http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1046639-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/B01J23-63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-323 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-63 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/B01J23-42 |
| filingDate | 2000-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6196555a688c4570f6fc27ecd5dbb3df http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f65cf2001f3fe184760fe47cc770b9fb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0f48af426365bd4097701fcac9b9d729 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f27ec0e7e599dad67521e251c476bef3 |
| publicationDate | 2000-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1046639-A1 |
| titleOfInvention | Process for the preparation of pyrroles |
| abstract | c) Palladium auf einem Oxid einer Seltenen Erde oder einem Oxid einesnElements der 4. Gruppe (IV. Nebengruppe) des Periodensystems oder d) eines Platin/Palladium-Gemischs auf Aluminiumoxid, einem Oxidneiner Seltenen Erde oder einem Oxid eines Elements der 4. Gruppe. nund 0 bis 70 Gew.-% Alkali- oder Erdalkalimetalloxid.There is a process for the preparation of pyrroles of general formula I. wherein R 1 , R 2 , R 3 and R 4 are identical or different and denote hydrogen atoms, alkyl groups with 1 to 12 carbon atoms or cycloalkyl groups with 3 to 12 carbon atoms, by dehydrating pyrrolidines of the general formula II wherein R 1 , R 2 , R 3 and R 4 have the meanings given above, in the presence of a supported noble metal catalyst. The dehydrogenation is carried out at temperatures in the range from 150 to 300 ° C. and pressures from 0.01 to 50 bar and the noble metal catalyst contains 30 to 100% by weight. c) palladium on an oxide of a rare earth or an oxide of an element of the 4th group (IV. subgroup) of the periodic table or d) a platinum / palladium mixture on aluminum oxide, a rare earth oxide or an oxide of an element of the 4th group. and 0 to 70% by weight of alkali or alkaline earth metal oxide. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1291081-A1 |
| priorityDate | 1999-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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