GB1237858A - Process for the production of adenine - Google Patents
Process for the production of adenineInfo
- Publication number
- GB1237858A GB1237858A GB4667769A GB4667769A GB1237858A GB 1237858 A GB1237858 A GB 1237858A GB 4667769 A GB4667769 A GB 4667769A GB 4667769 A GB4667769 A GB 4667769A GB 1237858 A GB1237858 A GB 1237858A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hcn
- liquid ammonia
- adenine
- valeric
- alkali metal
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C7/00—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects
- B63C7/26—Means for indicating the location of underwater objects, e.g. sunken vessels
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
1,237,858. Adenine and 4,5-dicyanoimidazole. AJINOMOTO CO. Inc. 22 Sept., 1969 [5 Oct., 1968], No. 46677/69. Addition to 1,010,256. Heading C2C. Adenine is prepared by heating HCN, or a mixture of an alkali metal cyanide with a substantially equivalent amount of the ammonium salt of an acid stronger than HCN, in liquid ammonia in the presence of a carboxylic acid, having at least 3 carbon atoms, which is soluble in liquid ammonia, or the ammonium salt of said carboxylic acid, the quantity of water, if any, present in the reaction system being not greater than 10 mole per cent of the total reaction system. The temperature of the reaction is 60-200‹ C., preferably from 70-150‹ C., employing from 1-10 moles liquid ammonia/ mole HCN or alkali metal cyanide, and suitable carboxylic acids are those of pK a between 4À0 and 5À1, e.g. propionic, butyric, isobutyric, valeric, trimethylacetic, cyclohexanecarboxylic, lactic, glycollic, valeric, aspartic, glutamic, benzoic, -methylbenzoic, o-, m- and p-aminobenzoic, m- and p-hydroxybenzoic, and phenylacetic acid. 4,5-Dicyano-imidazole is obtained as a by-product, which is separated, e.g. by selective extraction, absorption on a weakly basic anion exchange resin, or by formation of a water-insoluble salt, e.g. with lead or mercury.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7261068 | 1968-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1237858A true GB1237858A (en) | 1971-06-30 |
Family
ID=13494318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4667769A Expired GB1237858A (en) | 1968-10-05 | 1969-09-22 | Process for the production of adenine |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH495369A (en) |
| DE (1) | DE1949091A1 (en) |
| FR (1) | FR2020002A1 (en) |
| GB (1) | GB1237858A (en) |
-
1969
- 1969-09-22 GB GB4667769A patent/GB1237858A/en not_active Expired
- 1969-09-29 DE DE19691949091 patent/DE1949091A1/en active Pending
- 1969-10-03 CH CH1495369A patent/CH495369A/en not_active IP Right Cessation
- 1969-10-03 FR FR6933907A patent/FR2020002A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2020002A1 (en) | 1970-07-10 |
| CH495369A (en) | 1970-08-31 |
| DE1949091A1 (en) | 1970-04-16 |
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