http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62215567-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cff62ee19588f053fe1f229df4e6c756 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D211-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 |
| filingDate | 1986-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b73fe0c5d12671ab665f5d3c33efc43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_489de28ca332e562562b6dd33c5c31fa |
| publicationDate | 1987-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S62215567-A |
| titleOfInvention | Production of 2,2,6,6-tetramethyl-4-oxopiperidine |
| abstract | PURPOSE: To produce the titled substance in high yield with few problems such as waste water treatment, by reacting acetone with 2,2,4,4,6-pentamethyl-2,3,4,5- tetrahydropyrimidine in the presence of a carbonic acid ester. n CONSTITUTION: The titled substance is produced by reacting 1mol of 2,2,4,4,6- pentamethyl-2,3,4,5-tetrahydropyrimidine with 3W15mol of acetone in the presence of a carbonic acid ester compound of formula XCOOR (X is Cl or Br; R is 1W3C alkyl) as a catalyst at ≥30°C for 1W20hr. The amount of the catalyst is 0.05W10wt% of the compound of formula. The reaction may be carried out in the copresence of a cocatalyst selected from bromine, iodine, sodium bromide, ammonium chloride and activated carbon at an amount of 0.1W5wt% of the compound of formula. n USE: Raw material for photostabilizer of polymers and intermediate for pharmaceuticals. n COPYRIGHT: (C)1987,JPO&Japio |
| priorityDate | 1986-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.