtinere a unor diesteri ai acidului 2, 2' -1, 2-fenilen-bis-(oxi)?is-acetic - Google Patents
Procedeu de obtinere a unor diesteri ai acidului 2, 2' -1, 2-fenilen-bis-(oxi)?is-aceticInfo
- Publication number
- RO100193B1 RO100193B1 RO135028A RO13502888A RO100193B1 RO 100193 B1 RO100193 B1 RO 100193B1 RO 135028 A RO135028 A RO 135028A RO 13502888 A RO13502888 A RO 13502888A RO 100193 B1 RO100193 B1 RO 100193B1
- Authority
- RO
- Romania
- Prior art keywords
- sub
- bis
- phenylene
- acetic acid
- acid
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Inventia de fata se refera la un procedeu de obtinere a unor diesteri ai acidului 2,2'-[1,2-fenilen-bis-(oxi)-bis-acetic, cu formula generala I : (vezi formula în pag.1), în care R reprezinta un rest alifatic normal C<sub>4</sub> - C<sub>8</sub>, C<sub>10</sub>, respectiv un rest izoalifatic C<sub>4</sub> - C<sub>6</sub> si C<sub>2</sub> - C<sub>6</sub> (2-etil-hexil), prin esterificarea acidului 2,2'-(1,2-fenilen-bis-(oxi)]bis-acetic cu alcooli alifatici superiori corespunzatori, conform careia se lucreaza în sistem azeotrop, folosind un exces 20 ... 50 % alcool alifatic normal C<sub>4</sub> - C<sub>8</sub>, C<sub>10</sub>, respectiv rest izoalifatic C<sub>4</sub> - C<sub>6</sub> si C<sub>2 - 6</sub> (2-etil-hexil) 1 ... 3 % catalizator acid, ales dintre acid benzen sulfonic, p-toluen sulfonic sau sulfuric, un antrenament, ales dintre benzen, toluen sau xilen în cantitate echivalenta la dubla fata de cantitatea de diacid luata în lucru prin fierbere la reflux, timp de 1,5 ... 3 h, dupa care se purifica printr-o succesiune de faze constând în filtrarea suspensiei solide, îndepartarea în vacuum a agentului de antrenare si excesului de alcool, spalari alcaline si cu apa demineralizata, devolatilizare si decolorare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO135028A RO100193B1 (ro) | 1988-09-03 | 1988-09-03 | Procedeu de obtinere a unor diesteri ai acidului 2, 2' -1, 2-fenilen-bis-(oxi)?is-acetic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO135028A RO100193B1 (ro) | 1988-09-03 | 1988-09-03 | Procedeu de obtinere a unor diesteri ai acidului 2, 2' -1, 2-fenilen-bis-(oxi)?is-acetic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO100193A2 RO100193A2 (ro) | 1990-07-24 |
| RO100193B1 true RO100193B1 (ro) | 1990-07-30 |
Family
ID=20122410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO135028A RO100193B1 (ro) | 1988-09-03 | 1988-09-03 | Procedeu de obtinere a unor diesteri ai acidului 2, 2' -1, 2-fenilen-bis-(oxi)?is-acetic |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO100193B1 (ro) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19904207A1 (de) * | 1999-02-03 | 2000-08-10 | Basf Ag | Verfahren zur Herstellung von Estern |
-
1988
- 1988-09-03 RO RO135028A patent/RO100193B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO100193A2 (ro) | 1990-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR830003511A (ko) | 신규 지방친화성 무라밀 펩타이드 및 그 제법 | |
| ES8104174A1 (es) | Procedimiento para preparar acetales | |
| US6444144B1 (en) | Polyethoxylated ascorbic acid derivatives as a novel antioxidant and process for preparing thereof | |
| DE60117963D1 (de) | Verfahren zu herstellung von citalopram | |
| ATE28187T1 (de) | Polyprenylcarbonsaeureamide und verfahren zu ihrer herstellung. | |
| RO100193B1 (ro) | Procedeu de obtinere a unor diesteri ai acidului 2, 2' -1, 2-fenilen-bis-(oxi)?is-acetic | |
| FR2355780A1 (fr) | Procede de separation et de purification de platine et palladium | |
| RO100192B1 (ro) | Procedeu de obtinere a unor diesteri ai acidului 2, 2' -1, 3-fenilen-bis(oxi)?is-acetic | |
| RO100194B1 (ro) | PROCEDEU DE PREPARARE A UNOR DIESTERI AI 2, 2' -a1, 4-FENILEN-BIS-(OXI)]-BIS-ETANOLULUI | |
| ES448150A1 (es) | Procedimiento para la preparacion de derivados de poliglico-leter no ionicos. | |
| RO100195B1 (ro) | Procedeu de obtinere a unor diesteri ai 2, 2' -]1, 3-fenilen-bis-(oxi)]-bis-etanolului | |
| RO99386B1 (ro) | Procedeu de obtinere a unor plastifianti pentru policlorura de vinil | |
| RO100418B1 (ro) | Procedeu de obtinere a unor plastifianti pentru policlorura de vinil | |
| ATE105290T1 (de) | Aminoalkoxyphenyl-derivate, verfahren zu ihrer herstellung und diese enthaltende zusammensetzungen. | |
| IE41407L (en) | Prostanoic acid analogues | |
| JPS5779185A (en) | Manufacture of n-valerianic acid or its ester | |
| JPS5522610A (en) | Preparation of carboxylic acid ester | |
| JPS54132516A (en) | Purification of acetic acid | |
| JPS5535062A (en) | Preparation of beta-phenyl-ethyl alcohol | |
| JPS5398923A (en) | Preparation of hydroxyacetic acid | |
| JPS5598200A (en) | Preparation of 24xi, 25-dihydroxycholesta-1,4,6-trien-3-one | |
| JPS54144327A (en) | Separation and purification of styrene oxide | |
| EP0238958A3 (en) | Method for the purification of tetraacetylethylenediamine | |
| JPS53127470A (en) | Preparation of urocanic acid ethyl ester | |
| JPS55143928A (en) | Preparation of coenzyme q analog compound |