| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af737d167c026fd865fb68df681ea49a |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C205-44 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-45
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C1-12 |
| filingDate |
1992-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9bed0f289079e6f597675fcab6c758e0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb462d4922b0a91af9aafca14b4eae6c |
| publicationDate |
1994-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
SK-144693-A3 |
| titleOfInvention |
Process for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde |
| abstract |
Disclosed is a method for preparation of 3,4-dihydroxy-5-nitrobenzaldehyde by de-alkylating reaction of 4-hydroxy-3-methoxy-5-nitrobenzaldehyde, where 4-hydroxy-3-methoxy-5-nitrobenzaldehyde reacts in aprotic polar solvent under the temperature of 80 to 160 C with lithium salt of aromatic mercapto compound chosen from the set comprising thiophenol and 2-mercapto-benzothiazol. Reaction is preferably performed with using an aprotic polar solvent. It is preferably carried out in an inert atmosphere. |
| priorityDate |
1991-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |