ES375108A1 - Perfected procedure for the preparation of paranitrated derivatives of phenoles. (Machine-translation by Google Translate, not legally binding) - Google Patents
Perfected procedure for the preparation of paranitrated derivatives of phenoles. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES375108A1 ES375108A1 ES375108A ES375108A ES375108A1 ES 375108 A1 ES375108 A1 ES 375108A1 ES 375108 A ES375108 A ES 375108A ES 375108 A ES375108 A ES 375108A ES 375108 A1 ES375108 A1 ES 375108A1
- Authority
- ES
- Spain
- Prior art keywords
- alkaline
- aqueous solution
- equal
- translation
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 title 1
- 239000007864 aqueous solution Substances 0.000 abstract 3
- 230000009935 nitrosation Effects 0.000 abstract 3
- 238000007034 nitrosation reaction Methods 0.000 abstract 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 2
- 239000011707 mineral Substances 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 238000006467 substitution reaction Methods 0.000 abstract 2
- JSTCPNFNKICNNO-UHFFFAOYSA-N 4-nitrosophenol Chemical compound OC1=CC=C(N=O)C=C1 JSTCPNFNKICNNO-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 159000000011 group IA salts Chemical class 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 150000002989 phenols Chemical class 0.000 abstract 1
- 239000012429 reaction media Substances 0.000 abstract 1
- 125000001424 substituent group Chemical group 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Improved procedure for the preparation of nitrate derivatives of phenols of the formula: **(See formula)** wherein the substituents R may be identical or different and represent lower alkyl radicals of 1 to 4 carbon atoms, (and n is equal to 0, 1 or 2, provided that, when n is equal to 1, the substitution is make in position 3, and when n is equal to 2, the substitutions are made in position 2 and 5, by nitrosation of the corresponding alkaline phenates followed by the oxidation of the para-nitrosophenols formed, said procedure being characterized by comprising: a) a nitrosation step in which an aqueous solution of said alkaline phenate and an aqueous solution of an alkaline nitrite are gradually added in a reaction medium containing a mineral acid diluted with water, at a pH not exceeding 2, 2, preferably from 1 to 2.2, with a nitrite: phenate molar ratio of from 1.4 to 1.5, at a temperature not higher than 10ºC, preferably from 5 to 10ºC, while maintaining the pH of said medium within said interval throughout the nitrosation step by adding dilute mineral acid, and b) an oxidation stage in which the para-nitrosophenol formed in the previous stage is transformed into an alkaline salt, then it is put into an aqueous solution and oxidized by dilute nitric acid at a concentration of 10 to 30% at a temperature not higher than 50ºC. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR182308 | 1968-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES375108A1 true ES375108A1 (en) | 1972-03-16 |
Family
ID=8659569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES375108A Expired ES375108A1 (en) | 1968-12-31 | 1969-12-31 | Perfected procedure for the preparation of paranitrated derivatives of phenoles. (Machine-translation by Google Translate, not legally binding) |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE743851A (en) |
| CH (1) | CH525854A (en) |
| DE (1) | DE1965384C3 (en) |
| ES (1) | ES375108A1 (en) |
| FR (1) | FR1602746A (en) |
| GB (1) | GB1296370A (en) |
| NL (1) | NL169871C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3903157C2 (en) * | 1989-02-02 | 2000-11-09 | Scheffler Gmbh & Co Kg | Fan cap for rear ventilation of roofs |
| FR2705672B1 (en) * | 1993-05-26 | 1995-07-21 | Rhone Poulenc Chimie | Process for the preparation of nitrophenols. |
| JP2951600B2 (en) * | 1996-08-23 | 1999-09-20 | 純正化學株式会社 | Method for selective nitration of phenol derivatives |
| CN113603533A (en) * | 2021-08-13 | 2021-11-05 | 辽宁拓展农业发展有限公司 | Chelating solution for urea synergist and application |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2234692A (en) * | 1939-10-31 | 1941-03-11 | Eastman Kodak Co | Process of making p-nitrosophenol |
| US3320324A (en) * | 1964-01-08 | 1967-05-16 | Hercules Inc | Process for the manufacture of p-nitrosophenol |
| US3519693A (en) * | 1965-11-24 | 1970-07-07 | American Cyanamid Co | Nitration process for phenolic compounds |
-
1968
- 1968-12-31 FR FR1602746D patent/FR1602746A/fr not_active Expired
-
1969
- 1969-12-26 CH CH1923069A patent/CH525854A/en not_active IP Right Cessation
- 1969-12-29 NL NL6919521A patent/NL169871C/en not_active IP Right Cessation
- 1969-12-30 GB GB1296370D patent/GB1296370A/en not_active Expired
- 1969-12-30 DE DE19691965384 patent/DE1965384C3/en not_active Expired
- 1969-12-30 BE BE743851D patent/BE743851A/xx not_active IP Right Cessation
- 1969-12-31 ES ES375108A patent/ES375108A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE743851A (en) | 1970-06-30 |
| NL169871C (en) | 1982-09-01 |
| DE1965384C3 (en) | 1981-09-24 |
| DE1965384B2 (en) | 1980-11-20 |
| CH525854A (en) | 1972-07-31 |
| GB1296370A (en) | 1972-11-15 |
| NL6919521A (en) | 1970-07-02 |
| DE1965384A1 (en) | 1970-07-23 |
| FR1602746A (en) | 1971-01-18 |
| NL169871B (en) | 1982-04-01 |
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