http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1413392-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_01dc8a8a3ae90ebd3658b65c494e2a4d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-384 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-384 |
| filingDate | 1973-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1975-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1413392-A |
| titleOfInvention | 2-pyrazolin-5-one derivatives as magenta-forming colour couplers for silver halide emulsions |
| abstract | 1413392 2 - Pyrazolin - 5 - one derivatives AGFA-GEVAERT 5 March 1973 [8 March 1972] 10469/73 Heading C2C [Also in Division G2] Novel magenta-forming colour couplers have the Formula I wherein: R 1 represents an alkyl, substituted alkyl, aryl or substituted aryl group; Y represents hydrogen or a substituent group; R 2 represents either (a) an acyclic aliphatic C 5 -C 20 hydrocarbon group, or (b) a phenyl group containing a substituent of the formula -X-D wherein D is an acyclic aliphatie C 5 -C 20 hydrocarbon group and X is a chemical bond, oxygen, sulphur, sulphonyl, -CONH-, -NHCO- or -SO 2 N(R)-, wherein R is hydrogen or an alkyl group, and R 3 represents hydrogen or an alkyl group, or possibly an aryl group when R 2 has the significance (a). The compounds of Formula I are prepared by reacting a pyrazolinone of Formula II with a strong acid salt (e.g. the hydrochloride) of an aromatic primary amine compound of Formula III The preparation is preferably effected in an organic aliphatic acid medium (e.g. acetic acid). The coupler, 1 -phenyl-3-[(2-hexadecyloxy-5- sulpho - phenyl) - p - aminocarbonylphenyl amino] - 2 - pyrazolin - 5 - one sodium salt is obtained by sulphonation using c. H 2 SO 4 . Also prepared are the intermediates p-nitrobenzoyl - o - hexadecylthio - m - fluorosulphonylanilide and p - nitrobenzoyl - o - hexadecylsulphonyl - m - fluorosulphonylanilide from p-nitrobenzoyl chloride and the corresponding substituted aniline, the nitro compounds being then reduced to the corrsponding aniline derivatives of Formula III (hydrochlorides) by H 2 /Raney nickel. |
| priorityDate | 1972-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.