http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S63295567-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cac023d2e2874224ecbbcccbdea1fc91 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D265-36 |
| filingDate | 1987-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_77280170ebfbdf8d707b62beb09e9bdc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9cc5c198a554d208760dfc6c72bfb6c7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b40a7fa5c4331e272ace830bd007b6f |
| publicationDate | 1988-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S63295567-A |
| titleOfInvention | Process for production of 3,4-dihydro-2h-1,4-benzoxazine with industrial advantage |
| abstract | PURPOSE: To obtain the title compound which is used as a starting substance of agrochemicals and medicines by reducing a readily available 2H-1,4- benzoxazine-3(4H)-one derivative with sodium acyloxyborohydride. n CONSTITUTION: The reduction of 2H-1,4-benzoxazine-3(4H)-one derivative of formula I (R 1 WR 3 are H, halogen, lower alkyl, lower alkoxy) with sodium acyloxyborohydride gives 3,4-dihydro-2H-1,4-benzoxazine such as 7-chloro-2H-1,4- benzoxazine-3(4H)-one. The compound of formula I is obtained by N- chloracetylation of an o-aminophenol derivative of formula III with chloracetyl chloride in the presence of a bicarbonate salt in dioxane followed by hydrogenation and thermal cyclization. The process of the present invention enables low- cost production of the title compound in high yield with high safety. n COPYRIGHT: (C)1988,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0913395-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100455573-C |
| priorityDate | 1987-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.