http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62240674-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8fb9f44db08d1c42a53f3d28eaae416f |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-02 |
| filingDate | 1986-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94dc7e1e78c725765f74ae50ebbca335 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a30cc0eef7c5df46e3ac5d9571938c13 |
| publicationDate | 1987-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S62240674-A |
| titleOfInvention | Purification of 1,4-diazabicyclo(2,2,2)octane |
| abstract | PURPOSE: Crude 1,4-diazabicyclo[2,2,2]octane containing ethylene glycol is treated with an inexpensive isocyanate and distilled to effect purification whereby the titled compound of high purity is readily obtained. n CONSTITUTION: A crude 1,4-diazabicyclo[2,2,2]octane containing at least ethylene glycol which is obtained by cyclization of N,N-bis(2-hydroxyethyl)piperazine is treated with an isocyanate to polymerize impurities and distilled to effect purification. Thus, the objective compound of high purity of 96W98% is obtained. Tolylene diisocyanate or hexamethylene diisocyanate is preferably used as the isocyanate. n EFFECT: The purification can be done without use of a large amount of solvents with simple installation and operations. n USE: Urethane catalyst and others. n COPYRIGHT: (C)1987,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102584833-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6627756-B1 |
| priorityDate | 1986-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.