http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6878843-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ddadb999be4f451dfc44d8e359d8f6a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-03 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-732 |
| filingDate | 2001-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2005-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_55dc38896742d5e1f44d07282dfd03bb |
| publicationDate | 2005-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6878843-B2 |
| titleOfInvention | Method for preparing hydroxyphenyl carboxylic acid esters |
| abstract | A process for the preparation of a compound of formula (I) n n nwhereinn R 1 and R 2 are each independently of the other C 1 -C 8 alkyl, cyclopentyl or cyclohexyl, m is 1, 2 or 3, preferably 2, n is an integer from 1 to 30, and R 3 is an n-valent radical from linear or branched C 4 -C 30 alkyl, which is optionally interrupted by one or more oxygen atoms, or (when n=1-12) an n-valent radical from C 5 -C 12 cycloalkyl, or a radical R 4 —[NR 5 —C m H 2m —] p , R 4 is hydrogen, an n-valent radical from linear or branched C 4 -C 30 alkyl, which is optionally interrupted by one or more —NR 5 — groups, or (when n=1-12) an n-valent radical from C 5 -C 12 cycloalkyl, R 5 radicals, each independently of any other(s), are hydrogen or methyl or —C m H 2m —, preferably hydrogen, and p corresponds to the number of —[NR 5 —C m H 2m —] groups that gives n —C m H 2m — radicals per molecule,n nby reaction of a compound of formula (II) n n nwherein R is C 1 -C 3 alkyl,n nwith a compound of formula (III)n nR 3 (OH) n (III)n nwherein R 3 and n have the definitions given, wherein the reaction takes place at a practically neutral acid value (pH) and in the presence of at least one alkali metal salt of an organic carboxylic acid, which salt is dissolved or suspended in the reaction mixture, or in the presence of a mixture of such alkali metal salts, (i) that alkali metal salt being formed from an alkali metal cation and an anion of an organic carboxylic acid and (ii) the organic carboxylic acid being at least partially volatile under the reaction conditions applied. Preferred alkali metal salts are alkali metal formate and alkali metal acetate. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005228062-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007208189-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7601862-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7588880-B2 |
| priorityDate | 2000-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 253.