ES8304061A1 - Process for the preparation of 1-chloro-2,6-dinitro-4- (trifluoromethyl)benzene - Google Patents
Process for the preparation of 1-chloro-2,6-dinitro-4- (trifluoromethyl)benzeneInfo
- Publication number
- ES8304061A1 ES8304061A1 ES511587A ES511587A ES8304061A1 ES 8304061 A1 ES8304061 A1 ES 8304061A1 ES 511587 A ES511587 A ES 511587A ES 511587 A ES511587 A ES 511587A ES 8304061 A1 ES8304061 A1 ES 8304061A1
- Authority
- ES
- Spain
- Prior art keywords
- dinitro
- trifluoromethyl
- chloro
- benzene
- 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 2
- HFHAVERNVFNSHL-UHFFFAOYSA-N 2-chloro-1,3-dinitro-5-(trifluoromethyl)benzene Chemical compound [O-][N+](=O)C1=CC(C(F)(F)F)=CC([N+]([O-])=O)=C1Cl HFHAVERNVFNSHL-UHFFFAOYSA-N 0.000 title 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 abstract 2
- 239000012044 organic layer Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 239000012670 alkaline solution Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000002363 herbicidal effect Effects 0.000 abstract 1
- 239000004009 herbicide Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 150000004005 nitrosamines Chemical class 0.000 abstract 1
- 230000009935 nitrosation Effects 0.000 abstract 1
- 238000007034 nitrosation reaction Methods 0.000 abstract 1
- ZSDSQXJSNMTJDA-UHFFFAOYSA-N trifluralin Chemical compound CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O ZSDSQXJSNMTJDA-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Dinitro-PCBT which is free from nitrosation agents is prepared to produce technical Trifluraline with a nitrosamines content of not more than 1 ppm for use as a herbicide through a process in which the dinitro-PCBT is treated with an aqueous bisulphite solution with has an SO2 concentration between 1% and 5% and a pH between 1 and 3 at a temperature between 50 and 100 degree C during a period of between 1 and 3 hours. The organic layer is then separated from the aqueous layer and acidity and the last traces of bisulphite solution are then removed from the organic layer using an aqueous alkaline solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES511587A ES8304061A1 (en) | 1982-04-22 | 1982-04-22 | Process for the preparation of 1-chloro-2,6-dinitro-4- (trifluoromethyl)benzene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES511587A ES8304061A1 (en) | 1982-04-22 | 1982-04-22 | Process for the preparation of 1-chloro-2,6-dinitro-4- (trifluoromethyl)benzene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES511587A0 ES511587A0 (en) | 1983-02-16 |
| ES8304061A1 true ES8304061A1 (en) | 1983-02-16 |
Family
ID=8484033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES511587A Expired ES8304061A1 (en) | 1982-04-22 | 1982-04-22 | Process for the preparation of 1-chloro-2,6-dinitro-4- (trifluoromethyl)benzene |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES8304061A1 (en) |
-
1982
- 1982-04-22 ES ES511587A patent/ES8304061A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES511587A0 (en) | 1983-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19970303 |