http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62116538-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fb2edb0f237a90d982f2dce09ad61976 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-79 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-788 |
| filingDate | 1985-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3a8b4a6ef3ac989c3d90ab174a453533 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_db51b922c6296cc3cfa24e4dff861b05 |
| publicationDate | 1987-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S62116538-A |
| titleOfInvention | Purification of crude 1,4,4a,9a-tetrahydroanthraquinone |
| abstract | PURPOSE: The titled crude compound resulting from the Diels-Alder reaction of butadiene with 1,4-naphthoquinone prepared by oxidation of naphthalene is treated with an aliphatic alcohol to effect simple, high-yield and high-purity purification. n CONSTITUTION: Naphthalene is oxidized to give 1,4-naphthoquinone. The quinone and butadiene are subjected to Diels-Alder reaction to give crude 1,4,4a,9a- tetrahydroanthraquinone (THAQ). The resultant THAQ is treated with an aliphatic alcohol of 1W6 carbon atoms, preferably methanol, ethanol, n-propanol, i-propanol, n-butanol to readily give THAQ of high purity in higher yield than that in the conventional purification manner. The alcohol is preferably used in the form of an aqueous alcohol of less than 30% water content. n COPYRIGHT: (C)1987,JPO&Japio |
| priorityDate | 1985-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.