http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114149444-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 |
| filingDate | 2021-11-03^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-11-15^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-11-15^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114149444-B |
| titleOfInvention | The synthetic method of 2,3,6,7-anthracene tetracarboxylic dianhydride |
| abstract | The invention discloses a synthesis method of 2,3,6,7-anthracene tetracarboxylic dianhydride, which comprises the following steps: ①Using 1,2,4,5-tetrakis(dibromomethyl)benzene as a starting material , first carry out Diels-Alder reaction with butynedicarboxylate to obtain 2,3,6,7-anthracene tetracarboxylic acid tetraester; 2,3,6,7-anthracene tetracarboxylic acid obtained in step ① Hydrolysis of acid tetraesters to obtain 2,3,6,7-anthracene tetracarboxylic acid; ③The 2,3,6,7-anthracene tetracarboxylic acid obtained in step ② is dehydrated into an anhydride to obtain 2,3,6,7-anthracene tetracarboxylic acid Tetracarboxylic dianhydride. The synthetic route of the present invention adopts butynedicarboxylate as a dienophile, and the obtained intermediate 2,3,6,7-anthracene tetracarboxylic acid tetraester is compared with the N,N'-diphenyl The base-2,3,6,7-anthracene diimide has moderate solubility and polarity, which is conducive to the control of the reaction and separation and purification, and is suitable for large-scale industrial production, and the reaction yield is relatively high, which can reach about 50%. |
| priorityDate | 2021-11-03^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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