http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5742678-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d3de607e369a55daf2120ea4267a4827 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D263-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D263-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D263-58 |
| filingDate | 1980-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_67bb5a9cf93febb550209a04d51e09bf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dfb97dad7415e4bd92976f686a77819c |
| publicationDate | 1982-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5742678-A |
| titleOfInvention | Preparation of 2-oxazolidinone compound |
| abstract | PURPOSE: To prepare the titled substance, useful as an intermedite of polymeric material, pharmaceuticals, etc., by reacting an aminoalcohol with CO 2 in a solvent, in the presence of a carbodiimide and pref. a tert-amine, under relatively mild conditions. n CONSTITUTION: An aminoalcohol of formula I (R 1 WR 4 are H, alkyl or aryl, or two of them together form an alkylene group; R 5 is H or alkyl) is made to react with CO 2 in an aprotic solvent (e.g. acetonitrile) in the presence of a carbodiimide (e.g. dicyclohexyl carbodiimide) as a condensing agent, under the CO 2 pressure of several W 20kg/cm 2 at 50W150°C to afford the objective compound of formula II. Presence of a tert-amine such as triethylamine in the reaction system shortens the reaction time and improves the yield. The amount of the carbodiimide is nearly equi-molar to the raw material; however, it may be used in excess if necessary. n COPYRIGHT: (C)1982,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013199456-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62263169-A |
| priorityDate | 1980-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.