http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-293805-A5
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3bfedd8ba4800708cecfd357707f8f67 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-67 |
| filingDate | 1990-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd97b7b992955a03654c081f9f6d0779 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26a08afdc46696dc30f2efa76d2ff3fd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_408a2cc8f2d85e9ce9469ced3b0feac6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5aba18bb66fe2b16ca334bd0c5ebd3cf |
| publicationDate | 1991-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-293805-A5 |
| titleOfInvention | PROCESS FOR PREPARING SUBSTITUTED 2- (5-OXO-PENT-2-EN-1-YLIDENES) -INDAN-1-ONE |
| abstract | The invention relates to a process for the preparation of substituted * of the formula III, in which R1, R2 and R3 are aryl radicals. Compounds of this type are useful as organic intermediates for the synthesis of polycyclic aromatic hydrocarbons. The title compounds are prepared according to the invention by adding pyrylium salts of formula I (R1-R3 aryl, X any anion) with indan-1-one (formula II) in the presence of a buffer component containing a dialkylamine or alkali metal salt of a weak acid, a trialkylamine or may be an equimolar mixture of trialkylamine and weak acid, converted into solvents such as lower aliphatic alcohols, halogenated hydrocarbons or dipolar aprotic solvents using temperatures up to the boiling point of the reaction mixture. {* organic intermediates; pyrylium; Indan-1-one} |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114380679-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114380679-A |
| priorityDate | 1990-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 74.