GB190004799A - The Manufacture of Para-amidophenyl Glyoxylic Acid, its Substitution Products and Homologues. - Google Patents
The Manufacture of Para-amidophenyl Glyoxylic Acid, its Substitution Products and Homologues.Info
- Publication number
- GB190004799A GB190004799A GB190004799DA GB190004799A GB 190004799 A GB190004799 A GB 190004799A GB 190004799D A GB190004799D A GB 190004799DA GB 190004799 A GB190004799 A GB 190004799A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- acids
- prepared
- amidophenyl
- homologues
- 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)
Abstract
4799. Johnson, G. W., [Boehringer & S÷hne, C. F.]. March 13. Amidophenylglyoxylic acids.-p-Amidophenylglyoxylic acid and its substitution derivatives and homologues are prepared (1) by oxidation in alkaline or acid solution of the corresponding p-amidophenyltartronic acids described in Specification No. 1088, A.D. 1900, or, (2) by treating amidophenyltartronyl ureides, or the acids obtained therefrom by means of dilute alkali in the cold according to the method of Pelizzari, with an oxidizing-agent in presence of an alkali. The oxidizing-agents employed include manganese peroxide, lead peroxide, mercuric oxide, ferric chloride, potassium permanganate, arsenic acid, and the like. The reaction proceeds, for example, according to the following equation:- Examples are given in which p-amidophenyl-,p-dimethylamidopbenylp-diethylamidophenyl-, p-amidom-tolyl-, and p-ethylenediamidodiphenyl.,p-methylamidophenyl-, p-ethylamidophenyl-, p-ethylamido-mtolyl-, p-amido-m-methoxyphenyl-, p-phenylamidophenyl-, and p-methylbenzylamidophenyl-glyoxylic acids are prepared from the corresponding tartronic acids. In other examples p-methylamidophenylglyoxylic acid is prepared from monomethylanilalloxan, p-dimethylamidophenylglyoxylic acid from the acid C11H12N2O3 of Pelizzari, p-amido-m-tolylglyoxylic acid from o-toluidinealloxan, and p-methylbenzylamidophenylglyoxylic acid from methylbenzylalloxan. The products are yellow crystalline compounds, and they yield, with phenylhydrazine, hydrazones the chlorides of which are soluble with difficulty in water. They are useful as starting points in the preparation of pharmaceutical products and dye-stuffs.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB190004799T | 1900-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB190004799A true GB190004799A (en) | 1900-05-19 |
Family
ID=32419623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB190004799D Expired GB190004799A (en) | 1900-03-13 | 1900-03-13 | The Manufacture of Para-amidophenyl Glyoxylic Acid, its Substitution Products and Homologues. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB190004799A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4703056A (en) * | 1983-01-21 | 1987-10-27 | Alkaloida Vegyeszeti Gyar | New alkyl diamine derivatives |
| US4731376A (en) * | 1983-01-20 | 1988-03-15 | Alkaloida Vegyeszeti Gyar | 2-(-(2,2,5,5-tetramethyl-3-pyrrolin-3-carbonyl))-amino derivatives |
-
1900
- 1900-03-13 GB GB190004799D patent/GB190004799A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4731376A (en) * | 1983-01-20 | 1988-03-15 | Alkaloida Vegyeszeti Gyar | 2-(-(2,2,5,5-tetramethyl-3-pyrrolin-3-carbonyl))-amino derivatives |
| US4703056A (en) * | 1983-01-21 | 1987-10-27 | Alkaloida Vegyeszeti Gyar | New alkyl diamine derivatives |
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