http://rdf.ncbi.nlm.nih.gov/pubchem/patent/MX-169260-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B43-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B51-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B51-00 |
| filingDate | 1987-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9252ee324936b076910cac9a1ea9d83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de733ac84ea216ae868cac94eeab78f8 |
| publicationDate | 1993-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | MX-169260-B |
| titleOfInvention | PROCEDURE FOR PREPARING 2-NITRO-4-SULFAMIL-DIPHENYLAMINE DYES |
| abstract | The present invention relates to a process for preparing 2-nitro-4-sulfamyl-diphenylamine dyes of the general formula I: characterized in that o-nitrochlorobenzene is sulfonated with chlorosulfonic acid at temperatures of about 100 to 110 degrees C, to acid 4- chloro-3-nitrobenzenesulfonic of the formula: this is transformed with thionyl chloride, at approximately 70-80 degrees C, to high purity 4-chloro-3-nitrobenzene sulphlorchloride; The latter precipitates in a crystalline form when pouring the reaction mixture on ice and the obtained 4-chloro-3-nitrobenzene sulfochloride is immediately condensed with an aliphatic or aromatic amine of the general formula. |
| priorityDate | 1986-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.