http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105037306-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_122a4068b11ea88a8cf93b46c6fd8644 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-88 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-88 |
| filingDate | 2015-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d06f9de70c0f10344814cfea4b34d5f8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_065ae2922d4b932fbc3418ef4bf61405 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_614c13f84d482a6f5982b09e466ab7be |
| publicationDate | 2015-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105037306-A |
| titleOfInvention | A kind of synthetic method of methylnaphtholphthalein |
| abstract | The invention provides a synthetic method of methylnaphtholphthalein, which comprises the following steps: (1) using phthalic anhydride and 1-naphthol as raw materials, Lewis acid as a dehydration catalyst, and polyphosphoric acid as a solvent to prepare Naphtholphthalein crude product; (2) obtain the pure product of methylnaphtholphthalein after the crude product of methylnaphtholphthalein that step (1) obtains is purified. The synthesis method of methylnaphtholphthalein has the characteristics of cheap and easy-to-obtain raw materials, simple process, easy purification, etc., is suitable for large-scale industrial production, and solves the current problems of small-scale reagent-grade production of methylnaphtholphthalein in a laboratory and is expensive. <pb pnum="1" /> |
| priorityDate | 2015-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.