http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111138311-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-22 |
| filingDate | 2019-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111138311-B |
| titleOfInvention | Production method of m-aminoacetanilide |
| abstract | The invention discloses a method for producing m-amino acetanilide, which comprises the following steps: the method comprises the following steps: adding m-aminoacetanilide hydrochloride and mother liquor in proportion into a reaction kettle, heating to a temperature of 30-100 ℃, and then neutralizing by using a sodium hydroxide solution to a reaction end point, wherein the pH value of the reaction end point is 7-10; step two: carrying out liquid-liquid sedimentation layering within the temperature range of 40-100 ℃; obtaining a lower product and an upper product; step three: separating salt and mother liquor in the lower-layer product, filtering to remove salt while the product is hot, and using the mother liquor for the next batch; step four: transferring the oil phase in the upper layer product into a distillation still, and vacuum distilling and dehydrating to obtain a finished product with qualified water content, wherein the finished product can be directly used for synthesizing the m-acetamido-N, N-dimethoxy carbonyl methylaniline. The method has the advantages of simple process flow, simple operation and control, low wastewater production, high total yield and greatly shortened product dehydration and drying time. |
| priorityDate | 2019-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.