http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2728976-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/C07D233-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-54 |
| filingDate | 1977-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3d47e4f1d041fc3b3faa1bce476b4952 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a8a7dccc4480d8e4ae6318a3ff48c30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_160d7cd7714eddad90866f227f5d088d |
| publicationDate | 1979-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2728976-A1 |
| titleOfInvention | PROCESS FOR THE PREPARATION OF IMIDAZOLES |
| abstract | Prodn. of imidazoles of formula (I) comprises (a) reacting 1,2-diamines of formula (II) with carboxylic acids of formula (III) or (b) dehydrogenating 2-imidazolines of formula (IV), in either case by heating at 300-600 degrees C in the presence of zinc oxide or a mixt. of zinc oxide and aluminium oxide as catalyst: (R1 - R4 = H or an aliphatic, araliphatic, cycloaliphatic or aromatic residue). (I) are intermediates for dyes, plant protection agents, textile aids, polyurethane and epoxy resin catalysts, surfactants and pharmaceuticals (e.g. nitroimidazoles). They can also be used as catalysts for polymerisations and aldol condensations. (I) is obtd. in good yields and purity. The catalysts used are cheap and easily regenerated, and are not significantly poisoned after prolonged use. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0025191-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4340744-A |
| priorityDate | 1977-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 157.