http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S562987-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K15-06 |
| filingDate | 1979-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a48cb8be90afcd3b9f41ff9c47b2ea2 |
| publicationDate | 1981-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S562987-A |
| titleOfInvention | Flavan derivative and its preparation |
| abstract | NEW MATERIAL:A flavan derivative of formula I (R 1 , R 1 ' are alkyl, aryl, or aralkyl; R 2 , R 2 ' are H, alkyl, aryl or aralkyl; R 1 and R 2 or R 1 ' and R 2 ' may together form a cycloalkyl ring). n EXAMPLE: 2, 3-Tetramethylene-4, 4-pentamethylene-6, 7-4', 5'-dimethylenedioxy- 2'-hydroxyflavan. n USE: Antioxidant, an agent for separation and purification treatment, medicine, pesticide, and their intermediate. n PROCESS: Sesamol of formula II is made to react with a chain or cyclic ketone of formula R 1 COCH 2 R 2 (e.g. acetone, methyl ethyl ketone, acetophenone, etc.) in a solvent such as benzene, aromatic hydrocarbon, etc., pref. in the presence of an acidic catalyst such as hydrochloric acid, benzenesulfonic acid, etc., to afford the compound of formula I. n COPYRIGHT: (C)1981,JPO&Japio |
| priorityDate | 1979-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.