http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106008137-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C5-31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C1-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C13-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C5-31 |
| filingDate | 2016-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106008137-B |
| titleOfInvention | Preparation method of 6,6,12, 12-tetramethyl-6, 12-dihydroindeno [1,2-b ] fluorene |
| abstract | The invention discloses a 6,6,12, 12-tetramethyl-6, 12-dihydroindeno [1,2-b ]]A process for the preparation of fluorene. The method comprises the following steps: coupling reaction: carrying out coupling reaction on o-bromoacetophenone and 9, 9-dimethylfluorene-2-boric acid to generate a compound shown as a formula M-1; wittig reaction: carrying out addition wittig reaction on the compound shown as the formula M-1 and methyl triphenyl phosphonium bromide to generate a compound shown as a formula M-2; and (3) cyclization reaction: the compound shown as the formula M-2 is subjected to cyclization reaction in the presence of acid to be converted into 6,6,12, 12-tetramethyl-6, 12-dihydroindeno [1,2-b ] shown as the formula M]Fluorene. The preparation method has simple process and easy operation; the required raw materials are easy to obtain and the cost is low; the yield is up to 66-78%, and the method is suitable for large-scale production. |
| priorityDate | 2016-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 71.