http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-874809-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/C09B23-0091 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-12 |
| filingDate | 1959-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3d24cdf456027995e392c541efbfb667 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b6405d96538478cfd1041cde4920e49b |
| publicationDate | 1961-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-874809-A |
| titleOfInvention | Improvements in or relating to dyestuffs |
| abstract | Compounds of the general formula:- <FORM:0874809/IV (b)/1> wherein R1 is an alkyl, aryl or aralkyl group are prepared by reacting a 3-substituted oxindole with phosphorus pentasulphide to give a 3-substituted-indoline-2-thione which is then reacted with chloracetic acid to give a 2-carboxymethyl-thio derivative, which is then treated with acetic anhydride to cause ring closure. An example is given wherein R1 is methyl.ALSO:Dyes having one of the general formulae:- <FORM:0874809/IV(c)/1> and <FORM:0874809/IV(c)/2> wherein R1 is an alkyl, aryl or aralkyl group, R2 is an alkyl, hydroxyalkyl, carboxyalkyl, sulphoalkyl or aralkyl group, R3 and R4 are alkyl groups, n and m are 0 or 1 and D completes a 5- or 6-membered nucleus, are prepared by condensing a compound of formula I:- <FORM:0874809/IV(c)/3> with a quaternary cyclammonium salt having a reactive alkylthio, alkylthiovinyl or acetanilidovinyl group, or with a p-dialkylaminobenzaldehyde. Examples of dyes are given wherein R1 is methyl or phenyl and D completes a benzthiazole, benzoxazole, indolenine or 2- or 4-quinoline nucleus. |
| priorityDate | 1959-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.