http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105061232-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_010b890eed2637be9194bd5b5015ffb4 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C217-84 |
| filingDate | 2015-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4928284c424bfb7d3a48dabdd052d245 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2ea9d1dfb4256831b580a03a0efe250 |
| publicationDate | 2015-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105061232-A |
| titleOfInvention | A kind of preparation method of red base B |
| abstract | <b>The present invention relates to a preparation method of red base</b><b>B</b><b>. In the presence of an acylation reaction solvent, anthranil and formic acid are mixed in</b ><b>80~102</b><b>The formylation reaction is carried out at ℃, and after the reaction is completed, it is filtered to obtain o-formamide anisole; When the temperature of the reaction system is </b><b>0~70</b><b>℃, nitric acid is added to the reaction system for nitration reaction, and after the reaction is completed, it is filtered to obtain</b>< b>2-</b><b>methoxy</b><b>-4-</b><b>nitroformanilide; will</b><b>2-</b ><b>Methoxy</b><b>-4-</b><b>nitroformanilide in the presence of sulfuric acid and water, at </b><b>80~120</b><b>80~120</b><b> b><b>The hydrolysis reaction is carried out at ℃, after the reaction is completed, separate and adjust the pH with soda ash</b><b>pH</b><b> to</b><b>6~7</b ><b>, and then filter to get the red base</b><b>B</b><b>. The product of the present invention has high yield, low cost, good quality and few by-products, which greatly reduces the waste water produced in the production process of red base</b><b>B</b><b> and meets the requirements of clean production. The operation is simple and convenient for industrialization. </b> |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109776337-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113185417-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113121360-A |
| priorityDate | 2015-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.