http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1043321-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a452aeb7f766d55db6921d784361b891 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H15-203 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D309-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D309-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D309-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D309-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H15-203 |
| filingDate | 2000-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dcd97f09e2761b1f7c076adc4fb5e58a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d33723365fb70334c9a7aed578637534 |
| publicationDate | 2000-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1043321-A1 |
| titleOfInvention | Process for the preparation of tetrahydropyran derivatives |
| abstract | A process for the preparation of a tetrahydropyran derivative of formula (II) <CHEM> wherein Z<1>, Z<2>, Z<3>, Z<4> and Z<5> have respectively the same meaning as defined below for R<1>, R<2>, R<3>, R<4> and R<5>, provided that a C1-C4 alkylcarbonyloxy group in formula (I) is converted into a hydroxyl group, and a C1-C4 alkylcarbonyloxy C1-C4 alkyl group is converted into a hydroxyl C1-C4 alkyl group, which comprises solvolyzing in an organic solvent a compound of formula (I) <CHEM> wherein R<1>, R<2>, R<3> and R<4> may be the same or different, and each represents a hydrogen atom, a hydroxyl group, a C1-C4 alkoxy group, a C1-C4 alkylcarbonyloxy group or an aryl C1-C4 alkyloxy group, and R<5> represents a hydrogen atom, a C1-C4 alkyl group, a hydroxy C1-C4 alkyl group or a C1-C4 alkylcarbonyloxy C1-C4 alkyl group, provided that at least one of R<1>, R<2>, R<3> and R<4> is a C1-C4 alkylcarbonyloxy group, in the presence of a base, followed by neutralizing with an acid and crystallizing. The process does not require special purification means such as an ion exchange. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104098621-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110698523-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110698523-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104098621-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104098620-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104098620-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105407863-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105968149-A |
| priorityDate | 1999-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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