http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S54125684-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D215-18 |
| filingDate | 1978-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_47e04185f8a193940b7b6f6875cbb172 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a706df16fc8513b40381988f6fe2487f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_098bdf1a6464d6a745472cdbadeef4bb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba534b94599209e6f865ac002bfd5d20 |
| publicationDate | 1979-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S54125684-A |
| titleOfInvention | Purification of crude quinaldine derivative |
| abstract | NEW MATERIAL:8-Chloro-4-ethyl-5-nitro-quinaldine (NCEQ) and 5-amino-8- chloro-4-ethyl-quinaldine (ACEQ) of formula (R is nitro, amino). n USE: Intermediate of red-colored pigment. Since the pigments derived from the above compounds have different color tones, they are used separately. n PROCESS: A mixture obtained by the aldol condensation of methyl ethyl ketone with acetaldehyde is subjected to the Doebner-Miller condensation with o-chloroaniline, and the 5-position of the resulting compound is nitrified to afford NCEQ and NCDQ (8-chloro-3,4-dimethyl-5-nitro-quinaldine), which is reduced to ACEQ and ACDQ. NCEQ is recrystallized with 1W5C aliphatic alcohol, or 6W8C alicyclic hydrocarbon, and ACEQ is recrystallized with 1W5C aliphatic alcohol or 6W12C aromatic hydrocarbon. The objective compounds are prepared in high yield and purity, by this purification process. n COPYRIGHT: (C)1979,JPO&Japio |
| priorityDate | 1978-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.