http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108484653-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F5-025 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F5-02 |
| filingDate | 2018-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108484653-B |
| titleOfInvention | Preparation method of thiophene borate |
| abstract | The invention relates to a preparation method of thiophene borate, which comprises the following steps: the preparation method comprises the steps of mixing 3-thiophenecarboxaldehyde, p-toluenesulfonic acid monohydrate, ethylene glycol and toluene, carrying out reflux dehydration reaction, and then sequentially carrying out extraction, drying, filtering, spin-drying and elution to obtain 2- (3-thienyl) -1, 3-dioxolane; the method comprises the following steps of (1) replacing 2- (3-thienyl) -1, 3-dioxolane with nitrogen, injecting anhydrous tetrahydrofuran, dropwise adding n-butyllithium and isopropoxyboronic acid pinacol ester for reaction, performing quenching reaction, extraction, drying, spin-drying, adding dichloromethane to completely dissolve the materials, and adding petroleum ether until no solid is separated out; and finally, after dichloromethane and residual petroleum ether are evaporated in a rotary mode, when 2-boric acid pinacol diester-3- (1, 3-dioxolane) thiophene solid begins to be separated out, freezing and performing suction filtration to obtain white solid 2-boric acid pinacol diester-3- (1, 3-dioxolane) thiophene. The method is simple, high in yield and easy for industrial production. |
| priorityDate | 2018-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.