RO81981B1 - Procedeu de obtinere a 4, 4'-dihidroxidifenilsulfonei - Google Patents
Procedeu de obtinere a 4, 4'-dihidroxidifenilsulfoneiInfo
- Publication number
- RO81981B1 RO81981B1 RO104581A RO10458181A RO81981B1 RO 81981 B1 RO81981 B1 RO 81981B1 RO 104581 A RO104581 A RO 104581A RO 10458181 A RO10458181 A RO 10458181A RO 81981 B1 RO81981 B1 RO 81981B1
- Authority
- RO
- Romania
- Prior art keywords
- reaction
- water
- phenol
- reaction temperature
- dihydroxydiphenylsulhone
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000005119 centrifugation Methods 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
- 238000001953 recrystallisation Methods 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 150000003457 sulfones Chemical class 0.000 abstract 1
- VBMHLJHEUUUOEG-UHFFFAOYSA-N sulfuric acid sulfur trioxide Chemical compound S(O)(O)(=O)=O.S(=O)(=O)=O.S(O)(O)(=O)=O VBMHLJHEUUUOEG-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Inventia se refera la un procedeu de obtinere a 4,4'-dihidroxidifenilsulfonei cu formula generala I: (vezi formula) prin tratarea fenolului cu acid sulfuric oleum cu concentratia de 20% SO3, conform caruia se lucreaza în prima faza de reactie la un raport în greutate între reactanti de 1:1,2 si în absenta solventilor sau a catalizatorilor, initial la temperatura de reactie de 110...130 degree C, timp de 3h, iar în cea de a doua reactie se condenseaza acidul parafenolsulfonic cu 1,2...2,45 mol fenol, mentinîndu-se temperatura de reactie la 150...170 degree C, îndepartarea apei în cele doua faze de reactie realizîndu-se intermitent la un vid de 18...20 mmHg, dupa care se purifica produsul de reactie obtinut prin recristalizare din apa, separîndu-se 4,4'-dihidroxifenil-sulfona prin filtrare sau centrifugare la cald si respectiv racirea filtratului.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO81104581A RO81981A2 (ro) | 1981-06-15 | 1981-06-15 | Procedeu de obtinere a 4,4'-dihidroxidifenilsulfonei |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO81104581A RO81981A2 (ro) | 1981-06-15 | 1981-06-15 | Procedeu de obtinere a 4,4'-dihidroxidifenilsulfonei |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO81981B1 true RO81981B1 (ro) | 1983-06-30 |
| RO81981A2 RO81981A2 (ro) | 1983-07-07 |
Family
ID=20110080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO81104581A RO81981A2 (ro) | 1981-06-15 | 1981-06-15 | Procedeu de obtinere a 4,4'-dihidroxidifenilsulfonei |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO81981A2 (ro) |
-
1981
- 1981-06-15 RO RO81104581A patent/RO81981A2/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO81981A2 (ro) | 1983-07-07 |
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