http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0098291-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cae71083b119f18009470b1882e54e4d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-80 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-00 |
| filingDate | 1982-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d12ad842b65cb8e0f0bd312556647e06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d0a5cb44eb2482dcd409ae7a65c56e5 |
| publicationDate | 1984-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0098291-A1 |
| titleOfInvention | Purification of tetrahydrodibenzo(b,d)pyrans from crude synthetic mixtures |
| abstract | (-) - 6a, 10a-Trans-1-hydroxy-3-n-pentyl-6,6,9-trimethyl-6a, 7,8,10a-tetrahydrodibenzo ADb, d BDpyrrane or any of its relative pyranes in which the n-pentyl group is replaced by a hydrogen or a C1-C10 alkyl is isolated from a crude synthetic mixture by a process consisting in esterifying the mixture to form esters of perfluorinated alkanoic acid, in separating the components to low boiling point and non-volatile, to pass the mixture through a first gas chromatography column with a packing whose liquid phase consists of a silicone oil substituted by a slightly polar phenyl, to be extracted a fraction rich in the desired component, passing the extracted fraction through a second gas chromatography column with a packing whose liquid phase consists of a silicone oil not substituted by a phenyl and extracting a fraction rich in the desired component, to hydrolyze the extr fraction aite from the second stage and extract the desired product from the hydrolysis mixture. |
| priorityDate | 1981-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 102.