RO83725B1 - Procedeu de obtinere a ftalidei - Google Patents
Procedeu de obtinere a ftalideiInfo
- Publication number
- RO83725B1 RO83725B1 RO106346A RO10634682A RO83725B1 RO 83725 B1 RO83725 B1 RO 83725B1 RO 106346 A RO106346 A RO 106346A RO 10634682 A RO10634682 A RO 10634682A RO 83725 B1 RO83725 B1 RO 83725B1
- Authority
- RO
- Romania
- Prior art keywords
- phthalide
- phthalimide
- reduction
- carried out
- lactonization
- Prior art date
Links
- WNZQDUSMALZDQF-UHFFFAOYSA-N 2-benzofuran-1(3H)-one Chemical compound C1=CC=C2C(=O)OCC2=C1 WNZQDUSMALZDQF-UHFFFAOYSA-N 0.000 title abstract 4
- 238000002360 preparation method Methods 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- MGMNPSAERQZUIM-UHFFFAOYSA-N 2-(hydroxymethyl)benzoic acid Chemical compound OCC1=CC=CC=C1C(O)=O MGMNPSAERQZUIM-UHFFFAOYSA-N 0.000 abstract 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- 238000007273 lactonization reaction Methods 0.000 abstract 2
- XKJCHHZQLQNZHY-UHFFFAOYSA-N phthalimide Chemical compound C1=CC=C2C(=O)NC(=O)C2=C1 XKJCHHZQLQNZHY-UHFFFAOYSA-N 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 239000003463 adsorbent Substances 0.000 abstract 1
- 239000012670 alkaline solution Substances 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 1
Landscapes
- Indole Compounds (AREA)
Abstract
Inventia se refera la un procedeu de obtinere a ftalidei prin reducerea ftalimidei cu zinc în mediu apos alcalin, cu lactonizarea ulterioara a acidului 2-hidroximetilbenzoic rezultat în mediu acid, si anume reducerea se realizeaza la o concentratie constanta la 1,4-1,5 mol de ftalimida într-o solutie de hidroxid de sodiu de 13,0 + - 0,5, timpul de reflux este de 5-6 h, precipitatul de oxid de zinc se filtreaza la o temperatura de 80-90 degree C si se spala eficient cu apa fierbinte, lactonizarea se realizeaza la o concentratie a acidului 2-hidroximetilbenzoic de 10-13% la un pH strict sub 2, si produsul se izoleaza dupa purificarea sa în solutie de hidrocarbura aromatica sau alchilaromatica, prin agitare cu adsorbanti minerali si carbune activ, filtrare si spalari cu apa si solutii slab alcaline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO106346A RO83725B1 (ro) | 1982-01-19 | 1982-01-19 | Procedeu de obtinere a ftalidei |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO106346A RO83725B1 (ro) | 1982-01-19 | 1982-01-19 | Procedeu de obtinere a ftalidei |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO83725A2 RO83725A2 (ro) | 1984-04-02 |
| RO83725B1 true RO83725B1 (ro) | 1984-04-30 |
Family
ID=20110961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO106346A RO83725B1 (ro) | 1982-01-19 | 1982-01-19 | Procedeu de obtinere a ftalidei |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO83725B1 (ro) |
-
1982
- 1982-01-19 RO RO106346A patent/RO83725B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO83725A2 (ro) | 1984-04-02 |
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