http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-95106128-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be5b29c67e2ed8456c1fa00ab794884f |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-175 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-255 |
| filingDate | 1995-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22f102cc5dfd17b3cebd20d7fdad9b8c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d16a223d8d6d854ab3edda095bfad76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05234d0fedfc7cdfa39465790c295300 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a76e8c0ec28908d440a863678b3ef18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_222b769722bf5e13904357e8ba83e25d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80a8082e71d78ec62e110930f0ae86fa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c5f291b865ccb140c6aafba48a2bc40 |
| publicationDate | 1997-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-95106128-A |
| titleOfInvention | Method for production of $$$-ketoacetals of $$$ or $$$ |
| abstract | 1. The method of producing β-ketoacetals C-14 or C-19 by condensing the corresponding ketone C-13 or C-18 with an alkyl formate in an anhydrous organic solvent in the presence of a sodium alcoholate catalyst at 15-25 ° C, followed by acetalization of the obtained ketoenolate with low molecular weight alcohol taken in excess with respect to the initial ketone, in the presence of an acid catalyst - sulfuric acid at the same temperature, characterized in that the low molecular weight alcohol is used at a molar ratio of ketone: alcohol of 1: 30-45 and introduced into and in the stage, in the first stage, alcohol is introduced after the ketone is added in an amount of 25-75 wt.% of the weight of the initial ketone, followed by exposure to a homogeneous, easily moving mass, in the second stage, the alcohol is introduced directly into acetalization pre-mixed with sulfuric acid and refrigerated to (- 5) - (-20) C.2. The method according to claim 1, characterized in that methyl formate is used as the alkyl formate, and methanol is used as the low molecular weight alcohol. |
| priorityDate | 1995-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.