http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-693624-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/C09B23-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-08 |
| filingDate | 1950-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_923bf6b5f705525fa33090d48afdec86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3d24cdf456027995e392c541efbfb667 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1147d97fdc06a06563b5209ef2a87bbf |
| publicationDate | 1953-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-693624-A |
| titleOfInvention | Improvements in or relating to dyestuffs |
| abstract | Dyes of the general formula <FORM:0693624/IV (c)/1> wherein R1 is alkyl, R2 and R3 are alkyl o aralkyl, D1 and D2 are the residues of the same or different five- or six-membered heterocyclic nuclei, m and n are 0 or 1, x is 0, 1 or 2, and X is an acid radicle, are prepared by condensing compounds of the general formula <FORM:0693624/IV (c)/2> with compounds of the general formula <FORM:0693624/IV (c)/3> wherein Q is -SR4 (wherein R4 is an alkyl, aralkyl, or aryl group) or an amino or substituted amino (preferably acetamino or acetanilido) group, preferably by heating the reactants in the presence of a basic condensing agent such as pyridine or triethylamine. The second reactant may be formed in situ when Q is -SR5 by reacting a trialkyl trithio orthoformate, in the presence of acetic anhydride with a corresponding quaternary salt of a heterocyclic compound containing a reactive methyl group in a - or g -position to the quarternary nitrogen atom. 3 : 31 - Dimethyl - 9 - ethoxythiadicarbocyanine iodide is prepared by heating together 2-methylthiobenzthiazole with methyl p-toluenesulphonate, adding 2 : 41-ethoxypentadienyl benzthiazole methochloride, dissolving by warming in ethanol, adding triethylamine, boiling, and pouring into aqueous potassium iodide. 3 : 31-Dimethyl - 9 - methoxythiadicarbocyanine iodide, 3 : 31 - dimethyl - 11 - methyloxathiadicarbocyanine iodide, 1 : 3 : 3 : 31 - tetramethyl - 11 - methoxyindothiadicarbocyanine iodide, and 3 : 11 - dimethyl - 9 - methoxythiaquino - (21) - dicarbocyanine iodide are similarly prepared. 1 : 31 - Dimethyl - 11 - ethoxyindothiatricarbocyanine iodide is prepared by heating together 2 : 41 - ethoxypentadienylbenzthiazole methochloride and 2-21-ethylthiovinyl-3 : 31-dimethylindolenine methodide in ethanol containing triethylamine and pouring into aqueous potassium iodide. Specification 693,623, [Group IV (b)], is referred to. |
| priorityDate | 1950-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.