http://rdf.ncbi.nlm.nih.gov/pubchem/patent/BR-112017013246-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c85d78c6a4459b5dbbc49c82a4c5c107 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-89 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89 |
| filingDate | 2015-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d79a37c6638a7c458ecd9e418a7d969 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b5aa5c9963decdc2daa348ff3ef9482c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_feba7144c0ee0434f00ed0a8d215434f |
| publicationDate | 2021-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | BR-112017013246-B1 |
| titleOfInvention | PROCESS TO PRODUCE 4-AZIDOSULPHONYLPHALIC ANHYDRIDE |
| abstract | The present disclosure provides a process for producing 4-azidosulfonylphthalic anhydride. In one embodiment, a process is provided and includes the chlorination of the trisodium salt of 4-sulfophthalic acid (1) under solvent reaction conditions to form a dissolved 4-chlorosulfonylphthalic anhydride (2) and an insoluble sodium chloride. The process includes first removing insoluble sodium chloride from the dissolved 4-chlorosulfonylphthalic anhydride to form an isolated 4-chlorosulfonylphthalic anhydride. The process includes reacting, under solvent reaction conditions, the isolated 4-chlorosulfonylphthalic anhydride with sodium azide to form a dissolved 4-chlorosulfonylphthalic anhydride and an insoluble sodium chloride. The process includes the second removal of insoluble sodium chloride from the dissolved 4-azidosulfonylphthalic anhydride to form an isolated 4-azidosulfonylphthalic anhydride. The process includes recovering a solid 4-azidosulfonylphthalic anhydride (3) from the isolated 4-azidosulfonylphthalic anhydride. |
| priorityDate | 2014-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.