http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4321843-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D295-023 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-267 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-323 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-323 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-267 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-023 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-02 |
| filingDate | 1993-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a60ea0ffd9566c0687d4669cc7177a8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_61cc42ec7a9e8a93e7e3e03d34a40493 |
| publicationDate | 1995-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4321843-A1 |
| titleOfInvention | Process for the preparation of nitrogen five-membered heterocycles |
| abstract | Nitrogen five-membered ring heterocycles of the formula I <IMAGE> in which R<1>, R<2>, R<3>, R<4>, R<5>, R<6>, R<7> and R<8> are hydrogen or R<1> is C1- to C10-alkyl, C1- to C10-hydroxyalkyl, C1- to C10-aminoalkyl, aryl, C7- to C10-aralkyl or C7- to C10-alkylaryl, R<5> and R<6> are C1- to C8-alkyl, R<2> and R<3> together are oxygen, with the proviso that R<8> is hydrogen, R<3> and R<4> and/or R<7> and R<8> or R<6> and R<7> together are a bond, are prepared by reacting vinyloxiranes of the formula II <IMAGE> in which R<5> and R<6> have the abovementioned meanings, with ammonia or primary amines of the formula III R<1> - NH2 in which R<1> has the abovementioned meanings, in the presence of a compound of an element of sub-group VIII or of sub-group I of the Periodic Table of the Elements, optionally with addition of a Lewis acid, at temperatures from 20 to 200 DEG C and pressures from 1 to 70 bar, and then cyclising in the presence of hydrogen and of a hydrogenation catalyst at temperatures from 150 to 350 DEG C and pressures from 0.1 to 300 bar. |
| priorityDate | 1993-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 66.