http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-494326-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B1-40 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B1-40 |
| filingDate | 1937-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1938-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-494326-A |
| titleOfInvention | Anthraquinone derivatives and their manufacture |
| abstract | Nitroformylaminoanthraquinones are made by nitration of formylaminoanthraquinones. The products may be reduced to aminoformylaminoanthraquinones and then hydrolysed to polyaminoanthraquinones, or hydrolysed to nitroaminoanthraquinones followed by reduction. The reduction and hydrolysis may also be carried out simultaneously. When two formylamino groups are present the anthraquinone can be mono- or di-nitrated, according to the amount of nitrating agent. In examples: (1) 1.5-diformylaminoanthraquinone is dinitrated to 1,5-diformylamino4.8 - dinitroanthraquinone, which may be hydrolysed to 1.5-diamino-4.8-dinitroanthraquinone with sulphuric acid or caustic soda, followed by reduction to 1.4.5.8-tetraaminoanthraquinone, or reduced to 1.5-diformlyamino-4.8-diaminoanthraquinone, followed by hydrolysis with sulphuric acid; (2) 1,5-diformylaminoanthraquinone is mononitrated to 1.5 - diformylamino - 4 - nitroanthraquinone, hydrolysed and reduced, or reduced to 1.5-diformylamino - 4 - aminoanthraquinone; (3) 1.8 - diformylaminoanthraquinone is mononitrated to 1.8-diformylamino - 4 - nitroanthraquinone, which may be reduced, or hydrolysed and reduced; (4) 1-formylaminoanthraquinone is mononitrated to 1-formylamino - 4 - nitroanthraquinone, which may be hydrolysed or reduced, or hydrolysed and reduced simultaneously; (5) 1.5-diformylamino - 4.8 - dinitroanthraquinone is reduced and hydrolysed simultaneously. Formylaminoanthraquinones may be obtained from aminoanthraquinones and formic acid or from halogenanthraquinones and formamide, according to Specification 494,320. |
| priorityDate | 1936-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.