| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D211-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-3435 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D211-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D211-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-3435
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D221-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B63-04 |
| filingDate |
1996-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1997-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d257e55590e3da2eab8b0040b890897a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32959b721bbb74ef18c76d4375b10815
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b221c257d0c1b26fcdee67b27658e7f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e4e33822108751bd91f5b9d7c9b2166
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12bad9084294a8f9ed37f603301ef42b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1dca366558f17f7bacafa453d3c8fe3 |
| publicationDate |
1997-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-19622268-C1 |
| titleOfInvention |
Sterically hindered 4-aminopiperidine with a low dimer content, its preparation and use |
| abstract |
A process for reducing the dimerisation of piperidines of formula (I), in which R<1>-R<4> = 1-6C alkyl, or R<1>/R<2> or R<3>/R<4> together may form a CH2 chain with 2-5 C atoms. The process comprises adding to (I) 0.001-0.2 wt% of a reducing agent of formula MXH4-mYm (III), in which M = alkali metal, NR4 (with R = 1-4C alkyl) or one equivalent of alkaline earth metal or zinc; X = boron or aluminium; Y = H or CN; m = 0 or 1. Also claimed is a mixture containing (A) a piperidine of formula (I), (B) 1-1000 ppm of a compound of formula (II) and (C) 0.001-0.2 wt% reducing agent (III). |
| priorityDate |
1996-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |