GB670774A - Preparation of dl-methionine - Google Patents
Preparation of dl-methionineInfo
- Publication number
- GB670774A GB670774A GB29484/47A GB2948447A GB670774A GB 670774 A GB670774 A GB 670774A GB 29484/47 A GB29484/47 A GB 29484/47A GB 2948447 A GB2948447 A GB 2948447A GB 670774 A GB670774 A GB 670774A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methionine
- nitrile
- preparation
- ammonia
- treating
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/48—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
dl-Methionine is prepared by treating b -methylmercaptopropionaldehyde with an alkali metal bisulphite to give the addition product, treating this with an inorganic cyanide to form b - methylmercaptopropionaldehyde cyanohydrin, reacting this with ammonia to give methionine nitrile, and hydrolysing the latter to dl-methionine. The preparation of the nitrile is preferably carried out using ammonia and ammonium chloride in methanol at 100 DEG C. In the examples, dl-methionine is prepared by the above sequence of reactions; the nitrile is hydrolysed to dl-methionine with aqueous hydrogen chloride.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US670774XA | 1946-12-20 | 1946-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB670774A true GB670774A (en) | 1952-04-23 |
Family
ID=22073564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29484/47A Expired GB670774A (en) | 1946-12-20 | 1947-11-05 | Preparation of dl-methionine |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB670774A (en) |
-
1947
- 1947-11-05 GB GB29484/47A patent/GB670774A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB670774A (en) | Preparation of dl-methionine | |
GB1080599A (en) | Improvements in and relating to l-ornithine l-aspartate | |
GB639962A (en) | Process for the production of melamine | |
GB1020492A (en) | A process for the preparation of ornithine | |
GB605311A (en) | Improvements in the manufacture of methionine | |
GB1352781A (en) | Process for the preparation of dl-methionine | |
GB677386A (en) | Improvements relating to the production of oximes | |
GB653803A (en) | Synthesis of the amino acid, d;1-methionine | |
CH268837A (en) | A process for the production of alkylene cyanohydrins. | |
GB867966A (en) | Process for the synthesis of methionine | |
GB645750A (en) | Improvements in and relating to the purification of polymyxin | |
GB616456A (en) | Improvements in or relating to the production of normal lead dinitroresorcinate | |
GB607231A (en) | Improvements in and relating to the production of ammonium sulphate | |
GB698271A (en) | Improvements in or relating to process of making 5-nitro-2-furaldehyde thiosemicarbazone | |
GB1120163A (en) | Method of producing sodium cyanoacetate | |
GB786007A (en) | Thiazolo-pyrimidines | |
GB991551A (en) | An amino cyano alkane sulphonate and the preparation of homocysteic acid therefrom | |
GB901559A (en) | Process for the dehydration of beta-hydroxycarboxylic acid nitriles | |
GB511430A (en) | Manufacture of ª‡-dimethylamino-acrylic acid nitrile | |
GB967458A (en) | Improved process for the preparation of cyanogen chloride | |
GB595038A (en) | Improvements in and relating to the manufacture of substituted benzene sulphonyl chlorides and of amides thereof | |
GB1024657A (en) | ||
GB619827A (en) | Process for the preparation of benzylamine and acyl derivatives thereof | |
GB619577A (en) | Process for making 1:4-dicyanobutene | |
GB589727A (en) | Improvements in the manufacture of growth promoting substances |