http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0019872-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D335-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B57-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D335-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B57-14 |
| filingDate | 1980-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6bd1bf6bcf4cdbcb7ea9c026a104d09d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7b7dc3753ee5c830ad7b0b7b2b15ec9a |
| publicationDate | 1980-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0019872-A1 |
| titleOfInvention | Process for the preparation of benzoxanthene and benzothioxanthene dyestuffs |
| abstract | Mixtures of isomers of dyes of the formulas and wherein X is an oxygen or sulfur atom, R is an optionally substituted alkyl radical, acyl radical or benzenesulfonyl radical, R 1 and R 2 are hydrogen or halogen atoms, alkyl, phenyl, acyl, acyloxy, carbalkoxy, alkoxy, nitro, alkylthio or alkylsulfonyl groups or together a fused benzene ring, R 3 and R 4 are hydrogen or halogen atoms, phenyl groups, alkyl, alkoxy, carbalkoxy groups with 1 to 4 carbon atoms or nitrile groups, R 5 and R 6 are hydrogen atoms or optionally substituted alkoxy groups with 1 up to 4 carbon atoms mean are by condensation of the corresponding benzoxanthene or benzothioxanthene-3,4-dicarboxylic acid anhydrides or esters with phenylacetic anhydrides or esters in the presence of alkali at about 150-260 ° C and subsequent alkylation or acylation of the hydroxy compounds thus obtained without them Obtain previous isolation if you carry out condensation and alkylation or acylation in a polar organic solvent. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4377703-A |
| priorityDate | 1979-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 102.