http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-980234-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_19aaaa9f91b7bf94ef9bdd9425970c0c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-02 |
| filingDate | 1961-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7707a0c663ed134074f53b29c2ca2301 |
| publicationDate | 1965-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-980234-A |
| titleOfInvention | Dibromobenzimidazole cyanine dyes |
| abstract | 1 - Ethyl - 2 - methyl - 5: 6 - dibromobenzimidazole is prepared by nitrating 1:3:4-tribromobenzene with nitric acid to give 2,4,5-tribromonitrobenzene, reacting this with ethylamine to give 2 - nitro - 4:5 - dibromo - N - ethylaniline, reducing the nitro group with catalytic hydrogen to give 2-ethylamino-4:5-dibromoaniline, and effecting ring closure by refluxing with acetic acid and hydrochloric acid. The product may be quaternized by heating with ethyl iodide or N-(bromoacetyl)-methane sulphonamide. Specification 904,332 is referred to.ALSO:The Specification relates to cyanine dyes comprising two heterocyclic nuclei linked by a methine radical or chain wherein one heterocyclic nucleus is a 5,6-dibromobenzimidazole nucleus and the other is a thiazoline, selenazoline or benzimidazole nucleus. In the examples, symmetrical dyes are prepared by reacting 1,3-diethyl-2-methyl-5,6-dibromobenzimidazolium iodide with ethyl orthoformate or with triethoxy-propene, and unsymmetrical dyes are prepared by condensing 1,3 - diethyl - 2 - methyl - 5,6 - dibromobenzimidazolium iodide with 1,3-diethyl-2-methylmercapto - 5,6 - dichlorobenzimidazolium methylsulphate or with 2-acetanilido-vinyl - 3 - ethyl - selenazolium iodide, or by condensing 1 - ethyl - 2 - methyl - 3 - (N-methylsulphonylcarbamylmethyl) - 5,6 - dibrobenzimidazolium bromide with 2-(b -acetanilidovinyl)-thiazolinium bromide to give a carbocyanine dye in the form of its internal salt. Specification 904,332 is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5422238-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5364755-A |
| priorityDate | 1961-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.