http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-235455-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_da9c519bc5d52cdf9e2c478e123d9f7b |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D335-02 |
| filingDate | 1985-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2de987df450de6e7bc86e5eabce6e643 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7ae844ef9fbea74db3c9627e47d71201 |
| publicationDate | 1986-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-235455-A1 |
| titleOfInvention | PROCESS FOR THE PREPARATION OF 2-ACETONYL-2H-THIOPYRANESE |
| abstract | The invention relates to the field of organic synthetic chemistry and has a method to target, with the 2-acetonyl-2H-thiopyrans of the general formula III, in which R1, R2 and R3 aryl radicals, can be obtained from readily available starting materials. The invention has for its object to produce such 2-acetonyl-2H-thiopyrans from 2,4,6-triaryl-thiopyryliumsalzen and acetone. The object is achieved in accordance with the invention by using thiopyrylium salts of the formula I in which R.sup.1, R.sup.2 and R.sup.3 are aryl radicals and X is an arbitrary anion, with acetone and an amine salt of the formula II in which R.sup.4 and R.sup.5 are identical, different or linked together alkyl radicals and HY signify a proton acid, and reacting as solvent either excess acetone or other suitable solvents, eg. As halogenated hydrocarbons, such as methylene chloride, chloroform or carbon tetrachloride, used and applies temperatures up to the boiling point of the reaction mixture. Type III compounds can be used as organic intermediates due to the possibility of modification of the acetonyl group and / or the thiopyran system. |
| priorityDate | 1985-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.