http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109810129-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D273-08 |
| filingDate | 2019-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109810129-B |
| titleOfInvention | Annular photosensitive chiral molecule of binaphthylazobenzene and preparation method and application thereof |
| abstract | The invention discloses a photosensitive cyclic chiral molecule of binaphthyl azobenzene, a preparation method and application thereof, wherein the preparation method comprises the following steps: dissolving 6,6 '-dibromo-1, 1' -bi-2-naphthol, potassium carbonate, potassium iodide and 2- (2-chloroethoxy) ethanol in N, N-dimethylformamide to obtain an intermediate 1, dissolving the intermediate 1 and 4-pentoxy biphenyl boric acid in 1, 4-dioxane, reacting with potassium carbonate aqueous solution and tetratriphenylphosphine palladium to obtain an intermediate 2, dissolving the intermediate 2 by dichloromethane, and adding triethylamine, 4-dimethylaminopyridine and p-toluenesulfonyl chloride to react to obtain an intermediate 3; and adding cesium carbonate into the mixture and 2,2' -dihydroxy azobenzene and dibenzo-18-crown ether-6 to react in a nitrogen atmosphere to obtain a target product T. The binaphthyl azobenzene photosensitive cyclic chiral molecule is easy to synthesize, has good stability, can realize the regulation and control of the cholesteric liquid crystal pitch through photoinduced cis-trans isomerism, and has good compatibility with liquid crystal molecules. |
| priorityDate | 2019-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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