http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IL-139178-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d669af06cb2abbcd6823699582a97002 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-72 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 |
| filingDate | 2000-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2004-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IL-139178-A |
| titleOfInvention | Process for preparing esterified chroman compounds |
| abstract | A process for preparing esterified chroman compounds, comprising (1.1) reacting ketoisophorone (KIP), present with technical garde purity, with an acylating agent in the presence of a proton acid to give a solution of trimethylhydroquinone ester (TMHQ ester) and (1.2) reacting said ester with an allyl alcohol derivative or an allyl alcohol in the presence of zinc halides and proton- producing acids, steps (1.1) and (1.2) optionally taking place in the presence of an organic solvent, (1.1.1) cooling the solution obtained in reaction step (1.1) to a temperature between 5 and 40!C, to crystallize out a product, (1.1.2) separating the product which crystallizes out and washing said product, (1.1.3) obtaining a filtrate by separation and optionally washing and using it as the solvent for the next mixture in accordance with reaction step (1.1), (1.2.1) using the optionally washed product in the reaction in accordance with (1.2) without being dried and (1.2.2) isolating the desired product, optionally after further acylation. |
| priorityDate | 1999-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 112.