http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004189695-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9df90d7822cc480ce12c480f4089e229 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D335-06 |
| filingDate | 2002-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7163ab890451a1905cd11d12ed1d84dd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81c405da6b7a7e6040502ddec0788ac1 |
| publicationDate | 2004-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2004189695-A |
| titleOfInvention | Method for producing chromanones or thiochromanones |
| abstract | An object of the present invention is to produce 4-chromanone or 4-thiochromanone, which is useful as a synthetic intermediate of medicinal and agricultural chemicals, at low cost and easily in high yield by dehydration cyclization of 3-phenoxypropionic acid or 3-phenylthiopropionic acid, respectively. A method of manufacturing is provided. The general formula (I) Embedded image (Wherein, R 1 to R 8 each represent a group that does not participate in the reaction. A represents an oxygen or sulfur atom.) The carboxylic acid represented by the general formula (II) MXm ・ Ln (II) (Wherein, M represents a metal ion selected from Bi, Ga, In, Hf, and a rare earth element, X represents an anion, L represents a neutral molecule having a coordinating power to M. m represents the metal M A valence number and n is an integer of 0 to 10.) General formula (III) in which a cyclization reaction is carried out in the presence of a catalytic amount of a Lewis acid represented by Embedded image (Wherein, R 1 to R 8 and A have the same meanings as described above.) A method for producing 4-chromanone or 4-thiochromanone represented by the formula: [Selection diagram] None |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2145931-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2042563-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101846883-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1944173-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012117905-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2145932-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2388146-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2085439-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1975210-A1 |
| priorityDate | 2002-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.