http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-394995-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b04f5b6a02051c94d6eaf190b751ed2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C46-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-00 |
| filingDate | 1931-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1933-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-394995-A |
| titleOfInvention | Manufacture of halogen derivatives of the anthraquinone series |
| abstract | Halogen dianthraquinonyls, or halogen-diphthaloylnaphthalenes are obtained by nearly or completely halogenating in presence of a diluent and actinic light, the methyl groups of a dihalogen-2 : 2<1>-dimethyl-10-10<1>-dibenzophenonyl (obtainable by condensing a 4 : 4<1>-diphenyl dicarboxylic acid halide with a m-halogen-toluene) or the methyl groups of a 1 : 5-di-methyl-halogen benzoyl)-naphthalene, (obtainable by condensing a 1 : 5-naphthalene dicarboxylic acid halide with a m-halogen-toluene), followed by treatment with a simultaneously saponifying and ring-closing agent. According to examples (1) the product obtained by condensing 4 : 4<1>-diphenyldicarboxylic-dichloride with 3-chloro-1-methylbenzene is completely halogenated in the methyl groups to give 2 : 2<1>-di-(o -trichloromethyl) 4 : 4<1>-dichloro-1 : 1<1>-dibenzophenone, which is treated with concentrated sulphuric acid to give 7 : 7<1>-dichloro-2 : 2<1>-dianthraquinonyl; (2) the product obtained by condensing 3-chloro-1-methyl-benzene with 1 : 5-naphthalene dicarboxylic dichloride, which is a mixture of three isomeric 1 : 5-di-(methyl-chlorbenzoyl) naphthalenes is chlorinated in the methyl groups as above, and the product treated with concentrated sulphuric acid. Carboxylic acids which may have been formed by the saponification of the products obtained by chlorination of the two isomers containing methyl groups in p-position to the ketonic group of the above compounds are removed with sodium carbonate producing b : b <1> - dichlorodiphthaloylnaphthalene. |
| priorityDate | 1931-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.