| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_00c9314159fffd8d749d23c813691f5c |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-138
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D405-04 |
| filingDate |
2007-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e63d159cdba1cd3f311d170797b7fbad
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_380fa738e3b74a049ad7fc273bc7d11d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4947f7ef981cc3cdb22ff77a365d6b4c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_624c1e70859fb744f0938fceae417ca5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_842bad08cb567923c718eca8ad9fe3f1 |
| publicationDate |
2008-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2008163026-A |
| titleOfInvention |
8-Nitro-2- (1H-tetrazol-5-yl) -4H-1-benzopyran-4-one is prepared from 8-nitro-2-cyano-4H-1-benzopyran-4-one and converted to 8 Improved method for conversion to amino-2- (1H-tetrazol-5-yl) -4H-1-benzopyran-4-one hydrochloride |
| abstract |
The present invention relates to 8-nitro-2- (1H-tetrazole-5) from 8-nitro-2-cyano-4H-1-benzopyran-4-one using sodium azide together with zinc halide in water. -Yl) relates to an improved process for the conversion to 4H-1-benzopyran-4-one. 8-Nitro-2- (1H-tetrazol-5-yl) -4H-1-benzopyran-4-one is obtained by using stannous chloride in an aqueous hydrochloric acid solution. Further conversion to-(1H-tetrazol-5-yl) -4H-1-benzopyran-4-one hydrochloride. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103980257-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023010762-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106854202-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106854202-B |
| priorityDate |
2006-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |