http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9951561-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_55ffc80dc476f4735105012855adf226 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3c7a0d13ccdd6c80ee6f5825470b5fa7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8ae929383384fe73cc6e06c85c222ea0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-01 |
| filingDate | 1999-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7088dba1d57e531477645513fb045f2e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de1809f20aeb79b109191f762b73fc73 |
| publicationDate | 1999-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-9951561-A1 |
| titleOfInvention | New processes for the preparation of 3-bromoanisole and 3-bromonitrobenzene |
| abstract | Process for the preparation of 3-bromoanisole comprising methoxydenitrating 3-bromonitrobenzene in the presence of a phase-transfer catalyst (PTC), and the preparation of 3-bromonitrobenzene by the bromination of nitrobenzene with bromine in oleum. The methoxydenitration reagent is an alkali metal methoxide, which is selected from sodium methoxide and potassium methoxide. The amount of methoxide used is 1-1.5 mol per mol of 3-bromonitrobenzene. The alkali methoxide can be a pre-prepared solid or it can be prepared in situ, by the reaction of the corresponding alkali hydroxide and methanol. In the case when pre-prepared solid methoxide is used, the effective amount of alkali hydroxide is between 1.2-1.7 mol per mol of 3-bromonitrobenzene. The reaction temperatures are between about 40 to 80 °C, with preference to reaction temperatures of 50 to 55 °C. In the case in which methoxide is prepared in situ, the effective amount of alkali hydroxide is between 2.2-2.4 mol per mol of 3-bromonitrobenzene. The reaction temperatures are between about 50 to 80 °C with preference to reaction temperatures of 55 to 65 °C. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10343127-B2 |
| priorityDate | 1998-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 138.