http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2460783-A1
Outgoing Links
Predicate | Object |
---|---|
assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D339-04 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D339-04 |
filingDate | 1974-12-21^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_63d6e41574b6b03f3da8551cf919c301 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f0c4631f4f6ed858d28bcac2f83a348f |
publicationDate | 1976-07-01^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | DE-2460783-A1 |
titleOfInvention | PROCESS FOR PRODUCING 5-NITRO-BENZ-1,2-DITHIOL-3-THIONE |
abstract | 5-Nitrobenzo-1,2-dithiole-3-thione of formula (I) is prepd. by reacting a 2-halo-5-nitrobenzyl halide of formula (II) with sulphur in the presence of a base at 20-100 degrees C, as follows: (where each X is independently halogen). (I) has fungicidal activity and is useful as an intermediate for plant-protection agents, pharmaceuticals and dyes. The process is simple and gives high yields (e.g. 70-90%). The starting material is pref. 2-chloro-5-nitrobenzyl chloride (IIa), which can be prepd. by nitrating 2-chlorobenzyl chloride. The base is pref. a tert. amine or an alkali metal alcoholate. The reaction is pref. effected in an inert solvent, esp. an alcohol or ether. |
priorityDate | 1974-12-21^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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