http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5661371-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ae36dd74b117dc5564edfe18c4830991 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_20d3042eb4ea7c9afd525aa89373349d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-235 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D309-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 |
| filingDate | 1979-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d9fc1d7bbd2bfcd1eb4070fc4c46f37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb43d440d3e0a33d57584814713c82cf |
| publicationDate | 1981-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5661371-A |
| titleOfInvention | Preparation of substituted quinone derivative |
| abstract | PURPOSE: To obtain the titled substance which is an intermediate for a substituted benzoquinone, e.g. vitamin K, coenzyme Q, etc., by coupling a 2,3-substituted-5- methyl-1,4-hydroquinone derivative with a halide, and introducing a substituent group into the 4-position. n CONSTITUTION: A compound of formula I (X 1 and X 2 are lower alkyls, lower alkoxyls, or together form a group of formula II; R 1 and R 2 are groups capable of protecting hydroxyl groups) is reacted with a halide of the formula R-X [R is alkyl, allyl or aralkyl or group of formula III (A and B are Hs or and B represent direct bond; n is an integer 0W11); X is halogen] in a nonaqueous solvent in the presence of a strong base to give a compound of formula IV. DMF, THF, n-hexane, etc. may be cited as the preferred nonaqueous solvent. An organolithium compound or an alkali metal alcoholate may be cited as the strong base. n COPYRIGHT: (C)1981,JPO&Japio |
| priorityDate | 1979-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.