http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-775386-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_315d611c240458b1308de8455144105a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-105 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-02 |
| filingDate | 1954-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce1cf2a007d071b2dbb1f80d0f8e83e6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3d24cdf456027995e392c541efbfb667 |
| publicationDate | 1957-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-775386-A |
| titleOfInvention | Improvements in or relating to cyanine dyes |
| abstract | Cyanine dyes having one of the general formulae:-<FORM:0775386/IV(b)/1> and <FORM:0775386/IV(b)/2> wherein R1 is a 'lower' alkyl group (i.e. of up to 4 carbon atoms), R2 is a lower alkyl or aralkyl or hydroxyalkyl group, R3 is a 'lower' alkyl or aralkyl group, R4 is H or a 'lower' alkyl group, n and m are 0 or 1, X is an anion and D1 and D2 complete cyclic nuclei, are prepared by condensing a quaternary salt of the formula:- <FORM:0775386/IV(b)/3> with a compound of formula:- <FORM:0775386/IV(b)/4> wherein Q is -SR, -CH = CH - SR or an actanilido-vinyl group and R is a 'lower' alkyl group, or with a compound of formula:- <FORM:0775386/IV(b)/5> Instead of using the quaternary salts of formula III or IV above, the corresponding bases may be used with an equivalent amount of quaternizing salt. Instead of using a compound of formula V above, the corresponding cyclic keto-methylene compound may be used with a molecular proportion of an alkyl ortho ester. Symmetrical trimethine cyanines wherein D1 completes a 3 - alkylthio - 4:4 - dimethyl - 6 - pyridazinine nucleus are prepared by condensing two molecular proportions of compound III with one molecular proportion of an alkyl orthoformate. R1, R2 and R3 are preferably methyl or ethyl groups and R4 is preferably H, methyl or ethyl. In the examples D1 completes a benzthiozole (including 5 - chloro - benzthiazole), naphthathiazole, benzoxazole (including 6 - methoxy-, 5 - phenyl - and 5 : 6 - dimethyl - benzoxazoles), indolenine, quinoline, pyridazinine or 1 : 3 : 4 - thiadiazole nucleus and D2 completes a rhodanine, thiohydantain, 5 - pyrazolone or 5 - oxazolone nucleus. Specification 774,724 [Group IV(b)] is referred to. |
| priorityDate | 1954-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.