| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_82f30910f226a38bd83da6e571d3c67b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C47-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D237-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D237-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-24 |
| filingDate |
1977-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_648d0aa6436a333bf2f32c396df04b62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81583642313ac02fbfc724b345d7d426 |
| publicationDate |
1978-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-2706701-A1 |
| titleOfInvention |
PROCESS FOR THE PREPARATION OF 3-CHLORO-5-HALOGENPYRIDAZINES |
| abstract |
Prepn. of 3-chloro-5-halopyridazines of formula (I):- (where R1 is H, opt. branched 1-5C alkyl or phenyl opt. monosubstd. with Me, Cl, Br or NO2; and R2 is Cl or Br) comprises reacting a cpd. of formula (II):- R1-CO-CR2=CH-CCl3 (II) with semicarbazide or its salt. (I) are intermediates for pharmaceuticals and plant protecting agents. The reaction is simple and (I) is obtd. in high yields. Reaction is at 10-80 (pref. 20-60) degrees C and pH 1-5, pref. in DMF and/or DMSO contg. up to 50 wt. %. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102838548-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102838548-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0483027-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0483027-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0022321-A1 |
| priorityDate |
1977-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |