http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-240745-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_eab56e4fe8837840887f41af83e328ee |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D335-02 |
| filingDate | 1985-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43a161d418b4dd557966aa3a813253c3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_caa397c0cfbc415292776296542357e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6df5fde6fe66371afc9ee794be1f8ce3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05d6cdaa2961e1a6e9b4ff8ff847ca56 |
| publicationDate | 1986-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-240745-A1 |
| titleOfInvention | PROCESS FOR PREPARING 5,6-SUBSTITUTED 2-ALKYLTHIOPYRYLIUM SALTS |
| abstract | The invention relates to the field of organic synthesis chemistry and has a method for the target, with the 5,6-substituted 2-alkyl-thiopyrylium salts (XClO4) with alkyl or benzyl radicals in the position 2, hydrogen radicals in the positions 3 and 4 and the same or different aryl radicals in positions 5 and 6 of the ring can be obtained. The invention has for its object to produce 2-alkyl-thiopyrylium salts of the formula III. According to the invention, the object is achieved by nucleophilic substitution in aldol condensation products of the formula I in which R 1 and R 2 are identical or different aryl radicals and R 5 is hydrogen, alkyl or aryl radicals, the isolated mercapto compound II is substituted by Na 2 S in a suitable alcohol (R1, R2, R5: as above) cyclized with POX3 (XCl, Br) and the intermediate formed with aqueous perchlorate solution to the final product III. Formulas I, II and III |
| priorityDate | 1985-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.