GB903404A - Process for the manufacture of halo-aminobenzoic acids and their salts, esters and amides - Google Patents
Process for the manufacture of halo-aminobenzoic acids and their salts, esters and amidesInfo
- Publication number
- GB903404A GB903404A GB1139459A GB1139459A GB903404A GB 903404 A GB903404 A GB 903404A GB 1139459 A GB1139459 A GB 1139459A GB 1139459 A GB1139459 A GB 1139459A GB 903404 A GB903404 A GB 903404A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amino
- benzoic acid
- halo
- chloro
- ester
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
A solution of a halo-nitrobenzoic acid, or salt, ester, or amide thereof, in an alcohol having 1-3 carbon atoms or in a corresponding ether, is subjected to reduction with hydrogen in the presence of a nickel-alumina catalyst at a pressure between 80 and 120 abs. atm. and temperature between 40 and 150 DEG C. so as to obtain a halo-amino-benzoic acid or a salt, ester, or amide thereof. Examples are given of the preparation of 4-chloro-2-amino-benzoic acid, 2-chloro-4-amino-benzoic acid methyl ester, 2-chloro-4-amino-benzoyl - (b -di - ethyl amino-ethyl)-amido-hydrochloride, 2-bromo-4-amino-benzoic acid ethyl ester, and 2-chloro-4-amino-benzoic acid b -diethyl-amino-ethyl ester hydrochloride. Solvents specified are methanol, ethanol, and di-n-propyl ether.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT288958A AT206888B (en) | 1958-04-21 | 1958-04-21 | Process for the preparation of halo-aminobenzoic acids and their derivatives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB903404A true GB903404A (en) | 1962-08-15 |
Family
ID=3541903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1139459A Expired GB903404A (en) | 1958-04-21 | 1959-04-03 | Process for the manufacture of halo-aminobenzoic acids and their salts, esters and amides |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT206888B (en) |
| BE (1) | BE576810A (en) |
| CH (1) | CH380743A (en) |
| FR (1) | FR1219962A (en) |
| GB (1) | GB903404A (en) |
| NL (1) | NL237001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3530181A (en) * | 1965-02-03 | 1970-09-22 | Shell Oil Co | Herbicidal benzamides |
-
0
- NL NL237001D patent/NL237001A/xx unknown
- BE BE576810D patent/BE576810A/xx unknown
-
1958
- 1958-04-21 AT AT288958A patent/AT206888B/en active
-
1959
- 1959-02-17 CH CH6965559A patent/CH380743A/en unknown
- 1959-04-03 GB GB1139459A patent/GB903404A/en not_active Expired
- 1959-04-15 FR FR792151A patent/FR1219962A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3530181A (en) * | 1965-02-03 | 1970-09-22 | Shell Oil Co | Herbicidal benzamides |
Also Published As
| Publication number | Publication date |
|---|---|
| BE576810A (en) | |
| AT206888B (en) | 1959-12-28 |
| FR1219962A (en) | 1960-05-20 |
| NL237001A (en) | |
| CH380743A (en) | 1964-08-15 |
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