http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0412366-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-138 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D303-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-135 |
| filingDate | 1990-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1994-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e307c548a30d14b831911ade558f0165 |
| publicationDate | 1994-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0412366-B1 |
| titleOfInvention | Process for the preparation of 2,5-dihydrofurans |
| abstract | A process for the preparation of 2,5-dihydrofurans of the general formula I <IMAGE> I where R1, R2, R3, R4, R5 and R6 are identical or different and are hydrogen or C1-C4-alkyl, by the catalytic rearrangement of 3,4-epoxy-1-butenes of the general formula II <IMAGE> II comprises the rearrangement being catalyzed by a system which contains components A, B and C, at from 60 DEG to 200 DEG C., where A is a halide of an alkali metal or alkaline earth metal or an onium halide, B is an organic solubilizer for component A, and C is a Lewis acid or elemental iodine, with the proviso that at least one of components A or C is an iodide. 2,5-Dihydrofurans are intermediates for the well known tetrahydrofurans which are used as solvents, e.g. for polyvinyl chloride, polyvinylidene chloride, and other difficultly soluble organic materials, and are also used as monomers for the preparation of polytetrahydrofurans. |
| priorityDate | 1989-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.