http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2215604-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f9ba304908c7187b486482f16a0f6158 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-22 |
| filingDate | 1996-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2006-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2954ba262eb9ae16fb659dceb008f422 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3eaa4902483289468ed8b056fe955aa1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a6369f9f0175d0a5d789532dedd0f783 |
| publicationDate | 2006-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2215604-C |
| titleOfInvention | Process for preparation of 1,4-benzodioxane derivative |
| abstract | The present invention is directed to a novel process for preparing a 1,4-benzodioxane derivative of the formula (1) <IMG> wherein, R1 is H, RSO2 in which R is alkyl, phenyl which may be substituted with alkyl, R2, R3, R4 are H, halogen, OH, nitro, cyano, formyl, COOH, alkoxycarbonyloxy, alkyl, alkoxy, haloalkyl, N,N-dialkylamino, alkylcarbonyl, alkoxycarbonyl, phenyl which may be substituted. The 1,4-benzodioxane derivative is a useful intermediate in the preparation of circulatory drugs and drugs for psychoneurosis. The process comprises sulfonating a phenoxypropanediol with a sulfonyl halide, eliminating the protective group, and then cyclizing the sulfonated compound by treating with a base followed by, if necessary, further sulfonation. |
| priorityDate | 1995-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 102.