| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a12b0be1b74901f556d1d1a9200529ce |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-67
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C39-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-676 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-255
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-575
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-67
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-65
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-23
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C65-42 |
| filingDate |
1997-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b5cde7c288d42a47b2205d2b40146e7 |
| publicationDate |
2000-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20000053360-A |
| titleOfInvention |
Method for preparing a 4-hydroxybenzaldehyde and derivatives |
| abstract |
The present invention relates to a process for the preparation of 4-hydroxybenzaldehyde and its derivatives.n n n More specifically, the present invention relates to the preparation of 3-methoxy-4-hydroxybenzaldehyde and 3-ethoxy-4-hydroxybenzaldehyde, known as "vanillin" and "ethylvanillin", respectively.n n n The process for producing 4-hydroxybenzaldehyde and its derivatives is at leastn n n Phenolic compounds (A) having formyl and / or hydroxymethyl groups in the 2- and 4-positions;n n n A phenol compound (B) having a formyl or hydroxymethyl group at the 4-position; Andn n n Phenolic compounds having a formyl or hydroxymethyl group in the 2-position (C)n n n 3-carboxy-4-hydroxybenzaldehyde, 4-hydroxybenzaldehyde and 2-hydroxybenzoic acid, by selectively oxidizing the group in the 2-position to the hydroxyl group in the phenolic compound in the mixture comprising This is characterized by obtaining a mixture containing (produces 4-hydroxybenzaldehyde and phenol which can optionally be recycled via a decarboxylation process). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100892233-B1 |
| priorityDate |
1996-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |