| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af99df08b153738cd418446a75d09bfc |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-87
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D309-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D309-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-87 |
| filingDate |
1981-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1982-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_17382261208950da6860c0dafd332da2 |
| publicationDate |
1982-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4336195-A |
| titleOfInvention |
Preparation of cyclic ethers |
| abstract |
Cyclic ethers such as tetrahydrofuran, dioxane, and tetrahydropyran are produced by reacting dimethyl carbonate with an appropriate primary dihalide in the presence of a quaternary ammonium or phosphonium salt. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4801358-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4487943-A |
| priorityDate |
1981-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |