http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S56120697-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_630b360599ea5cf4b5bcbc0c6c0a3e2d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J21-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J75-00 |
| filingDate | 1980-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c12d46ff4ba81db378332303379a958 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5e624ce4752b821c2e62b9a2eb0b93a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ecde6b5f9cc367bb380a5faf5ac789fc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_38670ef1339793e0feb67c054fca5682 |
| publicationDate | 1981-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S56120697-A |
| titleOfInvention | Preparation of 4,6-diene-3-oxosteroid |
| abstract | PURPOSE: To prepare the titled compound useful as an intermediate of a diuretic, in high yield, by reacting 3-alkoxy-3,5-dienesteroid with chloranil in the presence of an acid catalyst, in a specific mixed solvent comprising water and a hydrophilic organic solvent. n CONSTITUTION: The titled compound is prepared by the dehydrogenation reaction of 3-alkoxy-3,5-dienesteriod with chloranil, in a mixed solvent comprising 7W 70vol%, pref. 10W50vol% of water, and remaining part of a hydrophilic organic solvent (e.g. THF, dioxane, etc.), in the presence of an acid catalyst. The 3- alkoxy-3,5-dienesteroid used as a raw material can be prepared by the enol-etherification of a 4-en-3-oxosteroid with an orthoester. When the enol-etherification and the dehydrogenation are carried out successively, the titled compound can be prepared easily, in higher yield. n COPYRIGHT: (C)1981,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EA-009176-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9721720-A3 |
| priorityDate | 1980-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.