http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4927946-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b502fde933db1d6126d10bbcbddb83ea |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-06 |
| filingDate | 1989-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c818e6664d914b0953f8d1bf5769ca2d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_449a5ff5a26bebc4a1c47d4724204c1c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a58876336311e0d4ca5712ba99009be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa852d4b46b787c6bf0f52b168dee600 |
| publicationDate | 1990-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4927946-A |
| titleOfInvention | Process for the preparation of 5-bromo-5-nitro-1,3-dioxane |
| abstract | Unpurified 2-bromo-2-nitro-1,3-propanediol is used as the starting material for a process for the preparation of 5-bromo-5-nitro-1,3-dioxane from 2-nitro-1,3-propanediol without the use of an organic solvent on an industrial scale. This is carried out in such a way that in a first stage a mixture of bromine and aqueous hydrogen bromide solution is cooled and an aqueous solution of an alkali metal or an alkaline-earth metal salt of 2-nitro-1,3-propanediol is added at such a rate that, with cooling, the maximum reaction temperature does not exceed 30° C., and then in a second reaction stage paraformaldehyde and sulfuric acid are added, left to react above room temperature, and the organic phase separated. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003040540-A1 |
| priorityDate | 1988-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.