http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6127950-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C215-76 |
| filingDate | 1984-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e9aca7f99ae0884cfdc60502fe47d41c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7906c5b467813b753313ac2d00615e53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5bfab2085486dc6c314b31cd23e366b9 |
| publicationDate | 1986-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6127950-A |
| titleOfInvention | Preparation of 2-amino-4-chlorophenol |
| abstract | PURPOSE: To obtain the titled compound useful as an intermediate for dye or drugs in high yield, by hydrolyzing 2,5-dichloronitrobenzene in a prescribed alkali concentration range to give 2-nitro-4-chlorophenolate, reducing, and neutralizing it. n CONSTITUTION: Hydrolysis of 2,5-dichloronitrobenzene is started at 3.5W6% alkali concentration (weight ratio to water), and the alkali concentration in the middle of the reaction is limited to 1W6% and the compound is hydrolyzed to give 2-nitro-4-chlorophenolate, which is reduced, and nutralized to give the aimed 2-amino-4-chlorophenolate. As for the hydrolyzing conditions, by-products are increased and yield is lowered when the alkali concentration exceeds 6%, the reaction is slightly started when the alkali concentration at the beginning of the reaction is lower than 3.5%, and the reaction rate is extremely low and the hydrolysis is not practical when the alkali concentration in the middle of the reaction is ≤1%. n COPYRIGHT: (C)1986,JPO&Japio |
| priorityDate | 1984-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.