http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-516342-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_17e9086318bc50e2503e6010ac0b0d11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70516eb139f8328a3a4e5af44858676c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-44 |
| filingDate | 1938-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1940-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-516342-A |
| titleOfInvention | Manufacture of new compounds |
| abstract | 516,342. Dye intermediates. DREW, H. D. K., KELLY, D. B., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 28, 1938, No. 12784. [Class 2 (iii)] Components of the formula:- (wherein A stands for an o-arylene radical of the benzene or naphthalene series which may carry substituents, e.g. chlorine, methyl, methoxy, nitro or amino) are made by treating an odinitrile of the benzene or naphthalene series, in a hydroxylic solvent, with hydrogen sulphide or an ammonium sulphide or both, or with hydrogen sulphide in presence of an alkali or alkaline earth metal hydroxide or carbonate. The ammonium sulphide may be formed in situ either from ammonia and hydrogen sulphide or from an alkali metal sulphide and an ammonium salt of a strong acid, e.g. ammonium chloride. Water and ethyl alcohol are suitable hydroxylic solvents. Ih examples, the following bodies are treated with hydrogen sulphide and aqueous .ammonia in alcoholic solution : (1) phthalonitrile, (2) 4-aminophthalonitrile, (3) napthalene-1.2-dinitrile, (4) 4.5-dichlorophthalonitrile, (5) 4-nitrophthalonitrile (giving a nitroamino body), (6) 4-chlorophthalonitrile. Also in examples, phthalonitrile is reacted in alcoholic solution with (7) hydrogen sulphide only, (8) ammonium sulphide, (9) ammonium chloride and sodium sulphide solution, (10) sodium hydroxide and hydrogen sulphide (11) sodium carbonate and hydrogen sulphide, (12) barium hydroxide and hydrogen sulphide. The product is in each case extracted with carbon disulphide to remove the free sulphur liberated. |
| priorityDate | 1938-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.