http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-317347-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_60def0e9458a372bf14aa5cb6da4d017 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6f7fce5e0565aa9f98ae0688dbced816 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-28 |
| filingDate | 1928-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1929-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-317347-A |
| titleOfInvention | Improvements in and relating to the production of 3-alkoxy-4-hydroxy benzaldehydes and derivatives thereof |
| abstract | 317,347. Graesser-Monsanto Chemical Works, Ltd., and Hudson, D. P. May 12, 1928. Right to Patent relinquished. Mono- and di-methyl and -ethyl ethers of protocatechnic aldehyde.-3: 4.Dimethoxy- or 3: 4- diethoxy-1-propenylbenzene is partially dealkylated, and the resulting mixture, of 4-hydroxy-3- alkoxy and 4-alkoxy-3-hydroxy-1-propenylbenzenes is oxidized by means of nitrobenzene or a nitrotoluene in the presence of alkali, the resulting 3-alkoxy-4-hydroxybenzaldehyde being separated from the unchanged 4-alkoxy-3-hydroxy-1- propenylbenzene. Huon pine oil (eugenol. methylether) may be used as the starting material, isomerization of the propenyl group taking place during the dealkylation, or isochavibetol, which may be the unchanged byproduct, may be methylated or ethylated and used. The dealkylation may be effected by heating with alcoholic potash, with or without pressure. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1767514-A1 |
| priorityDate | 1928-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.