http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105254611-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D333-70 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D333-70 |
| filingDate | 2015-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105254611-B |
| titleOfInvention | The preparation method of the carboxylic acid of benzothiophene 2 |
| abstract | The invention discloses a kind of preparation method of the carboxylic acid of benzothiophene 2, in high-pressure bottle, using 3 sulfydryl cumarins as raw material, reacted using TBAB as catalyst in alkali lye；First the pressure in regulation high-pressure bottle is 0.8~1.2Mpa, is then heated to 130~160 DEG C of 7~10h of reaction；Catalyst is 2~12.5mol% of raw material, and alkali is 1.5~3.6 moles times of raw material；Reaction end is cooled to addition concentrated hydrochloric acid after room temperature and is acidified to reaction product pH=3~4, and filtration drying obtains the carboxylic acid of benzothiophene 2. |
| priorityDate | 2015-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.