http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111454190-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_77685d6f642b145f9626ff5a2ea05709 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be7a85183f8689e3afa6b34a3f835adb |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B39-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-273 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-273 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B39-14 |
| filingDate | 2020-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15aeb97ad7c9dec64238d4dbeb9537ec http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fd0b483a3638bfc9cf95d31774686505 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1fcaafa213a84e363f7547bb7bb65845 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7cedc3f69e89a5f27a47d998fbfad0bb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c10dc8dcf3cb27950d2b395f50714b22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5946f99ee512f3d0d5470a8f4ef15249 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23f47c30a482fa470aad14d368ce24d0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6690f4ea769e3a9b1bbebac0974512ac |
| publicationDate | 2020-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111454190-A |
| titleOfInvention | A kind of method that adopts NaA type molecular membrane reactor to synthesize oxiracetam |
| abstract | The invention discloses a method for synthesizing oxiracetam by adopting a NaA type molecular sieve membrane reactor. The method adopts the prepared NaA molecular sieve membrane to prepare oxiracetam by coupling the steam permeation technology with the cyclization reaction, including adding absolute ethanol into the reaction flask, adding glycine hydrochloride and sodium bicarbonate in a state of stirring, and heating up. to reflux; start to add 4-chloro-3-hydroxybutyrate dropwise to the reaction solution, continue to reflux and stir, until the reflux is stable, place the step NaA type molecular sieve membrane reactor above the reaction solution, couple with the cyclization reaction device and connect it to the reaction solution. The vacuum was turned on to carry out the reaction, and the reaction product was obtained after the reaction was completed. The method of the invention reduces the energy consumption required for the cyclization reaction and the requirements for the reaction equipment, improves the yield of the product and the purity in the separation process, realizes the reuse of ethanol and saves the production cost. |
| priorityDate | 2020-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.