ES137907A1 - PROCEDURE FOR OBTAINING 1-2 DIAMINOBENZOLE - Google Patents
PROCEDURE FOR OBTAINING 1-2 DIAMINOBENZOLEInfo
- Publication number
- ES137907A1 ES137907A1 ES0137907A ES137907A ES137907A1 ES 137907 A1 ES137907 A1 ES 137907A1 ES 0137907 A ES0137907 A ES 0137907A ES 137907 A ES137907 A ES 137907A ES 137907 A1 ES137907 A1 ES 137907A1
- Authority
- ES
- Spain
- Prior art keywords
- copper
- aqueous ammonia
- diaminobenzene
- dichlorobenzene
- atmospheres
- 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
1 : 2 Diaminobenzene is obtained from 1 : 2-dichlorobenzene or 1-amino-2-chlorobenzene by treating the chloro compound at about 150 DEG C. in presence of copper, with aqueous ammonia, the pressure being maintained throughout at least at about 80 atmospheres. The copper is added as a mixture of a copper salt and metallic copper and preferably in such quantity as to ensure the presence of metallic copper throughout the reaction, to combine with the 1 : 2 diaminobenzene formed. Specification 3966/08, [Class 2], is referred to. According to examples, o-dichlorobenzene, and o-chloraniline are treated with aqueous ammonia in presence of cupric or cuprous chloride and copper, ammonia being passed in to maintain pressures of from 80 to 100 atmospheres for 10 to 20 hours. The product is isolated from its copper compound by acidifying, precipitating the copper as sulphide, and basifying the filtrate. A sample has been furnished under Sect. 2 (5) of the product obtained when using somewhat different proportions of aqueous ammonia, cupric chloride, and fragmentary copper.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH440697X | 1934-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES137907A1 true ES137907A1 (en) | 1935-08-16 |
Family
ID=4515185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0137907A Expired ES137907A1 (en) | 1934-04-12 | 1935-04-11 | PROCEDURE FOR OBTAINING 1-2 DIAMINOBENZOLE |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES137907A1 (en) |
| GB (1) | GB440697A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924294A (en) * | 2012-10-22 | 2013-02-13 | 江苏康恒化工有限公司 | Method for preparing o-phenylenediamine from o-chloroaniline |
| CN105085277A (en) * | 2014-05-22 | 2015-11-25 | 江苏扬农化工集团有限公司 | Method for preparing 2,3-/2,6-dichloroaniline |
| CN105037171B (en) * | 2015-06-08 | 2017-03-08 | 江阴市华亚化工有限公司 | A kind of o-dichlorohenzene prepares the synthetic method of o-phenylenediamine |
-
1935
- 1935-04-04 GB GB10486/35A patent/GB440697A/en not_active Expired
- 1935-04-11 ES ES0137907A patent/ES137907A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB440697A (en) | 1936-01-03 |
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