ES271292A1 - Improvements in or relating to producing 2, 3, 6-trichlorobenzoic acid - Google Patents
Improvements in or relating to producing 2, 3, 6-trichlorobenzoic acidInfo
- Publication number
- ES271292A1 ES271292A1 ES0271292A ES271292A ES271292A1 ES 271292 A1 ES271292 A1 ES 271292A1 ES 0271292 A ES0271292 A ES 0271292A ES 271292 A ES271292 A ES 271292A ES 271292 A1 ES271292 A1 ES 271292A1
- Authority
- ES
- Spain
- Prior art keywords
- acid
- amide
- treatment
- treated
- trichlorobenzoic
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
- C07C63/68—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings containing halogen
- C07C63/70—Monocarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/06—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid amides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/08—Preparation of carboxylic acids or their salts, halides or anhydrides from nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
2,3,6-Trichlorobenzoic acid is made by subjecting 2,3,6-trichlorobenzonitrile to a treatment known per se for conversion of aromatic nitriles to corresponding aromatic carboxylic acids. The 2,3,6-trichloro-benzonitrile may be first converted into the carboxylic acid amide by the action of a base or a mineral acid and further hydrolysing the amide to the acid. For example, the nitrile may be treated with alcoholic alkali, preferably sodium or potassium hydroxide, to convert it to the amide, which is then treated with nitrosyl-sulphuric acid to produce the carboxylic acid. The 2,3,6-trichlorobenzonitrile may be made as described in Specification 947,167, or by treatment of a corresponding dichloronitrobenzonitrile, preferably the 2,3-dichloro-6-nitro compound, with chlorine at an elevated temperature.ALSO:A herbicidal composition contains as active constituent 2, 3, 6-trichlorobenzoic acid produced by subjecting 2, 3, 6-trichlorobenzointrile to a treatment known per se for the conversion of aromatic nitriles to aromatic carboxylic acids, for example by treatment of the nitrile with alcoholic alkali to form the amide which is treated with nitrosyl-sulphuric acid to give 2, 3, 6-trichlorobenzoic acid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL257082A NL257082A (en) | 1960-10-20 | 1960-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES271292A1 true ES271292A1 (en) | 1962-04-01 |
Family
ID=19752643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0271292A Expired ES271292A1 (en) | 1960-10-20 | 1961-10-17 | Improvements in or relating to producing 2, 3, 6-trichlorobenzoic acid |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE1144256B (en) |
ES (1) | ES271292A1 (en) |
FR (1) | FR1303968A (en) |
GB (1) | GB1008563A (en) |
NL (1) | NL257082A (en) |
-
1960
- 1960-10-20 NL NL257082A patent/NL257082A/xx unknown
-
1961
- 1961-10-17 ES ES0271292A patent/ES271292A1/en not_active Expired
- 1961-10-17 GB GB3717461A patent/GB1008563A/en not_active Expired
- 1961-10-17 DE DE1961N0020683 patent/DE1144256B/en active Pending
- 1961-10-19 FR FR876388A patent/FR1303968A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL257082A (en) | 1964-04-10 |
FR1303968A (en) | 1962-09-14 |
DE1144256B (en) | 1963-02-28 |
GB1008563A (en) | 1965-10-27 |
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